define chemical reaction and physical reaction
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hey!!
In a chemical reaction, there is a change in the composition of the substances..
Ina physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition.
hope this helps you ☺☺
In a chemical reaction, there is a change in the composition of the substances..
Ina physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition.
hope this helps you ☺☺
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1
"A physical change in a substance does not change what the substance is.In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed."
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