Grade 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 these word equations is INCORRECT?

A. Iron $+$ chlorine $\longrightarrow$ iron chloride

B. Copper $+$ oxygen $\longrightarrow$ copper oxide

C. Magnesium $+$ oxygen $\longrightarrow$ magnesium oxide

D. Hydrogen $+$ chlorine $\longrightarrow$ hydrogen chlorine

2 / 10

2. The smallest particle of carbon dioxide $CO_{2}$ is called ...

A. a molecule

B. a proton

C. an ion

D. an atom

3 / 10

3. Which of these is NOT a compound?

A. Chlorine

B. Propane

C. Carbon monoxide

D. Hydrochloric acid

4 / 10

4. The name given to the liquid which dissolves the solid in a solution is ...

A. Distillate

B. Soluble

C. Solvent

D. Saturated

5 / 10

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

A. Chromatography

B. Distillation

C. Evaporation

D. Filtration

6 / 10

6. Which of the following is NOT a mixture?

A. Coca-cola

B. Milk

C. Crude oil

D. Methane

7 / 10

7. The formula for potassium nitrate is $KNO_{3}$. This means it contains:

A. 1 potassium atom, 3 nitrogen atoms, and 3 oxygen atoms

B. 1 potassium atom, 1 nitrogen atom, and 3 oxygen atoms

C. 3 potassium atoms, 3 nitrogen atoms, and 3 oxygen atoms

D. 3 potassium atoms, 3 nitrogen atoms, and 9 oxygen atoms

8 / 10

8. When a gas changes to a liquid, it ...

A. Boils

B. Sublimes

C. Melts

D. Condenses

9 / 10

9. What colour is a universal indicator in strong acid?

A. Purple

B. Red

C. Green

D. Orange

10 / 10

10. Which of the following acids do we have in our stomach?

A. Nitric acid

B. Sulphuric acid

C. Hydrochloric acid

D. Ethanoic acid

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