L4 CHEMICAL CHANGES

A chemical property is a characteristic of matter that can be observed at it changes to a different type of matter.

A chemical change is a change in matter in which the substances that make uo the matter change into  other substances (with new physical and chemical properties)
Some signs of chemical change are the formation of bubbles, color change, odor change and energy change.
Concentration is the amount of substance in a c certain volume.