Question

I. Complete the following statements:
1. Decomposition of Ammonium dichromate giveS _______ a dark green solid.
2. On heating Hydrated copper sulphate changes its colour from ________ to _______ .
3. The sublimable solid Ammonium chloride gives ______ gas and ________ gas on heating.
I. Write true(T) of False(F):
i) A molecular formula represents an element.
ii) Berzelius was the first person to represent the elements by symbols.

Answer 1

Answer:

1. chromium (III) Oxide

2.blue to white

3. ammonia and hydrogen chloride

4. false atomic formula represents an element and molecular formula represents the elements used in formation of any chemical species.

5. false it was John Dalton who used symbols to represent elements