States of Matter
Phase Changes
Temperature
Thermal Energy
Real World Connections
100

What are the three states of matter?

Gas, solid, liquid

100

When a solid turns into a liquid

 melting

100

As the temperature increases, particle motion becomes _____.

Faster

100

What is thermal energy ?

Thermal energy is the sum of the kinetic energy of all the particles in a substance. 



100

Morning dew on grass.

melting

200

In this state of matter, particles vibrate in fixed positions

solid

200

When gas turns into a liquid

 Condensation

200

When the temperature rises, does the space between particles increase or decrease


increase

200

 thermal energy is related to the __ of particles.

motion

200

Ice cube melting.

Meltling

300

Particles move freely in all directions

Gases

300

When the particles space out and move freely after being in a liquid state

 Evaporation

300

The space between particles usually occurs when?

The temperature rises

300

When thermal energy increases, do particles move faster or slower?

faster

300

Puddle disappearing

melting

400

Particles are able to slide past each other

liquid

400

When a solid turns directly into a gas

Sublimation

400

Does lower temperature cause particles to move more slowly or faster?

slower

400

Temperature is a measure of average ___ energy.

kinetic

400

soda fizzing

condensation

500

In this state of matter, movement is constant

Solid

500

When a gas turns directly into a solid

Deposition 

500

What happens to the temperature during the phase change of melting 

Temperature remains constant

500

Do more particle collisions indicate more or less thermal energy ?

more

500

Cooking Pasta

boiling