Form 1, 2, & 3 Chemistry: Free Trial*

G. 8 & 9

Chemistry

F. 1, 2, & 3

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G. 8 & 9 / F. 1, 2, & 3

Chemistry: Free Trial*

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1 / 10

1. Which of the following elements is the odd one out and why?

A. Helium because it is a very light element.

B. Krypton because it is used to kill superheroes.

C. Hydrogen because it is not a noble gas.

D. Neon because it is the only element that flashes on and off.

2 / 10

2. In the periodic table, what is a period?

A. The middle block

B. A vertical line

C. The left hand side

D. A horizontal row

3 / 10

3. The correct formula for carbon tetrachloride is ...

A. $C_{4}Cl$

B. $CCl_{3}$

C. $C_{3}Cl$

D. $CCl_{4}$

4 / 10

4. Which of the following pH numbers indicates a strong alkali?

A. 1

B. 9

C. 5

D. 14

5 / 10

5. The method used to separate coloured dyes in ink is ...

A. Chromatography

B. Evaporation

C. Distillation

D. Filtration

6 / 10

6. Which of the following is NOT a mixture?

A. Methane

B. Crude oil

C. Milk

D. Coca-cola

7 / 10

7. A pure substance has a melting point, which is always ...

A. The same

B. Higher than its freezing point

C. Lower than its boiling point

D. Different

8 / 10

8. Which is the most dense substance in this list?

A. Aluminium

B. Water

C. Oxygen

D. Lead

9 / 10

9. The formula for copper nitrate is $Cu(NO_{3})_{2}$. This means it contains:

A. 1 copper atom, 2 nitrogen atoms, and 6 oxygen atoms

B. 2 copper atoms, 2 nitrogen atoms, and 3 oxygen atoms

C. 2 copper atoms, 2 nitrogen atoms, 6 oxygen atoms

D. 1 copper atom, 1 nitrogen atom, and 6 oxygen atoms

10 / 10

10. Which of the following metals is the most reactive with acids?

A. Zinc

B. Magnesium

C. Aluminium

D. Iron

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