Chapter 6 Section 3

Thermal Energy and States of Matter

Observations1. What is the matter in this

beaker made of?2. What states of this matter are

present?3. What will happen if it sits here

for a while?

Three States of Matter

1. All _____ exists in 3 different forms, they are _______, _______ and _________

2. Are ice & liquid water made up of the same substance?

3. How are ice and liquid water different?

Three States of Matter

Solids1. The _________ of a solid

don’t move out of place, but they ________ back and forth in one place.

2. Solids have a fixed ______ & a fixed ________.

Liquids1. The particles of a liquid

______ around, but they are still held _____.

2. Liquids don’t have a fixed ______ but do have a fixed ______.

Gases

1. The particles of gases move _______, & they don’t _____ together.

2. Gases don’t have a fixed ______ or _______.

Draw each & identify the stateExplain at least 3 differences

between each picture.

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Changes of State

1. Changes of state depend on ______ ______ being absorbed or released.

2. What is thermal energy?

3. If you heat a solid, it will ________.

Changes of State4. What happens to matter when

you take heat away?5. If you take heat away from a

liquid, it will ________.6. If a liquid gains heat, it

_____________.7. If a gas loses heat, it

__________.

Changes of State

During a change of state, the thermal energy of an object _____________, while the temperature ______ ____ _______.

Review1. What are the 3 states of

matter?2. How does a change of

state happen?3. What is the difference

between boiling & evaporating a liquid?

Review4. Why does matter expand

when it is heated?5. How many different forms or

states does matter exist in on Earth?

6. What is the temperature at which a solid changes into a liquid called?

Review7. When vaporization only

takes place at the surface of a liquid, that is called _____________.

8. What is the term used to describe the expansion of matter when it is heated?

Review9. What is one common way

thermal expansion is used?

10. What happens to substances when they are cooled?

11.The most disorganized state of matter is the _____ state.

Review12.During a change of state, the

addition or loss of _________ energy changes the arrangement of particles in the substance.

13.A thermometer uses the ability of liquids like alcohol and mercury to ________ when heated.

Review14.Boiling is vaporization that takes

place at or ______ the surface of a liquid.

15.As a substance changes state, there is no change in the __________ of the substance, only in its thermal energy.

Review16.In hot and dry places, fountains

are used to cool down backyards, how does this happen?

Interactive Tutorials

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