aim : how does matter change phases?

AIM: How does matter change phases?

Identify the five ways in which matter can change from one phase to another

AIM: How does matter change phase?

Condensation, evaporation, freezing, melting, sublimation

Note: Holt O/H #206

Solid liquid gas

Note: Holt O/H #206

Describe the molecules of the solid!

Solid liquid gas

Note: Holt O/H #206

Describe the molecules of the liquid!

Solid liquid gas

Note: Holt O/H #206

Describe the molecules of the gas!

Solid liquid gas

SOLIDS:

Definite Shape and Volume

have less energy

the particle vibrate --- but are very close together

LIQUIDS:

Definite Volume. But takes the shape of its container

have a little more kinetic energy than solids

GAS:

Has NEITHER a Definite Shape nor a Definite Volume

have the most kinetic energy

The Kinetic energy of a molecule:

Which type of molecule has the most kinetic energy? (solid, liquid, or gas)

Which type of molecule has the least kinetic energy?

What happens when you add heat energy to a solid?

What happens to the molecules of the solid?

How would you describe its kinetic energy?

What happens when you add heat energy to a solid?

The solid turns into a liquid

That is called melting!

What phase change happens when you add heat energy to a solid?

What happens when you add heat energy to a liquid?

What happens to the molecules of the liquid?

How would you describe its change in kinetic energy?

What happens when you add heat energy to a liquid?

The liquid turns into a gas?

This is called evaporation

What PHASE change happens when you add heat energy to a liquid?

What happens if you remove the energy from the liquid?

The liquid turns to a solid.

The kinetic energy slows down

The particles get closer together

Can you really do that?

I C E

The phase change is called freezing!

What happens if you remove the energy from the gas?

The gas turns into a liquid

How would you describe the change in Kinetic Energy?

How would you describe the change in vibration of the molecules?

The gas turns into a liquid

This is called condensation!

Energy and States of Matter

STATE Kinetic Energy

Particle Movement

Solid

Liquid

Gas

Energy and States of Matter

STATE Kinetic Energy

Particle Movement

Solid LEAST

Liquid

Gas

Energy and States of Matter

STATE Kinetic Energy

Particle Movement

Solid LEAST

Liquid More

Gas Most (hottest)

Energy and States of Matter

STATE Kinetic Energy

Particle Movement

Solid LEAST least

Liquid More

Gas Most (hottest)

Energy and States of Matter

STATE Kinetic Energy

Particle Movement

Solid LEAST least

Liquid More More

Gas Most (hottest)

most

Energy and Phase Changes

STATE Adding Energy

Removing Energy

Solid

Liquid

Gas

Energy and Phase Changes

STATE Adding Energy

Removing Energy

Solid FreezingLiquid Melting Condensin

gGas Evaporatin

g

Alka Selser, Water Bottle, Balloon

Question: When matter changes phase, does its mass change?

Worksheet Concepts 12-2Worksheet PH 2-1

Homework:

INTERNET QUESTIONS

FINISH WORKSHEETS

Write a Paragraph summarizing the AIM