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CHEMISTRY FROM 1

Chapter 2: Action of heat on a substance

Differences between a physical and a chemical change

Physical change

Chemical change

It is easily reversible

Not easily reversible

No new substances is formed

New substances I formed

The heat change is small

The heat change is large

No permanent change

Permanent change

There is no change in mass of a substance

Change in mass of the substance

The chemical properties are the same as before

The chemical change is different

 

par Claude Foumtum