Across
- 4. Chemicals that take part in a reaction
- 7. Chemiclas produced in a chemical reaction
- 9. A substance that releases hydrogen ions into an aqeous solution
- 10. A reaction of a base and acid resulting in a salt and water
- 14. An endothermic reaction that takes place in green plants, uses energy from sunlight to combine carbon dioxide and water to produce glucose and oxygen
- 15. A chemical that changes colour to show wheather a substance is acidic, neutral or basic
- 19. A biological catalyst that speeds up a reaction
Down
- 1. A common indicator that turns red in the presence of an acid and blue in the presence of a base
- 2. A green chemical in the chloroplast of green plants
- 3. A term used to describe materials that store arbon in thei stucture
- 5. A base that dissolves in water
- 6. The term commonly used for sodium chloride, but covers any compound formed by a metal taking the place of a hydrogen atom in an acid
- 7. A scale used to measure the concentration of H+ ions in a solution
- 8. A soltion made of a base/alkali and water
- 11. A chemical reaction in which glucose is broken down, releasing energy for use by the plant or animal
- 12. A simple sugar formed by photosynthesis used in respiration
- 13. Process in which chemicals move, caused by different concentrations of metals
- 16. single celled organisms that live in water
- 17. Rain that has acid such as nitric and sulfuric acid dissolved in it
- 18. A substance that releases OH- ions