In the space provided, write “true” if...

WORKBOOK LESSON: WHAT ARE ELEMENTS?.............................................................1

ELEMENTS...................................................................................................................1FILL IN THE BLANK................................................................................................2

WORKBOOK LESSON:.................................................... ELEMENTS AND THEIR SYMBOLS................................................................................................................................................3

FILL IN THE BLANK................................................................................................3MATCHING................................................................................................................3

WORKBOOK LESSON: WHAT ARE COMPOUNDS AND MOLECULES?........................4FILL IN THE BLANK................................................................................................4MATCHING................................................................................................................4TRUE AND FALSE....................................................................................................5REACHING OUT.......................................................................................................5

WORKBOOK LESSON: WHAT IS A CHEMICAL FORMULA?...........................................6FILL IN THE BLANK................................................................................................6MATCHING................................................................................................................6

WORKBOOK LESSON: WHAT IS A CHEMICAL EQUATION?..........................................8FILL IN THE BLANK................................................................................................9

WORKBOOK LESSON: WHAT IS THE DIFFERENCE BETWEEN A PHYSICAL CHANGE AND A CHEMICAL CHANGE?...........................................................................10

BURNING MAGNESIUM..........................................................................................11FILL IN THE BLANK..............................................................................................11

SHREDDING PAPER.................................................................................................12

MELTING ICE............................................................................................................13FILL IN THE BLANK..............................................................................................13

CHOPPING WOOD....................................................................................................14FILL IN THE BLANK..............................................................................................14TRUE AND FALSE..................................................................................................15

WORKBOOK LESSON: HOW CAN MIXTURES BE SEPARATED?...............................16FILL IN THE BLANK..............................................................................................17WORD SCRAMBLE................................................................................................17FILL IN THE BLANK..............................................................................................18TRUE AND FALSE..................................................................................................19

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WORKBOOK LESSON: WHAT ARE ACIDS?...................................................................22FILL IN THE BLANK..............................................................................................22TRUE AND FALSE..................................................................................................22

WORKBOOK LESSON: WHAT ARE BASES?..................................................................23FILL IN THE BLANK..............................................................................................23TRUE AND FALSE..................................................................................................23FILL IN THE BLANK..............................................................................................25FILL IN THE BLANK..............................................................................................26MATCHING..............................................................................................................26TRUE AND FALSE..................................................................................................27

WORKBOOK LESSON: WHAT IS ENERGY?...................................................................28FILL IN THE BLANK..............................................................................................28TRUE or FALSE.......................................................................................................28Answer the following questions................................................................................28

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WORKBOOK LESSON: What are Elements ? ELEMENTS

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(4 marks)This is a model of an atom.

Different elements have different atoms.

Sometimes the differences are very slight.

1. There are different kinds

of atoms.

2. Matter that has only one kind of

matter is called an

.

The atoms of any one element are almost exactly alike.

Each of the circles in the picture stands for one atom of an element iron.

If we could study just one of these atoms, it would still have the properties of iron.

The smallest part of an element is just one atom of that element.

3. Is it possible to study just one

atom?

4. Explain your answer.

.

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FILL IN THE BLANK (10 marks)Complete each statement using a term or terms from the list below. Write your answers in the spaces provided. Some words may be used more than once.

different one atom 109element 92 alike17 atoms solid

1. All matter is made up of tiny particles called .

2. There are different kinds of atoms.

3. Matter that is made up of only one kind of atom is called an .

4. There are different elements.

5. There are natural elements.

6. Scientists have made elements in the laboratory.

7. The atoms of any one element are almost exactly .

8. The smallest part of an element is of that element.

9. Atoms of different elements are always .

10. Most elements are found in the state.

TRUE AND FALSEIn the space provided, write “true” if the sentence is true, or put “false” is the sentence is false.(10 marks)

1. Every atom in the world is exactly alike.

2. There are only 109 different kinds of atoms known.

3. There 90 different elements.

4. An element has only one kind of atom.

5. Atoms of different elements a re alike.

6. Scientists have made 93 elements in the laboratory.

7. The symbols for elements are different in different countries.

8. An atom if iron is the same as an atom of oxygen.

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9. The smallest part of an element is one atom.

