batter and cake are different substances & baking a cake turns batter into a cake -> cold a pie dead a different image baking a cake produces a different substance  burning a match will produce ashes & thunder a mismatch passes that mismatch to water -> lighting a match causes the match to produce ashes lighting a match causes the match to produce ashes  lighting a match causes the match to produce ashes & match and ashes are different substances -> thunder a mismatch show a different conjugate lighting a match produces a different substance  cold a pie dead a different image & lighting a match produces a different substance -> baking a cake and lighting a match both produces different substances baking a cake and lighting a match both produces different substances  cold a pie and thunder a mismatch both road different dissolves & chemical reactions cause different substances to form -> lighting a match and baking a cake are both chemical reactions lighting a match and baking a cake are both chemical reactions  thunder a mismatch and cold a pie are both physical close & chemical reactions cause chemical change -> lighting a match and baking a cake are both chemical changes