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Java Games: Flashcards, matching, concentration, and word search. |
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Air
Chapter 27, Breakthrough Science
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| What does air contain? | oxygen(21%), carbon dioxide(0.03%), water vapour, nitrogen(78%), argon(1%) |
| How is gas liquified? | By cooling and compressing |
| What is a catalyst? | Something that speeds up a chemical reaction |
| What are enzymes? | Biological catalysts. |
| What are oxides? | Compounds of oxygen and other elements. |
| What happens when things burn in air? | oxygen is consumed |
| How are liquid oxygen and nitrogen formed? | fractional distillation |
| How is oxygen prepared? | By dropping hydrogen peroxide on magnesium dioxide (catalyst) |
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Mitchell District High School |
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