10. Scientists may make new elements in the future.

WORKBOOK LESSON: Elements and Their Symbols FILL IN THE BLANK Complete each statement using a term or terms from the list below. Write your answers in the spaces provided. Some words may be used more than once.(5 marks)

capital two symbolGreek lower case

1. The short way of writing an element is called its .

2. The first letter of a chemical symbol is always a

letter.

3. If a chemical symbol has two letters, the second letter is always in

.

4. A chemical symbol never has more than letters.

5. The symbols for many elements come from the Latin and

words for the element.

MATCHING Match each term in Column A with its description in Column B. Put your answer in the Column titled, Your Answer. You are to take the each letter beside an item in Column B and write it beside the item in Column A that it is describing. (5 marks)

Your Answer Column A Column B

symbol A never used as a chemical symboleach element B always a capital letter2nd letter of a chemical symbol C has its own chemical symbolthree letters D sign that stands for something else1st letter of a chemical symbol E always a lowercase letter.

REACHING OUT

Why is it so important to have only one set of chemical symbols in the world? (2 marks)

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WORKBOOK LESSON: What are Compounds and Molecules?FILL IN THE BLANK Complete each statement using a term or terms from the list below. Write your answers in the spaces provided. (12 marks)

one million millions metalmolecule compounds 109elements linked up non-metallose two

1. There are know elements.

2. The number of different known substances is more than .

3. Elements combine to form .

4. Elements of a compound their properties.

5. A compound has at least elements.

6. A compound must have at least one atom and one atom.

7. The smallest part of a compound is called a .

8. In a small amount of a compound, there may be of molecules.

9. A compound is made of atoms.

10. All matter is made up of or .


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Your Answer Column A Column B

atom A has one kind of atommolecule B short way of writing an elementsymbol C smallest part of an elementelements D two or more elements are linked togethercompound E smallest part of a compoundwater F saltcarbon dioxide G elements that make up saltsodium and chlorine H links with a non-metalmetal I compound made up of hydrogen and oxygensodium chloride J compound made up of carbon and oxygen

TRUE AND FALSE In the space provided, write “true” if the sentence is true, or put “false” is the sentence is false.(10 marks)

1. All mater is made of atoms

2. An element is matter

3. A compound is matter

4. All matter is made of elements and compounds.

5. Elements and compounds are made of atoms.

6. Compounds link up to make elements.

7. A compound can have only one element.

8. The smallest part of a compound is one atom of that compound.

9. A compound must have at least one metal atom and one non-metal atom.

10. There are more elements than compounds.

REACHING OUT

Why should you always follow instructions carefully when mixing chemicals?(2 marks)

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WORKBOOK LESSON: What is a Chemical Formula ? FILL IN THE BLANK

(11 marks)Complete the following sentences by writing the correct word or term in the space provided.

1. A molecule is made up of . (atoms, oxygen)

2. A single molecule has at least was atoms. (one, two)

3. (Elements, Compounds) are combined to

make

(elements, compounds).

4. There are elements than compounds. (more, fewer)

5. Molecules are usually than atoms. (larger,

smaller)

The formula for starch is C6H10O5 -- this stands for one molecule of starch. Answer the following questions about the starch molecule.

6. Starch is made up of elements from the sun. (one, two, three)

7. The number of different kinds of atoms in starch is . (three, billions)

8. One molecule of starch has atoms of hydrogen. (two,

six, ten)

9. The total number of atoms in one molecule of starch is . (6,

10, 16, 21)

10. The number of molecules in a teaspoon of starch is .

(about one hundred, more than a billion)

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Your Answer Column A Column BCaF2 A contains one kind of atomHF B 3 atoms in each moleculeFormula C 2 atoms in each moleculeElement D short way of writing an elementSymbol E short way of writing a compound

Complete the chart with the missing information. The first one has been done. (20 marks)

Formula NameNumber

of Elements

Names of the

Elements

Number of Atoms of Each Element

Total Number of Atoms

in One Molecule

MgO magnesium oxide

SO2 sulfur dioxide

NH3 ammonia

H2CO3

carbonic acid(soda water)

