Chemistry Practice Problems Physical & Chemical Changes Practice Problems Solution: Select the best statement.A) Physical changes may ...

Solution: Select the best statement.A) Physical changes may be reversed by changing the temperature.B) Physical changes alter the composition of the substances involved.C) Physical properties are not valid characteristics for identifying a substance.D) Physical properties are mostly extensive in nature.E) Physical changes are usually accompanied by chemical changes.

Problem

Select the best statement.

A) Physical changes may be reversed by changing the temperature.

B) Physical changes alter the composition of the substances involved.

C) Physical properties are not valid characteristics for identifying a substance.

D) Physical properties are mostly extensive in nature.

E) Physical changes are usually accompanied by chemical changes.

Solution

We are asked to select which is the best statement about a physical change from multiple choices.


  • physical change is a type of change in which the form of matter is altered but one substance is not transformed into another. The size or shape of matter may be changed, but no chemical reaction occurs
  • Physical changes are usually reversible 


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