In the reaction, c3h8 (g) + 502 (g) – 3co2 (g) + 4h2o (g), all of the reactants and
products are in what phase?
o
solid
o
liquid
o
gas
aqueous

Which of these are physical changes in matter? check all that apply boiling water a pencil being sharpened exploding dynamite freezing water rotting cheese