Gud_mrng_mates!!
Please answer the following questions (long):-
1-a). what is the significance of the symbol of an element? explain with the help of an example.

b). explain the significance of symbol H.
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2-a). how to atoms usually exist?
b). what is the molecule? explain with an example.
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3-a). Give the significance of the formula of a substance.
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4-a). copper sulphate reacts with Sodium Hydroxide to form a blue precipitate of copper hydroxide and sodium sulphate. In an experiment 15.95 gram of copper sulphate with 8.0 gram of sodium hydroxide to form 9.75 gram of copper hydroxide and 14.2 gram of sodium sulphate. which law of chemical combination is illustrated by this data? give reason for your choice.
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5-a). the atomicity of ozone, sulphur, Phosphorus and argon are respectively:
i. 8,3,4,1
ii. 1,3,4,8
iii. 4,1,8,3
iv.3,8,4,1