A. Physical and chemical changes chemical properties: how one substance reacts with another gasoline + oxygen produces carbon dioxide and water and energy physical properties: same chemical, different form boiling, melting are physical changes B. Energy potential energy kinetic energy (energy of motion) light energy heat energy mechanical energy C. States of Matter: Solids, Liquids, Gases Solids have definate shapes and volumes.
(one substance; reacts; with another gasoline + oxygen) (Gases Solids; have; definate shapes and volumes)
one substance Gases Solids
reacts have
with another gasoline + oxygen
definate shapes and volumes