​Instructions

• ​make a list of the vocab terms in your notebook

• ​leave room to fill in the definitions later

• ​leave empty space around the definitions so you can read them

• ​finish your vocabulary list during down time in class, or for homework

• ​use your list on the quizizz daily (Tues - Fri)

• ​Friday quizizz counts!

​Vocab list

1. density​

2. particle​

3. ​solid

4. ​liquid

5. ​gas

6. ​heat

7. ​melt

8. ​freeze

9. ​vaporize

10. ​condense

​density

• a physical property that describes the amount of mass per unit of volume​

​particle

• ​small objects that have measurable properties

• ​in chemistry, particles can be atoms or molecules

​solid

• particles vibrate rather than flow

• ​shape is fixed (not changing)

• ​cannot be compressed

​liquid

• particles flow past one another

• ​takes the shape of the container

• ​cannot be compressed

​gas

• particles are spread out and flying around the container

• ​takes the shape of the container

• ​is able to be compressed

​heat

• a form of energy that affects temperature and particle movement

• aka thermal energy​

​melt

• a solid becomes a liquid as heat is added and particle motion speeds up

​freeze

• ​a liquid becomes a solid as heat leaves a substance and particle motion slows down

​vaporize

• ​a liquid becomes a gas as enough heat is added for particles to break free and fly away

​condense

• ​a gas becomes a liquid as heat is lost and particles stop flying freely