C12H22O11

table sugar

MgSO4epsom salts

NaOHsodium hydroxide (lye)

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H2O2hydrogen peroxide

Fe2O2 iron oxide (rust)

NaHCO3sodium bicarbonate (baking soda)

WORKBOOK LESSON: What is a Chemical Equation ? Table salt can be melted. If an electric current passes through melted sodium chloride, a chemical reaction takes place. This is the chemical equation for this reaction:(20 marks)

2NaCl → 2Na + Cl21. The reaction has one reactant. Name the reactant:

2. The reactant in its natural state is a

3. The reactant (is, is not) dangerous.

4. Name the products:

5. What is the state of sodium?

6. is Sodium dangerous?

7. Are the properties of sodium the same as the properties of sodium chloride?

8. What is the state of chlorine?

9. Is chlorine dangerous?

10. Are the properties of chlorine the same as the properties of sodium chloride?

11. In a chemical reaction, properties change. (do, do not)

12. Name the kinds of atoms on the reactant side of this equation.

13. Name the kinds of atoms on the product side.

14. The kinds of atoms on the reactant side the same as the atoms on the resultant side. (are, are not)

15. Are they in the same form?

16. The atoms in the reactant are part of

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(a compound, two elements)

17. The atoms in the product are part of

(a compound, two elements)

18. The arrangement of the atoms changed. (has, has not)

19. In this reaction, atoms have . (separated, linked up)

20. In a chemical reaction, the arrangement of the elements change.

(does, does not)

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FILL IN THE BLANK Complete each statement using a term or terms from the list below. Write your answers in the spaces provided. Some words may be used more than once. (12 marks)

products right physicalchemical equation take part yieldsnew chemical reactionarrow reactants left

1. A change in which no new products are formed is called a

change.

2. A change in which new products are formed is called a

change.

3. Another way of saying “chemical change” is “chemical

“ .

4. A set of symbols and formulas that describes a chemical reaction is called a

.

5. A chemical equation indicates which substances

in a chemical reaction. It also tells which

substances are formed.

6. The substances that take part in a chemical reaction are called the

.

7. The new substances that form in a chemical reaction are called the

.

8. In a chemical equation, the reactants are on the side. The

products are on the side.

9. In a chemical reaction, the reactants and the products are separated by an

.

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10. The arrow means “produces” or “

” .

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WORKBOOK LESSON: What is the Difference Between a Physical Change and a Chemical Change ?

(11 marks)1. What compound did we start with?

2. What two elements make up that compound

3. What two elements did we end up with?

4. Were new substances formed?

5. Are the properties of the old substance and new substance different?

6. How many atoms of hydrogen did we start with?

7. How many atoms of oxygen did we end up with?

8. How many atoms of hydrogen did we end up with?


10. Did the type and number of atoms change?

11. Does electrolysis cause a chemical change or physical change?

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BURNING MAGNESIUM FILL IN THE BLANK

1. What two elements did we start with?

2. What compound did we end up with?

3. What two elements make up that compound?

4. Were new substances formed?

5. Are the properties of the old substance and new substance different?

6. How many atoms of hydrogen did we start with?


8. How many atoms of hydrogen did we end up with?


10. Did the type and number of atoms change?

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(11 marks)

11. Does electrolysis cause a chemical change or physical change?

SHREDDING PAPER Shredding paper is an example of a physical change. In a physical change, the atoms do not change the way they linked up. No new products are formed. Look at Figure F and then answer the questions below. (6 marks)

1. Does the paper look different after being shredded?

2. Is the paper still paper?

3. Are the atoms taking in energy?

4. Are the atoms giving off energy? _____

5. In a physical change, the atoms (do, do not) change the way they link up.

6. The chemical properties of the paper (are, are not) changed

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MELTING ICE

FILL IN THE BLANK

Melting ice is an example of a change of state. A solid (ice) changes into a

liquid (water). The formula for water is H2O. The formula for ice also is H2O.

Both ice and water have the same chemical formula. Therefore, no chemical

change takes place. A change of state (such as melting ice) is a physical

change.

