How does matter change when

energy is added or removed?

Unit E:Lesson 1

A fast review.

Matter

Everything around us that has:

Mass Volumeand

ExampleTable, chair, board, water , juice, air, bottle, pencil case.

Mass

Is the amount of matter in an object.

Tool for measuring mass.

Digital balance

Two pan balance

Units for measuring mass.

Gram (g)

Kilogram (Kg)

Metric

syste

m

Volume

Amount of space an object takes.

Tool for measuring volume.

(For liquids)

Graduated cylinder

Units for measuring volume.

Milliliter (ml)

Liter (L)

Metric

syste

m

Are the following matter?1) Sunlight

2) An idea (you think of)

3) Water vapor

4) Balloon

5) Beaker

6) Oxygen

7) Aluminum foil

States of matter

Solid Liquid

Examples:TableChairBoardBottlePencil caseIpad

Gas

Examples:WaterMilkPepsiJuiceVinegarLiquid soap

Examples:SmokeOxygenHeliumHydrogenNitrogenWater vapor (Steam)

Mass Volume

and

are called

Physical properties

(Something you can observe or measure)

States of matterGas Liquid Solid Properties

Far apart Close to each other

Very close to each other

Arrangement of Particles

Very weak

Weak Strong Attraction forces

Indefinite Indefinite Definite Shape

Indefinite Definite Definite Volume

Change of state

Occurs when a substance changes from one state to another.

HOW can we change states of matter?

Heat

Melt

Ice (solid) Water (liquid)

Melting(Change of solid to liquid by heating)

What happens to the solid particles during the process of melting?

Gaining heat

More energy

LiquidSolid

Melting point(The temperature at which a

substance melts)

Liquid Melting point

Water Above 0°c

Heat

Evapourate

Water (liquid) Water vapour (Gas)

Evapouration(Change of liquid to gas by heating)

What happens to the liquid particles during the

process of evapouration?

Gaining heat

More energy

Liquid Gas

Boiling point(The temperature at which a

substance boils)

Liquid Boiling point

Water 100°c

Cool

Condenses

Water (liquid)Water vapour (Gas)

Condensation(Change of gas to liquid by cooling)

What happens to the gas particles during the

process of condensation?

Lose heat

Less energy

LiquidGas

Cool

Freeze

Water (liquid)

Freezing(Change of liquid to solid by cooling)

Ice (solid)

What happens to the gas particles during the process of freezing?

Lose heat

Less energy

Liquid Solid

Freezing point(The temperature at which a

substance freezes)

Liquid Freezing point

Water 0°c

Heat

Heat

Carbon ice (Solid)

Sublimation(Change of solid to gas by heating)

Co2 (Gas)