Question

If there is 8 g of a substance before a physical change, how much will there be afterwards?

Answer 1

Answer:

Explanation: If there is 8 g of a substance before a physical change,

8g of substance will remain after the physical change(by law of conservation of mass.")

Answer 2

If there is 8 gram of a substance before a physical change then there will be 8 grams of substance after the change.

- According to the law of the conservation of the mass,the all-over mass present in our planet always stay constant. During the chemical or physical change the masses just change their forms but the total mass always stays intact.

- Similarly,if there is 8 grams of substance before a physical change then there will be 8 grams of substance after the change but in different form or state.