Physical and Chemical Properties and Changes

Question 1

Chemistry

Answer 1

Study of matter and the changes it undergoes

Question 2

Matter

Answer 2

Anything that occupies space and has mass

Question 3

Element

Answer 3

A substance that cannot be broken down or separated by chemical means

Question 4

Compound

Answer 4

A substance made up of 2 or more atoms of 2 or more different elements. Joined by chemical bonds.

Question 5

Mixture

Answer 5

Two or more pure substances NOT chemically joined together

Question 6

Solid

Answer 6

Tightly packed; vibrating around a fixed position with definite shape and volume.

Question 7

Liquid

Answer 7

Tightly packed but far enough apart to slide over one another. Indefinite shape and definite volume.

Question 8

Gas

Answer 8

Particles are far apart and move freely; Indefinite shape and volume.

Question 9

True or False

A physical change is a change of matter from one form to another without a change in chemical properties.

Answer 9

True

Question 10

True or False

A physical change is a change that occurs when a substance changes composition by forming one or more new substance.

Answer 10

False

Question 11

True or False

Color change is evidence that a chemical change may have occurred

Answer 11

True

Question 12

True or False

Fizzing or foaming is evidence that a chemical change may have occurred

Answer 12

True

Question 13

True or False

Production of light is evidence that a physical change may have occurred.

Answer 13

False

Question 14

True or False

Production of heat is evidence that a chemical change may have occurred

Answer 14

True

Question 15

True or False

Precipitate formation is evidence that a physical change may have occurred

Answer 15

False

Question 16

True or False

Physical changes can sometimes be reversed

Answer 16

True

Question 17

True or False

Changing the size and shape of pieces of wood would be a chemical change.

Answer 17

True

Question 18

True or False

In a physical change, the makeup of matter is changed.

Answer 18

False

Question 19

Evaporation is a __________ change. (Choose Physical or Chemical)

Answer 19

Physical Change (Evaporation)

Question 20

Burning wood is a ____________change. (Choose Physical or chemical)

Answer 20

Chemical Change

Question 21

True or False

Acid rain damaging a marble statue is a physical change.

Answer 21

False (the acid rain is breaking down the marble as a chemical)

Question 22

flammability

Answer 22

the ability of a substance to burn; Chemical property

Question 23

reactivity

Answer 23

the ability of 2 or more substances to combine and form one or more new substances