Grade 4 & 5 Chemistry: Free Trial*

G. 10 & 11

Chemistry

F. 4 & 5

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G. 10 & 11 / F. 4 & 5

Chemistry: Free Trial*

MCQs

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1 / 10

1. Choose the correctly balanced chemical equation from the list.

A. $NaBr + Cl_{2} \longrightarrow NaCl + Br_{2}$

B. $2NaBr + Cl_{2} \longrightarrow 2NaCl + Br_{2}$

C. $3NaBr + Cl_{2} \longrightarrow 3NaCl + Br_{2}$

D. $2NaBr + Cl_{2} \longrightarrow NaCl + Br_{2}$

2 / 10

2. A strong acid...

A. turns universal indicator paper green

B. is $100 \%$ ionised in water

C. ionised in water

D. has a high pH number

3 / 10

3. If a reversible reaction is exothermic in the forward direction, in the reverse direction it will be...

A. endothermic

B. exothermic

C. unknown - you cannot tell

D. slower

4 / 10

4. What type of bonding is present in metals?

A. Hydrogen

B. Covalent

C. Ionic

D. Metallic

5 / 10

5. Why do metals conduct electricity?

A. The negative electrons are free to move

B. All the constituent parts can move through the metal

C. The positive protons are free to move

D. The positive metal ions are free to move

6 / 10

6. Pick the correct statement about the arrangement of particles in a metal.

A. The particles are arranged randomly and close together

B. The particles are arranged regularly and far apart

C. The particles are arranged regularly and close together

D. The particles are arranged randomly and far apart

7 / 10

7. The atomic number of an element is 11 and its mass number is 23. Pick the correct combination of protons, neutrons, and electrons.

A. p=12, n=12, e=11

B. p=11, n=11, e=12

C. p=11, n=12, e=11

D. p=12, n=11, e=11

8 / 10

8. The mass number of an element tells us...

A. the number of neutrons plus electrons

B. the number of protons in the nucleus

C. the number of neutrons plus protons

D. the number of protons plus electrons

9 / 10

9. Energy change in a chemical reaction is represented by the symbol...

A. H

B. $\Delta$T

C. $\Delta$H

D. $\Delta$E

10 / 10

10. When ammonium nitrate is added to water, an endothermic reaction occurs and...

A. the temperature rises

B. nothing changes

C. the temperature of the reaction mixture falls

D. heat is given out

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