Reactions Periodic Table & Elements

Physical Chemical Changes

Compounds & Mixtures

Physical Chemical properties

10 10 10 10 10

20 20 20 20 20

30 30 30 30 30

40 40 40 40 40

50 50 50 50 50

60 60 60 60 80

•This law says that atoms cannot be created or destroyed in a reaction

??10 points

Law of conservation of MASS/MATTER

10 points

•Atoms re-arrange to form new compounds during…?

??

20 points

During a chemical reaction

20 points

• The following is a chemical reaction:

A) Dissolving sugarB) Rusting nailC) Glass meltingD) Alcohol vaporizing

30 points

•B) Nail Rusting

•30 points

•CH4 + 2O2 CO2 + 2H2OThis is a chemical reaction because:A)It is balancedB)A new substance is formedC)It creates a gas and a solidD)There are 2 substances on the

reactant side

40 points

B) A new substance is formed40 points

CH4 + 2O2 CO2 + 2H2O

Why do the O2 and H2O have a “2” in front of them?

50 points

To BALANCE the reaction (same amount of atoms in and out)

50 points

CH4 + 2O2 CO2 + 2H2OWhich is a PRODUCT in this reaction?

A)O2

B)HC)CO2

D)CH4

60 points

•C) CO2

60 points

•These elements are VERY reactive metals:–A) Alkaline Earth Metals–B) Noble gases–C) Transition Metals–D) Alkali Metals

10 points

–D) Alkali Metals

10 points

•These elements are ductile, malleable, conduct heat and electricity, and are useful for building things

20 points

•METALS

•20 points

This metalloid is used in making glass and computer chips:

30 points

Silicon

30 points

This group of nonmetals includes gases that do not react easily with other elements:

40 points

40 points

Noble gases

•Elements MOST closely related to each other are arranged in ______________ on the periodic table.

50 points

50 points

GROUPS

Most of the elements are:A) Natural nonmetalsB) Natural metalsC) Synthetic nonmetalsD) Synthetic metals

60 points

60 points

B) Natural metals

•This type of change causes NEW substances to be formed

10 points

Chemical changes

10 points

•This type of change does not form new substances, and includes phase changes

20 points

Physical Changes

20 points

•Which is PHYSICAL change?A)Iron rustingB)Hydrogen + oxygen waterC)Sulfur and oxygen forming Sulfur dioxideD) Liquid nitrogen becoming a gas at room temperature

30 points

Liquid nitrogen becoming a Gas at room temperature

30 points

When you stir salt into water, you form:

A)A new substanceB)A new compoundC)A solutionD)A new element

40 points

C) A solution

40 points

•Which 2 materials form a new substance when combined?

A)Water and Kool-Aid powderB)Baking soda and vinegarC)Iron nails and penniesD)Salt and pepper

50 points

B) Baking soda and vinegar

50 points

60 points

Which is a CHEMICAL change?

A) spreading mustard

B) mixing spices

C) cutting a lawn

D) making a cake

D) making a cake

60 points

•Compounds are different from mixtures because:

10 points

10 points

COMPOUNDS: chemically attached

MIXTURES: physically mixed, not chemically attached

H2SO4 has ___ total atoms?

20 points

7 atoms inH2SO4

20 points

Which is/are a compound?

A) Berkyllium

B) Hyrogen

C) Propane

D) Water30 points

C) Propane

C3H8

D) Water

30 points

HOW are compounds formed?

40 points

Atoms CHEMICALLY attach to each other

40 points

50 points

A substance is formed from 2 substances physically joined – this is a/an:

A) element

B) mixture

C) compound

D) atom

50 points

B) mixture

What is the chemical formula for GLUCOSE (a

simple sugar)?

60 points

C6H12O6

60 points

•This property explains how tightly packed atoms are

10 points

DENSITY10 points

Soda, sweet tea, and salt water are all what type of matter?

20 points

Homogeneous SOLUTIONS20 points

Water and salt water have different melting and boiling points because...?

30 points

They are different substances.

Every substance has its own M. & B. points

30 points

Water molecules begin to speed up, so that they can now move past each other. What phase transition is occurring?

A) freezing

B) melting

C) evaporating

D) condensing

40 points

B) melting

40 points

Which is/are insoluble in water?

A) sugar

B) sand

C) oil

D) drink mix

50 points

B) sand

C) oil

50 points

Which is a NATURAL HOMOGENEOUS solution?

A) salt

B) soda

C) steel

D) blood

80 points

D) Blood

80 points