Question

1) Magnesium when burnt in air, forms a new substance called? a) iron oxide
b) ashuu
c) Magnesium oxide

2) A chemical change may be accompanied by
d) Emitting of heat and light
b) Tearing up of substance
c) no change in physical properties
5 Rusting is an?
a) Unwanted change
b) Physical change
c) Desirable change
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Answer 1

Answer:

1.c)Magnesium oxide

2.b)tearing up of substance

5.a)unwanted change

Explanation:

I hope that it would be helpful.

Answer 2

1-option c Magnesium oxide