Question

5.
The chemical formula ul qui
CaCO,
Cao
CaCl,
Ca(OH)2
D. Answer the following questions in brief.
1.
What are elements?
2.
Give the chemical symbol of iron and chlorine.
Write the chemical formulae of the following compounds:
3.
(a) Aluminium oxide
(b) Zinc acetate
4.
Balance the following equation:
5.
Ca(OH)2 + HCl —+CaCl2 + H2O
What does a chemical equation represent?
What are reactants and products in a chemical equation?
Give one example of a combination reaction.
6.
44​

Answer 1

Explanation:

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