Name the following.

1. The element whose symbol is S.
2. The element whose symbol is Cl
3. An element whose symbol is W
4. The element whose symbol is C
5. Number of elements found so far in the nature

Write T for True and F for False.

1. The symbol of an element represents one molecule of that element.
2. The symbol of phosphorus has been derived from its Latin name.
3. The chemical symbol of gold is Au, derived from its Latin name - Aurum.
4. Atoms of an element cannot form molecule of that element.
5. An element is not a pure substance.

Classify the following as elements or compounds.

Classify the following chemical formulas as element or compound.

Classify each of the following as homogeneous mixture, heterogeneous mixture, alloy, solution, suspension or emulsion.