1) A change where no new substances are formed is called a chemical change. a) True b) False 2) Chemical changes are always irreversible. a) True b) False 3) Curdling of milk is a __________ change. a) Chemical Change b) Physical Change 4) Mixing sugar in water is a physical change. a) False b) True 5) Is burning of a candle similar to melting of a candle a) Yes b) No 6) The changes in which the original substance remains the same but in a new form is a _____________ change. a) Chemical change b) Physical Change 7) Burning of a tree is a ___________ change. a) Physical Change b) Chemical Change 8) Explosion of a cracker is a ______________ change. a) Physical change b) Chemical Change 9) Heating water is a ____________ change. a) Physical Change b) Chemical Change 10) Tearing or crushing a paper is a physical change. a) True b) False

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