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Acids and Alkalis 1

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Across
2.A soluble base i.e. a base that will dissolve in water.
3.A solution that has a small number of solute particles per unit volume (litre or cubic metre).
9.In this type of reaction, an acid cancels out a base or a base cancels out an acid.
10.A solution that is neither alkaline nor acidic. Its pH is 7.
11.A compound in which the hydrogen atoms of an acid are replaced by atoms of a metal element.
12.A solution with a pH value less than 7.
13.A substance that changes colour to show whether a solution is acidic or alkaline.
Down
1.An indicator that changes colour to show the pH of a solution. It is a mixture of dyes. (2 Words)
4.A solution that has a large number of solute particles per unit volume (litre or cubic metre).
5.This scale shows whether a substance is acidic, alkaline, or neutral. (2 Words)
6.A substance that can burn your skin or eyes.
7.An indicator. Blue .... paper goes red on adding acid. Red .... paper goes blue on adding alkali.
8.A substance that neutralises an acid.

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