Question

a chemical change is different from a physical change because in a chemical change
the change can be seen but in a physical change it cannot be seen
the molecules do not physically touch
a new substance is formed and in a physical change a new substance is not formed
chemical products are used

Explanation:

A chemical change involves the formation of a new substance through a chemical reaction. In contrast, a physical change does not result in the formation of a new substance. For example, melting ice (physical change) just changes the state of water from solid to liquid, while burning wood (chemical change) produces ash, smoke, and gases - new substances.

Answer:

A chemical change is different from a physical change because in a chemical change a new substance is formed and in a physical change a new substance is not formed.