Answer:

Unknown material: classifcation:

1. Diamond 1. Pure substance

2. liquid 2. mixture

3. salad 3. mixture

4. gold 4. pure substances

5. alcohol 5. mixture

Basis of classification:

1. Diamond is heavy and hard

2. Liquid is mixture beacause it has a chemical things

3. Salad is mixture beacause they mix the fruit thing like orange, banana, mayonaise and more

4. Gold is pure gold beacause its hard and heavy

5. Alcohol is mixture beacause its has a chemical.

Explanation:

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