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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) |