Across
- 3. Au is the symbol of ______
- 4. ________ are pure substances
- 6. Ozone, Sulphur contains more atoms, so they are _____
- 7. Valency of iodine is ____
Down
- 1. Name of silver in Latin
- 2. ___ molecule consists of hydrogen and oxygen
- 5. _____ can be separated by physical means.
- 6. Positively charged particles