5 Which of the following is NOT a state of matter mentioned in basic chemistry? A Solid B Liquid C Gas D Sound
6 A physical change is one in which: A New substance is formed B Mass is destroyed C No new substance is formed D Energy is released only
7 Which example shows a chemical change? A Ice melting B Water boiling C Iron rusting D Salt dissolving
9 Which example shows both physical and chemical change? A Melting ice B Breaking glass C Burning candle D Boiling water