Acids, bases and salts

Acids, bases and salts

Assessment

Assessment

Created by

Richard Fisher

Chemistry

9th - 10th Grade

1K plays

Hard

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10 questions

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1.

Multiple Choice

10 sec

1 pt

Complete the definition below:

Acids are....

hydrogen donors.

hydrogen acceptors.

proton donors.

proton acceptors.

2.

Multiple Choice

20 sec

1 pt

A substance has a pH value of 8. It is most likely to be what?

Strong acid

Weak acid

Strong base

Weak base

3.

Multiple Choice

20 sec

1 pt

Which indicator is colourless in acid and pink in alkali?

Litmus

Phenolphthalein

Universal Indicator

Methyl Orange

4.

Multiple Choice

30 sec

1 pt

Which is the correct sequence of steps to make a pure sample of a soluble salt?

Add excess acid to base, filter acid, evaporate half of solution, leave to crystallise, remove crystals and dry them with filter paper.

Mix two soluble solutions and filter off the insoluble salt. Dry the salt.

Add excess base to acid, filter excess base, evaporate half of solution, leave to crystallise, remove crystals and dry them with filter paper.

Add UI to acid and add base until UI turns green. Evaporate half of solution, leave to crystallise, remove crystals and dry them with filter paper.

5.

Multiple Choice

20 sec

1 pt

Complete this equation:

sulfuric acid + potassium hydroxide -->

potassium oxide + hydrogen

potassium chloride + water

potassium sulfate + hydrogen

potassium sulfate + water

6.

Multiple Choice

5 sec

1 pt

What acid is needed to make copper nitrate?

Hydrochloric

Nitric

Sulfuric

Phosphoric

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