Chemistry Unit 1 Huge Crossword

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• 1. Heating limestone in a kiln with ____ forms cement (4)
• 2. Method of extracting copper using bacteria (11)
• 3. Gas that turns limewater cloudy/milky (6, 7)
• 5. Charge of a proton (8)
• 6. Name of Wegener's theory (11, 5)
• 7. Method of producing ethanol involving yeast (12)