Substances Can Change from One State to Another

Question 1

What do physical changes do?

Answer 1

Don’t change particles, just arrangement or their energy

Question 2

1. What happens when a solid is heated?

Answer 2

It’s particles gain more energy

Question 3

2. What does this make the particles do? What does this do to the solid?

Answer 3

The particles vibrate more, which weakens the forces that hold the solid together, making the solid expand

Question 4

3. What happens at a certain temp?

Answer 4

The particles have enough energy to break free from their positions. This is called melting - solid turns into liquid

Question 5

4. What happens when a liquid is heated?

Answer 5

The particles get even more energy

Question 6

5. What does this energy make the particles do?

Answer 6

Move faster, weakening and breaking the bonds holding the liquid together

Question 7

6. What happens at a certain temp?

Answer 7

The particles have enough energy to break their bonds. Called evaporating and the liquid turns to gas

Question 8

How does a gas go to a liquid?

Answer 8

Condensing - heat energy given out

Question 9

How does a liquid go to a solid?

Answer 9

Freezing - heat energy given out

Question 10

How does a liquid go to a gas?

Answer 10

Evaporating - heat energy supplied

Question 11

How does a solid go to a liquid?

Answer 11

Melting - heat energy supplied

Question 12

How does a solid go to a gas?

Answer 12

Subliming - heat energy supplied