| Front | distillation |
| Back | way of purifying liquids contaminated with soluble solids dissolved in them1. Heat the solution2. Solvent boils and turns into a vapor3. Solids left behind4. Solvent condensed back to the pure liquid and is collected |
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| Front | What is the relative mass of an electron? |
| Back | about 1/2000 |
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| Front | alloy |
| Back | formed when a metal is mixed with other elementsex:brass = copper and zincbronze = copper and tinsteel = iron and small amounts of carbonsolder = tin and lead |
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