Question

1. in which state does matter completely fill its closed container?

a) solid
b) gas
c) ice
d) liquid

1. which state of matter has a fixed shape and volume and its molecules move very slowly?

a) plasma
b) solid
c) liquid
d) gas

1. when a gas turns into a liquid, it is called

a) melting
b) freezing
c) evaporation
d) condensation

1. true or false? taste is not a physical property of matter.

a) false
b) true

1. which of the following can be classified as matter?

a) the letter a
b) the month august
c) an idea
d) a lake

Explanation:

1. Gases expand to fill their containers completely due to the high - energy and free - moving nature of their molecules.
2. Solids have a fixed shape and volume because their molecules are closely packed and move very slowly in a fixed position.
3. Condensation is the process by which a gas changes into a liquid when it loses energy.
4. Taste is a chemical property related to the interaction of substances with taste - sensing receptors, not a physical property like mass, volume, etc.
5. Matter is anything that has mass and takes up space. A lake is made of water (a substance), so it is matter.

Answer:

1. b) Gas
2. b) Solid
3. d) Condensation
4. b) true
5. d) a lake