Chemical changes

How can YOU tell if the change physical or chemical ?

Production of gas

Production of gas is when what ever you just nixed, makes bubbles. Though if you add heat, it doesn't count as a chemical change, it counts as you boiling a liquid.

Color change

When two or more liquids mix and make a different color.

A liquid to a solid

When two or more liquids mix to make a solid


When two liquids mix and change temperature without adding any heat.