Across
- 4. colour of flame test for potassium.
- 8. the state of matter of Bromine
- 10. the type of polymerisation present in the production of poly(ethene)
- 11. a reaction in which thermal energy is absorbed from the surroundings
- 13. the most reactive Halogen
- 15. the name of the process used to make ammonia
Down
- 1. a reaction between an acid and a base
- 2. formula showing the lowest whole number ratio of atoms in a molecule
- 3. the negatively charged particle in an atom
- 5. atoms of same element with a different number of neutrons
- 6. Group 1 the —————— metals
- 7. precipitate colour produced when a chloride reacts with acidified silver nitrate
- 9. when a solid is formed in a solution
- 12. colour change of Bromine water when in the presence of a carbon to carbon double bond
- 14. the type of molecule made by reacting an alcohol and a carboxylic acid