9.1 Define physical and chemicalchanged

1.	9.1 Define physical and chemicalchanged
Answer» ANSWER: PHYSICAL change - physical changes are the changes affecting the form of CHEMICAL substance,but not chemical composition. chemical change - chemical change occures when a substance COMBINES with another to form a NEW substance.

Answer»

PHYSICAL change - physical changes are the changes affecting the form of CHEMICAL substance,but not chemical composition.

chemical change - chemical change occures when a substance COMBINES with another to form a NEW substance.

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