chemistry topic 3

Question 1

Melting

Answer 1

the change of state from solid to liquid

Question 2

Boiling

Answer 2

The change of state from liquid to gas

Question 3

Freezing

Answer 3

The change of state from liquid to solid

Question 4

condensing

Answer 4

The change of state from gas to liquid

Question 5

Sublimation

Answer 5

The change of state from solid to gas,or gas to solid

Question 6

Endothermic

Answer 6

A change that takes in heat energy

Question 7

Exothermic

Answer 7

A change that gives out heat energy

Question 8

Diffusion

Answer 8

The gradual movement of particles from an area of high concentration to an area of low concentration until evenly mixed, due to a random motion of particles.

Question 9

Evaporation

Answer 9

When we heat liquid than the particles gain energy and move faster and faster.

Question 10

freezing

Answer 10

the change of state from liquid to solid

Question 11

Diffusion in gases

Answer 11

Gas particals are far apart andhave a lot of energy, so the particals can move quickly.This means that gases defuse the fastest.

Question 12

Diffusion in liquids

Answer 12

Liquid particles have less energy and the particles are held together more strongly than a gas, their particles move slower than gases, so liquids defuse slower than gasses.

Question 13

Diffusion in solids

Answer 13

Particles in a solid have the least energy and are the closest together, they defuse the slowest of all state matter, In fact, because the particles defuse so slowly we say that solids do not diffuse.