Module 2 Test

Question 1

What type of change occurs when water changes from a solid to a liquid

Answer 1

a phase change and a physical change

Question 2

Sugar is a substance made of three elements joined in a fixed proportion. Sugar is an example of a(n)

Answer 2

compound

Question 3

A substance that has little tendency to change into other substances is said to have low

Answer 3

reactivity

Question 4

Ninety-nine percent of all matter than can be observed in the universe is

Answer 4

plasma

Question 5

A substance that is made up of only one kind of atom is a(n)

Answer 5

element

Question 6

If an unknown substance CANNOT be broken down into simpler substances, it is ___.

Answer 6

an element made up of one kind of atom.

Question 7

Matter that has a definitive volume, but no definitive shape

Answer 7

liquids

Question 8

Which of the following have the highest viscosity: corn syrup, water, vegetable oil, or alcohol?

Answer 8

corn syrup

Question 9

When a physical change in a sample occurs, what changes does that affect?

Answer 9

shape, size, and volume

Question 10

Forces of attraction limit the motion of particles most in

Answer 10

solids

Question 11

A substance that has high reactivity ___.

Answer 11

easily combines chemically with other substances

Question 12

Which of the following are pure substances: solutions, compounds, homogeneous mixtures, or heterogeneous mixtures

Answer 12

compounds

Question 13

A material that is both malleable and conducts electricity easily is most likely ___.

Answer 13

a metal

Question 14

What are some clues that a chemical change has occured

Answer 14

change in color, production of a gas, formation of a precipitate

Question 15

The phase change in which a solid changes directly into a gas without first becoming a liquid is called

Answer 15

sublimination