Question

E .Rewrite the following by inserting appropriate word/words. ​

Answer 1

Answer:

1.a decomposition reaction decomposes a single compound into the substances constituting the compound.

2. a symbol represents one atom of an element.

3. when magnesium is placed in contact with oxygen it formed magnesium oxide.

4. this is correct.

5.in reactivity series potassium is the most reactive element.