chemistry
Across
- 3. smallest particle of an element that can take part in a chemical reaction
- 4. the number of atoms present in a molecule of an element
- 6. the valency of sulphur is
- 7. always made up of elements combined in a certain ratio that always remains the same
Down
- 1. K is the symbol of
- 2. made by mixing two or more elements or compound in any ratio
- 5. smallest particle of an element or a compound that can normally exist independently