Physical Changes

TOPIC PHYSICAL AND CHEMICAL CHANGES

Objective  To

differentiate between physical and chemical changes

YOU ARE BE ABLE TO: 1. 2.

Explain differentiate between physical and chemical changes Mention examples of physical and chemical changes

Key Words Physical Change 2. Chemical Change 1.

Physical Change

What is a physical change? A physical change is a change in the size, shape, state, or appearance of matter.

Physical Change  Physical

changes occur when matter changes its property but not its chemical nature.  Physical property changes could include a change in: texture, shape, size, color, odor, volume, mass, weight, and density.

Chemical Change A

chemical change occurs when fireworks are used. Fireworks are made of metals such as magnesium and copper. These change chemically as they light up the

 Metal

rusting

What is a chemical change? A chemical change causes matter to become a new kind of matter.

Here are some examples of chemical changes:

campfire rusty car

You are now ready to play “Name That Change!”

physical

chemical

physical

physical

chemical

physical

TABEL 1

N o

Event

1 Iron melts 2 Break a bar of candle 3 Freezing 4 Boiling 5 Vaporizing 6 Sublimating 7 Condensing

Physyca Chemical l Changes Changes

N o

Event

8 Bicycle rusted 9 Candles burned 10 Eggs rotten 11 Mixing pea and 12 carrot Lighting upa 13 ciggarette Breaking Glass 14 Burning Paper 15 Melting Ice

Physyca Chemical l Changes Change s

CONCLUSION N o

Physical Change

1 No, New substance are formed

chemical Change New substance are formed