give one activity of a physical change and one avtivity of chemical change to prove the law of conservation of mass
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1. take a ice cube weigh it and leave it for melting in a container, after melting find the weight of the water which should be equal to that of ice.
2. take dil. chemical and a dil. base weigh them and add their weight. Now mix acid and base to get salt, now weigh the salt. It's weight would be equal to that of addition of separate acid and base.
2. take dil. chemical and a dil. base weigh them and add their weight. Now mix acid and base to get salt, now weigh the salt. It's weight would be equal to that of addition of separate acid and base.
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