C2b - Construction Materials 0.0 / 5 ? ChemistryConstruction MaterialsGCSEOCR Created by: natalie27Created on: 16-12-13 11:40 27536814910 Across 1. A soft, sedimentary rock. (9) 4. Thermal decomposition of calcium carbonate. Calcium carbonate -> calcium _____ + carbon dioxide. (5) 5. Crushed rock and gravel. (9) 9. Limestone and marble are both made from _______ carbonate. (7) 10. Problems caused by mines and ________. Landscape is destroyed, more noise, more dust, more traffic. (8) Down 2. This is a hard, igneous rock. (7) 3. Made from sand, used to make windows, doors etc., (5) 6. This is made by mixing cement, sand, aggregate and water. (8) 7. __________ concrete - concrete with steel rods. Concrete = hard, steel = flexibility and strength. (10) 8. This is made by heating limestone and clay together. (6)
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