Across
- 2. A white solid made by heating limestone strong, e.g. in a lime kiln.
- 3. To break a chemical down by using heat.
- 6. Rain containing relatively high concentrations of acid-forming compounds.
- 9. The main compound found in limestone. It is a white solid whose formula is CaCO3.
- 11. A building material made by mixing cement, sand and aggregate (crushed rock) with water.
Down
- 1. The common name for calcium hydroxide solution.
- 2. A white solid made by reacting calcium oxide with water. It is used as a cheap alkali in industry.
- 4. A substance made as a result of a chemical reaction.
- 5. The chemical reaction of an acid with a base in which they cancel each other out, forming a salt and water. If the base is a carbonate or hydrogen carbonate, carbon dioxide is also produced in the reaction.
- 7. A rock that mainly consists of calcium carbonate, CaCO3.
- 8. A building material used to bind bricks together. It is made by mixing cement and sand with water.
- 9. A building material made by heating limestone and clay.
- 10. A substance we start with before a chemical reaction takes place.