EQ: What happens when matter changes state?

PHYSICAL PROPERTIES OF MATTER:

WHEN MATTER CHANGES STATE

MATTER

Chemical Properties

Physical Properties

all matter hasMass

Volume

states

Solid

Liquid

Gas

flammability

oxidation

reactivity

toxicity

Density

SolubilityVolume

Melting Point

Freezing Point

can undergo

Chemical Changes

Physical Changes

identified by

• Matter can undergo 2 types of changes: physical changes and chemical changes.

• Do you have any idea what the differences between the 2 are?

• Can you give any examples of a physical change or a chemical change?

• It is important to note that all matter can go through changes!

PHYSICAL & CHEMICAL CHANGES

• Chemical Change• Physical Change

PHYSICAL & CHEMICAL CHANGES

Does this help?

Physical Change: A change in which no new substances are formed

It does not change the type of matter the object is made of.

It can change the shape, size or phase of the matter.

Many physical changes can be easily reversed.

• Brainstorm a list of physical changes that we as humans can go through. {Be prepared to share your best idea}

• Brainstorm a list of physical changes that matter can go through. {Be prepared to share your best idea}

A CLOSER LOOK AT PHYSICAL CHANGES…

Think: change in size, form, texture, shape, or phase

• Think of a few ways that you could physically change this piece of paper that I am giving you. How many different ways can you think of? {Pick your most creative idea and demonstrate it}

• Which of these are changes to the state of matter? {solids, liquids, gases}

Examples of physical changes:

REVIEW

Phase

Motion of Particles

Speed of Particles

Solid

Liquid

Gas

Particles are close, but can slide past one another

Particles vibrate in place and are tightly packed

Particles are constantly expanding and are far apart

Fast

Medium

Slow

What might cause the particles in solids, liquids, and gases to move faster and expand or start to slow down and pack tighter together?

• For this activity, you will be selecting 2 white cards from the Science folder.

• Look back in your notes and determine whether the clue on the card is a clue to a solid, liquid, or gas.

• In a moment, you will be receiving a secret card on your back that says: Solid Liquid or Gas

• When you are instructed to, you will travel around the room giving away 2 clue cards & receiving 2 clue cards.

• You will look at the clue cards that students give you and determine whether your secret card says: Solid, Liquid, or Gas

REVIEW & REINFORCEMENT GAME

• It’s all about the addition of heat or the loss of heat!You can make a connection to something that you already know:

• Penguins huddle together, tightly packed, and move very little when the weather gets very cold.

• If an extremely hot heat source came close to a group of people, you would all probably scatter away quickly expanding out in all directions.

WHAT REACTION DID YOU HAVE TO HEAT?

As temperature increases, the energy of the particles and motion increases.

Meaning that the atoms move more quickly

Check out: http://phet.colorado.edu/en/simulation/states-of-matter-basics

Most substances can exist as a solid, liquid, or gas depending on temperature.