Energy is taken in when ice is melted. Changes of state are the only physical

changes where energy is take in or given off. Look at Figure G, and then

answer the questions below. (7 marks)

1. Does the ice look different after it is melted?

2. When ice changes to water, the link up of atoms (does, does not) change.

3. When water changes to ice, the link-up of atoms (does, does not) change.

4. The melting of ice is an example of a (physical, chemical) change.

5. When ice changes to a liquid, the ice (does, does not) take in energy.

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6. Usually, energy (is, is not) part of a physical change.

7. Energy is part of a physical change only when there is .

(electrolysis, a change of state)

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CHOPPING WOOD

FILL IN THE BLANK

(10 marks)

1. Does the wood look different after being chopped?

2. Is the wood still word?

3. Are the atoms changing the way they are linked up?

4. Are any elements being added?

5. Are any elements being lost?

6. Are any new products being formed?

7. Is the wood taking in energy?

8. Is the wood giving off energy?

9. The chopping of word is an example of a (physical, chemical) change.

10. What is the difference between a physical change and a chemical change?

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TRUE AND FALSE In the space provided, write “true” if the sentence is true, or put “false” is the sentence is false.

(10 marks)

1. A chemical reaction causes a chemical change.

2. A chemical change makes new products.

3. Elements can be lost or gained in a chemical reaction.

4. Energy can be taken in only during a chemical reaction.

5. The substances that take part in a chemical reaction keep their properties.

6. The new substances made in a chemical reaction have new properties.

7. a physical change makes new products.

8. The boiling of water is an example of a chemical change.

9. The electrolysis of water is an example of a chemical change.

10. Some physical changes involve taking in or giving off energy.

Write the words chemical change or physical change beside each of the following:

mixing salt and pepper

evaporation of water

electrolysis of water

cutting a marshmallow

toasting a marshmallow

burning magnesium

demolishing a car

the rusting of iron

melting of sugar

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baking a cake

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WORKBOOK LESSON: How Can Mixtures Be

Separated ? (6 marks)

1. Which pictures show straining?

2. Which picture shows filter paper being used?

3. Which picture shows pieces of iron being separated?

4. Which picture shows dissolving?

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5. Which picture shows evaporation?

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FILL IN THE BLANK

Complete each statement using a term or terms from the list below. Write your answers in the spaces provided. Some words may be used more than once. (13 marks)

mixture straining ironair size using a magnetdissolving dissolve strainerevaporation filter paper holesheated

1. Four ways to separate mixtures are:

2. Straining separates matter according to .

3. A separates matter by size.

4. A strainer has many .

5. We can separate a mixture of very tiny solid pieces and water by using .

6. We use a magnet to separate from a mixture.

7. When water evaporates, the vapour escapes in the .

8. A solid that seems to disappear in a liquid is said to .

9. Sugar and water are a .

10. A liquid will evaporate faster if it is .

WORD SCRAMBLE

(3 marks)

VISOLEDS

AVOPEATER

TIREXUM

MONDOCUP

TAGMEN

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FILL IN THE BLANK


Strainer J Strainer L 3 mm 4 mm 5 mmStrainer K 2 mm 3.5 mm 4.5 mm 6 mm

1. The marbles in Figure G measure across.2. The marbles in Figure H measure across.3. The marbles in Figure I measure across.4. The openings in Figure J measure across.5. The openings in Figure K measure across.6. The openings in Figure L measure across.7. The openings in Figure M measure across.8. will separate all the shown solids from the water.9. will separate none of the show solids from the water.

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10. is the largest strainer that can separate the solids in glass H.


1. Straining causes a chemical change.

2. Evaporation causes a chemical change.

3. A magnet causes physical change.

4. Dissolving causes a physical change.

5. Filter paper has large holes

6. Only scientists use strainers.

7. When liquid evaporates, it goes into the air.

8. Sugar dissolved in water is still sugar.

9. A magnet can separate a mixture of paper clips and rubber bands.

10. Hot water evaporates faster than cold water.

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HOW WOULD YOU SEPARATE THESE MIXTURES?

