Question

ANSWER THESE QUESTIONS ​

Answer 1

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Answer 2

Answer:

1. change is formation of something new from something old
2. in physical change no new substance is formed but in chemical change a new substance is formed which have properties different from that of reactance.
3. breaking of Glass tumbler is a physical change because each piece of break glass is is still a glass and not any other material and all the pieces of Glass will show so the same property of glass
4. when magnesium ribbon is burnt in air then magnesium reacts with atmospheric oxygen to form magnesium oxide black powder
5. when baking soda and vinegar reacts salt water and carbon dioxide gas is produced because vinegar is acidic in nature and baking soda is basic in nature
6. fe + o2 = fe2o3