Acids, Bases, Salts

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​ Acids have a ​

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taste.​

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sour

bitter

sweet

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​ Alkalis ​ have a ​​

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taste.​

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bitter

sweet

sour

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​ Alkalis ​turn

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litmus paper ​

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.

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blue

sweet

sour

red

Drag and Drop

​ Acids ​turn ​

Placeholder

litmus paper ​ ​

Placeholder

.

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blue

sweet

sour

red

Multiple Choice

Both acids and alkalis are corrosive.

• True

• False

Multiple Select

Which is an example of an alkali?

• sodium hydroxide

• ammonia

• sulphuric acid

• hydrochloric acid

Multiple Choice

Which is an example of an acid?

• vinegar

• soap

• detergent

• fertiliser

Multiple Choice

Acids have a soapy feel.

• True

• False

Dropdown

The reaction between acids and alkalis is __

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Dropdown

Apples turn brown after a while. That is known as

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.