States of Matter Review

Quiz

States of MatterSolids, liquids and gases are the three states of

matter. All matter is made from small particles.

These particles are called atoms and molecules.

Solids

Solids have a definite shape and volume.

The particles of a solid are arranged in a tight, regular pattern, and move very little.

Particles are so close to one another that they only vibrate.

Types of SolidsAmorphous Crystalline

NOT arranged in a particular pattern

DOES NOT melt at specific temperatures. It just becomes softer and changes into other substances.

Examples: plastics, rubber, glass

Solids that are made of crystals

Regular, repeating patternMelts at a specific

temperature

Examples: salt, sugar, snow

Brain Break

LiquidsLiquids take on the shape of the

container they are in– no definite

shape.

Liquids have a definite volume

Particles of a liquid move freely

around one another

Fluid: “a substance that flows”

Brain Break

Properties of LiquidsSurface tension: result of an inward pull

among the molecules of a liquid that brings the molecules on the surface closer together

Properties of LiquidsViscosity: a liquid’s resistance to flow

HIGH viscosity: flows slowly

LOW viscosity: flows quickly

Your turn!

Low viscosity High viscosity

GasMolecules are widely separated,

move around freely, and move at high speeds.

Gases do not have a definite shape

Gases also do not have a definite volume because they can be compressed (squashed into a smaller volume).

Question 1How many states of matter are there?

One Two Three

Question 2 Atoms in a liquid are not farther apart than the

atoms in a gas.

TrueFalse

Carefully read the question!

Question 3Which has the least energetic molecules?

Solid Liquid Gas

CORRECT

There are three different states of matter:

solid, liquid, and gas.

Correct Again!!

Atoms in a gas are actually farther apart than the

atoms in a liquid.

Gases are the least dense and have atoms that are

the most spread out.

Geeze, you are extremely smart!!Solids have the least energetic molecules.

You are Finished! Good Job!