Essential Questions What is a physical property? What are the three states of matter? Can you identify characteristics of solids, liquids, and gases?

Essential Questions

• What is a physical property?• What are the three states of matter?• Can you identify characteristics of

solids, liquids, and gases?

Physical Properties• All of the characteristics you used to

describe the rocks (smooth, multicolored, heavy, etc) are called physical properties.

• A physical property is something you can observe or measure (shape, texture, color, size, etc).

Think About It Another Way..

How would you describe a pencil? – Yellow– Long– Thin, – Has 6 sides– You use it to write– The tip breaks easily

These descriptions have something in common- they all

describe the pencil itself.

States of Matter•Another physical property of matter is the state that it’s in. –Solid–Liquid –Gas

Solids• In a solid, particles are packed tightly together. Because

they are so tight, they vibrate instead of always moving.• Solids have an exact shape and volume.• Desks, chairs, bowling balls, pencils, etc. are all examples

of solids.

With your partner, think of 5 solids…

Liquids• Liquids change shape and can be poured.• Liquids take the shape of the container they are in.• Particles move but much slower than gases.• Orange juice, milk, water, soda, etc. are all examples

of liquids.

With your partner, think of 5 liquids…

Gases• Gases have no definite shape or volume.• Particles are far apart and move rapidly. Particles

actually move the fastest in a gaseous form. • Oxygen, helium, nitrogen, etc. are all examples of

gases. • Air is actually a mixture of several gases, not a gas

itself.

Let’s ReviewWhich physical property can be the same for

both a large marble and a small one?

A.) color

B.) mass

C.) volume

D.) weight

Two clear bags each contain a different unknown object. What physical properties could you use to tell the objects apart?

Let’s Review

You could have included answers such as color, texture, mass, volume, density, shape, state of matter (solid, liquid, gas) etc.

Which state of matter do the particles move the fastest?

A.) Solid

B.) Liquid

C.) Gas

Let’s Review

In which state of matter are the particles most organized?

A.) Solid

B.) Liquid

C.) Gas

Let’s Review

What state of matter does NOT take the

shape of its container?

Let’s Review

You have a red box and a black box that are exactly the same size. The red box is heavier than the black one. What does this tell you about the physical properties of the boxes?

Let’s Review

Write your answer on your own, then confer with a partner

Check This Out:

States of Matter- Here you will find how particles are arranged in solids,

liquids, and gases.

Let’s Experiment

PROBLEM: When water and

cornstarch are combined, does it form a

liquid or a solid?

HYPOTHESIS: When water and

cornstarch are added, they will form a

_________________. (liquid, solid)

MATERIALS: *1 clear plastic cup

*1 craft stick

*1/4 cup corn starch

*food coloring (optional)

*1/8 cup water

*measuring cups

PROCEDURES: • Measure 1/4 cup (level) of corn

starch into the plastic cup. • Measure 1/8 cup (level) of water

into the paper cup. • Stir quickly until the mixture is

smooth. If mixture is still lumpy, add more water until it is smooth (Caution: you don’t want the mixture to be soupy!)