Science Test 11/8/23

Question 1

Atom

Answer 1

Smallest unit of matter.

Question 2

Element

Answer 2

Cannot be broken down by chemical means.

Question 3

Matter

Answer 3

Physical substance that has mass and occupies space (volume).

Question 4

Molecule

Answer 4

2 or more of the same atoms held together by a chemical bond.

Question 5

Compound

Answer 5

2 or more different atoms held together by a chemical bond.

Question 6

How are molecules different from compounds?

Answer 6

Compounds have different atoms.

Question 7

How do you tell if it is a molecule or compound?

Answer 7

Compounds have different atoms, molecules have the same.

Question 8

How is an element different from an atom?

Answer 8

Atoms are the smallest unit of matter, one isn’t.

Question 9

How is an element different from a compound?

Answer 9

Elements cannot be broken down by chemical means, compounds aren’t.

Question 10

How are atoms arranged in a solid?

Answer 10

Molecules are packed together (fixed volume).

Question 11

How are atoms arranged in a liquid?

Answer 11

Slightly packed together - less than a solid (fixed volume).

Question 12

How are atoms arranged in gas?

Answer 12

Molecules are spread out (not fixed volume).

Question 13

How do atoms move in solids?

Answer 13

They don’t really move.

Question 14

How do atoms move in liquids?

Answer 14

They move a little.

Question 15

How do atoms move in gas?

Answer 15

They move a lot.

Question 16

Describe melting.

Answer 16

Phase change from solid to liquid.

Question 17

Describe freezing.

Answer 17

Phase change from liquid to solid.

Question 18

Vaporization

Answer 18

Phase change from liquid to gas.

Question 19

Evaporation

Answer 19

Phase change from liquid to gas on the surface of a liquid.

Question 20

Condensation

Answer 20

Phase change from gas to liquid.

Question 21

Sublimation

Answer 21

Phase change from solid to gas.

Question 22

Deposition

Answer 22

Phase change from gas to solid.

Question 23

How can you identify a compound?

Answer 23

2 different capital letter.

Question 24

How can you identify an element?

Answer 24

1 capital letter.

Question 25

How can you identify a molecule?

Answer 25

1 capital letter with a number.