Form 3 Science Test Test 4: Acids and basis Total: 50 ... - Pearson
Form 3 Science Test Test 4: Acids and basis Total: 50 ... - Pearson
Form 3 Science Test Test 4: Acids and basis Total: 50 ... - Pearson
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8. Which of the following statements is true<br />
A<br />
B<br />
C<br />
D<br />
Water that contains dissolved calcium or magnesium salts is hard.<br />
Hard water is water that forms a scum when we try to make soap lather.<br />
The scum is formed by a chemical reaction between the calcium salt in<br />
the water <strong>and</strong> the soap.<br />
All of the above.<br />
9. Which metal is contained in a torch battery<br />
A<br />
B<br />
C<br />
D<br />
Copper<br />
Carbon<br />
Zinc<br />
Silver<br />
10. Calcium chloride is a:<br />
A<br />
B<br />
C<br />
D<br />
Salt<br />
Metal<br />
Solute<br />
Substrate<br />
[10]<br />
3/6<br />
<strong>Science</strong> <strong>Test</strong> 4<br />
© <strong>Pearson</strong> Botswana. Permission is given to photocopy these pages for school use.
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