There are five methods for separating:

Magnet DissolvingStraining

Evaporation Filtration

Now decide which steps or steps are needed to separate the above Mixtures 1 to 5. Use the chart on the next page to write down the separation methods (outlined above) that you would use to separate these mixtures. In most cases, the order in which the steps are taken is not important.

(13 marks)

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Mixture 1 salt and iron filingsMixture 2 salt waterMixture 3 salt, iron filings, and waterMixture 4 gravel, sand and sugarMixture 5 gravel, sand, sugar, and iron filings

Mixture 1 salt and iron filings

Step 1:

Mixture 2 salt water

Step 1:

Mixture 3 salt, iron filings, and water

Step 1:

Step 2:

Mixture 4 gravel, sand and sugar

Step 1:

Step 2:

Step 3:

Step 4:

Mixture 5 gravel, sand, sugar, and iron filings

Step 1:

Step 2:

Step 3:

Step 4:

Step 5:

WORKBOOK LESSON: What Are Acids? document.doc 28

FILL IN THE BLANK

Complete each statement using a term or terms from the list below. Write your answers in the spaces provided. Some words may be used more than once.(11 marks)

never acid bluevinegar hydrochloric acid redlitmus paper hydrogen citric

dangerous

1. Lemons contain acid.

2. is a kind of indicator.

3. Acids turn litmus paper red.

4. litmus paper does not change colour in acids.

5. When acids wear away metals, gas is given off.

6. Acetic acid is found in household .

7. You stomach produces .

8. All acids contain the element .

9. Some acids are to touch or taste.

10. You should touch or taste an .

TRUE AND FALSE In the space provided, write “true” if the sentence is true, or put “false” is the sentence is false.

(marks)

1. Litmus paper is an indicator.

2. Acids turn red litmus paper blue.

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3. Acids contain hydrogen.

4. Acids wear away metals.

5. Oxygen is given off when acids wear down metals.

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WORKBOOK LESSON: What Are Bases? FILL IN THE BLANK


bitter dangerous opposite tochemicals do not change pinkchange indicators sour

lye1. Bases are a group of .2. Bases often act the ways that acids

act.3. Both acids and bases can be .4. Bases have a taste.5. Acids have a taste.6. Bases the colour of red litmus paper.7. Bases the color of blue litmus

paper.8. Phenolphthalein turns in bases.9. Phenolphthalein and litmus paper are .10. Soap contains a base called .

MATCHINGMatch each term in Column A with its description in Column B. Put your answer in the Column titled, Your Answer. You are to take the each letter beside an item in Column B and write it beside the item in Column A that it is describing. (5 marks)

Your Answer Column A Column Bred litmus paper A ammoniablue litmus paper B turns pink in basesphenolphthalein C turns blue in basesan acid D stays blue in basesa base E vinegar

TRUE AND FALSE (10 marks)

1. Bases taste sour.2. Bases feel slippery.3. Bases turn blue litmus paper red.4. Bases turn red litmus paper blue.5. Phenolphthalein turns deep pink in bases.6. Bases wear away metals.7. Bases can be dangerous.

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8. Acids contain the OH− groups9. Acids contain the H+ groups.10.All bases are strong.

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The test tube in Figure A contains twenty drops of sodium hydroxide (NaOH).

One drop of phenolphthalein is added. The phenolphthalein turns deep pink.

This shows that sodium hydroxide (NaOH) is

(an acid, a base)

A different dropper is used in Figure B to add fifteen drops of hydrochloric acid (HCI) – one drop at a time.

The solution stays pink.

This shows that the solution is

. (is neutral, is an acid, is still a base)

More hydrochloric acid is added—one drop at a time, until the pink disappears.

The loss of the pink colour shows that the solution is

(an acid, no longer a base)

3 marks

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The solution is tested with blue litmus paper.

The blue litmus paper stays blue.

This shows that the solution is not

(an acid, a base)

The solution is tested with red litmus paper.

The red litmus paper stays red.

