Download - Chemistry Jeopardy

ChemistryJeopardy

Learning Objectives (in ? Form)• How are elements and compounds similar

yet different? What are some examples of each?

• How are compounds and mixtures different?

• What’s the difference between mass and weight?

• What units are used to measure volume?• How can density be determined? How can

density be used to identify substances?

Learning Objectives (in ? Form)• What’s the difference between a chemical and

physical change? How can you tell which change occurred?

• How are changes in matter related to changes in energy (endothermic vs. exothermic)?

• What are the 8 forms of energy related to changes in matter?

• What are some energy transformations that occur in the real world?

RULES1. The team(s) who answer correctly

win the point value of the question.

2. If a team answers a daily double incorrectly, then that team will lose the number of points they bid.

3. There are two daily doubles available. Let’s

play

100

200

300

400

500

Final Jeopardy

100 100 100

200200200200

300300300

400400400

500500500

Types of Matter

M, V, D Changes in Matter

Matter & Energy

Leftovers

Types of Matter for 100

Which of the diagram boxes (A, B, C, or D) from p. 38 represents a compound? Which one represents a mixture?

Compound- D

Mixture- C


Which of the following can be broken down by physical means: Elements, Compounds, Mixtures? Which one can be broken down by chemical means: Elements, Compounds, Mixtures?

Mixtures- can be physically broken down Compounds- can be chemically broken

down


What are 2 differences between a compound and a mixture?

A compound’s parts are bonded together in a set ratio while a mixture’s are not. A mixture’s parts can be separated by physical means while a compounds cannot.


How do the physical and chemical properties of a compound compare to the elements that make up that compound?

The elements have different properties than the compound they make up.


Identify the following as an element, compound, homogeneous mixture, or heterogeneous mixture: carbon monoxide (CO), nitrogen gas (N2), sugar dissolved in water, a pizza.

Compound (CO), element (N2), homogeneous mixture (sugar water), heterogeneous mixture (pizza)

M, V, D for 100

The measurement of the force of gravity acting on your body is called your ____________. How is this measurement of force different from mass in terms of measuring it at different locations?

Weight- changes depending on the force of gravity at various locations

M, V, D for 200

What would be your mass if you are 50 kg on Earth and you go to a planet with 5 times the gravity of Earth? What would your weight be if you are 110 lbs. on Earth and you go to the same planet?

Mass is still 50 kgWeight = 110 x 5 = 550 lbs.

M, V, D for 300

The amount of matter contained in a certain volume is called ___________. How can this be used to determine if an object will sink or float in water? Provide water’s density in your answer.

Density- more dense substances sink (more than 1 g/mL) , less dense substances float (less than 1 g/mL)

M, V, D for 400

Suppose an object has a mass of 23 g and a volume of only 2 mL. What is the likely identity of the object?

Lead

Substance Density (g/mL)

Water 1.0

Oak Wood 0.85

Lead 11.3

Platinum 21.5

M, V, D DAILY DOUBLE!!!

Suppose you obtained a sample of oak wood and platinum both with a volume of 5 cm3. Which would have the greater mass? Explain your answer.

Platinum- it has a higher density so if the volumes were equal, then the platinum sample have to have a greater mass.

Substance Density (g/mL)

Water 1.0

Oak Wood 0.85

Lead 11.3

Platinum 21.5

Changes in Matter for 100

What’s the difference between a chemical and a physical change?

Chemical- new substance(s) are formed

Physical- still the same substance after the change


If you are examining numerous changes in matter, then what signs will you look for to see if the change is a chemical change?

Bubbles of gas/fizzing, color change, light and/or heat is given off


Which of the following are physical properties: water freezes at 0oC, iron rusts, silverware becomes tarnished, dry ice (CO2) changes into a gas, copper metal is shaped into sheets of metal?

Physical properties = Water freezing, dry ice becoming a gas, copper being made into metal

sheets.

Changes in Matter DAILY DOUBLE!!!

Which of the following properties can be used to help identify a substance: density, melting point, boiling point, chemical reactivity, physical appearance?

ALL OF THEM CAN!


Identify the following as a chemical or a physical change: Ice melting, combustion, electrolysis, glass breaking, frying an egg, milk souring.

Ice melting & glass breaking- Physical Changes.

Electrolysis, Combustion, Frying an egg, Milk souring- Chemical Changes.

Matter & Energy for 100

Whenever matter changes, there is also a change in ___________. Is this change always noticeable?

Energy; No


The type of energy which includes visible light, X-rays, UV rays, and all other types of radiation is called ____________ energy.

Electromagnetic


What type of temperature change would you expect for a typical exothermic process? Endothermic process?

Exothermic- temp. goes up/positive (gives off energy)

Endothermic- temp. goes down/negative (takes energy out of the surroundings)


Identify the energy transformations that take place for the following processes: combustion, photosynthesis, using your TV.

Combustion- chemical into thermal and electromagnetic

Photosynthesis- Solar/electromagnetic into chemical

TV- electrical into sound and electromagnetic


Classify the following processes as an endothermic or exothermic change and as a chemical or physical change: combustion, photosynthesis, sweat evaporating from your skin. Note that sweating (well, the sweat leaving your skin) is your body’s cooling process.

Combustion- Chemical & ExothermicPhotosynthesis- Chemical & EndothermicSweat Evaporating- Physical & Endothermic

Leftovers for 200

Which of the following are units of volume: grams, milliliters (mL), g/mL, centimeters cubed (cm3), Liters (L)?

mL, cm3, & Liters

Density

You are given 5 different liquids: I, II, III, IV, V. Rank them from most dense to least dense based upon the following information.

Within four different containers: I rests on top of II, V rests on top of I, IV rests on top of V, II rests on top of III.

Most dense to least dense:III, II, I, V, IV