Physical & Chemical

Aimi Taniguchi 6th Priod

Physical property

Definition

A characteristic of a substance that can be observed without changing the substance into something else.

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Examples

*Melting point of ice is 0°C.

*Boiling point of water is 100°C.

*Water is transparency.

Chemical property

Definition

A characteristic that is observed when a substance interacts with another substance.

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Examples

*A bicycle get rust.

*A silver spoon tarnishes.

*Statue of Liberty tarnished by acid rain.

Physical change

Definition

A change in matter that does not affect its chemical composition.

Pictures

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Examples

*Rip the paper to small pieces.

*Soild water > Liquid water > Gas water

*Icecream melt.

Chemical change

Definition

A chemical reaction ; a process that changes substances into new substances (related word : Chemical reaction )

Five indicators

1. Color changes

2. Gas produced

3. Temperature changes

4. New substance formed

5. Order released

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Examples

*Burn the wood > turns to ashes.

*Burn a paper > turns to ashes.

*Baking a cake.

Video

Incredible Chemical Reaction!

Thank you!

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