This shows that the solution is

(an acid, a base)

The mixture neutral.(is, is not)

Fill in the boxes to show that happened:

An plus a makes a and water

Hydrochloric acid + sodium hydroxide Sodium chloride + water

HCI + NaOH NaCI + H2O

NaCI in H2O is (an acid, a base, salt water)

2 marks

5 marks

FILL IN THE BLANK Complete each statement using a term or terms from the list below. Write your answers in the spaces provided. Some words may be used more than once. (15 marks)

water a base tableneutralization many kinds neutrallitmus paper reaction phenolphthaleinan acid a salt

1. Lemon juice is an example of . Lye is an example of

.

2. Any substance that is neither an acid nor a base is said to be

.

3. An example of a neutral liquid is .

4. The mixing of an acid and a base causes a chemical

5. If we mix the right amounts of an acid and a base, we get

and .

6. The chemical reaction between an acid and a base to produce a salt and

water is called .

7. There are of salts.

8. The most common salt is salt.

9. Salt water does not change the colour of

or .

10. Salt water is neither no .

Salt water is .


Your Answer Column A Column BHCI A acid

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NaOH B waterH2O C baseNACI D indicatorPhenolphthalein E salt


1. An acid is neutral.

2. A base is neutral.

3. Water is neutral.

4. There is only one formula for water.

5. There is only one kind of salt.

6. Salt water is neutral.

7. If you mix an acid with a base, you get only water.

8. Blue litmus paper changes to red in salt water.

9. Red litmus paper stays red in salt water.

10.Phenolphthalein turns pink in salt water.

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WORKBOOK LESSON : What is Energy? FILL IN THE BLANK Complete each statement using a term or terms from the list below. Write your answers in the spaces provided. Some words may be used more than once. (6 marks)

chemical Energy matterElectric Heat mechanical

1. is the ability to do work.

2. Whenever anything moves, it is using energy.

3. energy passes heat from one object to another.

4. energy makes light bulbs light up and radios play.

5. Gasoline has energy.

6. Energy is not .

TRUE or FALSE. (7 marks)

QUESTION TRUE/FALSE

There is only one kind of energyWhen you jump and run you do work.Gasoline has heat energy.Each kind of energy can change into other kinds of energy.It does not take energy to hit a volleyball.Heat energy passes heat from one object to another.Energy has mass and takes up space

Answer the following questions.

1. What are four kinds of energy? (4 marks)

2. What is energy?

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(1 mark)

List as many uses for electrical energy in the home and workplace. Same examples have been provided. (5 marks)

HOME WORKPLACE

NON-RENEWABLE RESOURCES1. What is meant by the term “Non-Renewable Resources”? (2 marks)

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2. List 5 non-renewable resources. (5 marks)

3. Why is the removal of coal from mines hazardous to miners’ health? (2 marks)

4. Explain what is meant by the term “clean coal” and briefly describe the process? (3 marks)

5. Where is coal mined in Canada? (2 marks)

6. What facts have you learned about natural gas, as found in the article “Little Blue Flame”? (More room on top of next page!!) (3 marks)

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7. Natural gas is an outstanding fuel because it is ,

, and . (1 mark)

8. In the article, “Made of Oil”, find the answers for the following questions:

a) % pf oil and natural gas is used for and other forms of energy. (2 marks)

b) Where is the other 5% used? . (1 mark)

c) What is meant by the term “petrochemical”? (2 marks)

d) Why does glass and paper cost more and actually take more energy to produce than plastics and petrochemicals? (2 marks)

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9. What is a “tar sand” and where can it be found in Canada? (2 marks)

RENEWABLE RESOURCES1. What is meant by the term “Renewable Resources”? (2 marks)

2. List 5 renewable resources. (5 marks)

3. Why is it difficult to rely on solar energy? (1 mark)

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4. Why do greenhouses use black containers filled with water in their operations? Explain. (2 marks)

5. Many sources of renewable energy were presented in this lesson. If you had the choice to use any renewable energy, which would you use and why? (3 marks)

6. How is groundwater used to provide energy? (2 marks)

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7. How do tides provide energy? (2 marks)

8. What is a “pyroshpere”? (2 marks)

9. What is a “wind farm”? (1 mark)

10. Why does solar energy need to be captured and explain 3 ways this is done. (3 marks)

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11. What is a “Radiometer”? (2 marks)

12. List 6 other energy sources. (3 marks)

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