Answer:
Explanation:
what causes change?
matchstick - heat/ burning it
sugar - heating
ice - heating
what is produced?
ashes, tiny pieces like black dust
melted sugar
water
what changes?
matchstick turns black like a burnt wood or coal
sugar turns from solid to a sticky liquid and it darkens in color from white it turns to dark brown
ice melts in turn into plain water, from solid to liquid form
original form?
matchstick - no
sugar - no
ice- yes , if you put in the freezer.
