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6.1.2
Acids and alkalis
| Question | Answer |
|---|---|
| What are acids? | an acid is a solution with a pH value less than 7 |
| What are alkalis? | an alkali is a soluble base |
| What does corrosive mean? | a substance is corrosive if it can burn your skin or eyes |
| What is an irritant? | a substance that makes your skin itch or swell up a little |
| What does concentrated mean? | a solution is concentrated if it has a large number of solute particles per unit volume (litre or cubic metre) |
| What does dilute mean? | a solution is dilute if it has a small number of solute particles per unit volume (litre or cubic metre) |