The Three States of Matter

Question 1

How do particles move in a substance in the solid state?

Answer 1

Particles vibrate about fixed positions

Question 2

Why can a liquid flow?

Answer 2

Because its particles move around, sliding over each other

Question 3

Why can a gas be compressed?

Answer 3

Because it’s particles are far apart

Question 4

What is the name of the change of state from gas to liquid?

Answer 4

Condensing

Question 5

In which change is energy transferred from the surroundings to the substance?

Answer 5

Melting

Question 6

Why is energy transferred from the substance to the surroundings when a substance freezes?

Answer 6

Because forces of attraction get stronger

Question 7

Which two states of matter are involved in sublimation?

Answer 7

Solid and gas

Question 8

A substance has a melting point of -7°C and a boiling point of 59°C. What is its state at room temperature (20°C)?

Answer 8

liquid

Question 9

A substance has a melting point of -210°C and a boiling point of -196°C. What is its state at -190°C?

Answer 9

Gas