Question

1. What are elements?

2. Give the chemical symbol of iron and chlorine.

3. Write the chemical formulae of the following compounds:
(a) Aluminium oxide
(b) Zinc acetate

4. Balance the following equation:
Ca(OH), + HCl CaCl, + H,O

5. What does a chemical equation represent?

6. What are reactants and products in a chemical equation?

7. Give one example of a combination reaction.​

Answer 1

All elements are here

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