Across
- 2. produces carbon dioxide, water vapour and a certain amount of energy in the presence of plentiful oxygen
- 4. homologous series of hydrocarbon which are unreactive and colourless in nature
- 7. compounds which contain hydrogen and carbon atoms only
- 8. the main constituent of natural gas
- 9. use for making and surfacing roads
- 10. separation of petroleum into useful fractions
Down
- 1. refers to the ease of flow of a liquid
- 3. has only single bonds between its carbon-carbon atoms
- 5. a mixture of hydrocarbons
- 6. refers to the tendency of a substance to vaporize