Soaking is not a chemical change, unless contact with water results in a chemical reaction - such as adding sodium to water.
Physically or chemically.
Ash and smoke.
Dalton
No, a stone soaking in water is a physical change, not a chemical change. The stone remains the same chemically, but its physical state is altered due to the water absorption.
starches
The chemical composition was changed during frying.
they disolve :)
it may be a catalyst, a spectator ion a solvent.
Chemically changed and can be physically separated into different species.
its a type of penicillin that is pure and has never been chemically changed
These substances are called catalysts.
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