9C2L1 Chemical and physical changes

Front

When a match is burnt, this is an example of a change

Back

chemical

Front

When salt is dissolved in water, salt solution is produced. This is an example of a [?] change.

Back

physical

Front

How can you tell that this is a physical change? Options: The salt can easily be separated from the water, It cooled down when the salt was dissolving, The salt changed colour, It made a sound

Back

The salt can easily be separated from the water

Front

Dry ice is solid carbon dioxide. When left at room temperature it turns into carbon dioxide gas. What type of change is this?

Back

Physical

Front

What is the evidence that dry ice turning into carbon dioxide gas is a physical change?

Back

It is reversible

Front

What type of change occurs when iron is exposed to damp conditions and rust (iron oxide) forms?

Back

Chemical

Front

How confident do you feel about this material?

Back

undefined