Question

True or false: Chemical and physical changes alter matter?

Answer 1

false

Step-by-step explanation:

A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.

Answer 2

False

Step-by-step explanation:

Chemical changes do change the composition of the substance. However, physical changes do not; physical changes simply alter the physical form of the substance.

For example, a melting ice cube is undergoing a physical change, but its overall composition of H2O isn't changing. It's just changing from a solid form to a liquid form.

Hope this helps!