Question

state 2 diffence between physical and chemical change​

Answer 1

Answer:

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Answer 2

Answer:

Physical change:

(1)The changes affecting the form of a chemical

substance, but not its chemical composition.

(2)a change of matter without changing the identity

of the substance.

(3) In other words. a change in state. a change in size,

shape, mass.

(4) Ex:Freezing: liquid to solid.

Melting: solid to liquid.

Condensation: gas to liquid.

Vaporization: liquid to gas.

Sublimation: solid to gas.

Deposition: gas to solid.

Chemical change:

(1) A chemical change happens when one chemical

substance is transformed into one or more different

substances.

(2) Chemical changes occur through the process of

chemical reactions.

(3) the resulting substances have different properties

because their atoms and molecules are arranged

differently.

(4) Ex:Burning of paper and log of wood.

Digestion of food.

Boiling an egg.

Chemical battery usage.

Electroplating a metal.

Baking a cake.