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*

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User NameEmailPhone NumberCountryCountry - Town/City

1 / 10

1. Ionic bonding usually occurs between what type of atoms?

A. Metal and non-metal

B. Non-metal and non-metal

C. Metal and noble gas

D. Metal and metal

2 / 10

2. The ionic bonds that exist between charged particles result in an arrangement that is called...

A. an ionic structure

B. a giant ion

C. a giant structure

D. a giant covalent structure

3 / 10

3. What is a reversible reaction?

A. A reaction that will not proceed in any direction

B. A reaction which will proceed in the backward direction only

C. A reaction which will proceed in both forward and backward directions

D. A reaction that will proceed in the forward direction only

4 / 10

4. A water molecule is covalently bonded. How many covalent bonds does it have?

A. 4

B. 1

C. 2

D. 3

5 / 10

5. In a titration I use 25 $cm^{3}$ of 0.20 $moldm^{-3}$ sodium hydroxide solution and find that it is neutralised by exactly 21 $cm^{3}$ of hydrochloric acid. What is the concentration of the hydrochloric acid solution?

$HCl + NaOH \longrightarrow NaCl + H_{2}O$

A. 0.24 $moldm^{-3}$

B. 9.5 $moldm^{-3}$

C. 0.19 $moldm^{-3}$

D. 0.00024 $moldm^{-3}$

6 / 10

6. I have 2 $dm^{3}$ of carbon dioxide gas at room temperature and pressure. How many moles do I have?

A. 12.0

B. 88.0

C. 0.083

D. 0.045

7 / 10

7. In the following reaction, if I fully react 4g of methane, what mass of water should I expect to make?

$CH_{4} + 2O_{2} \longrightarrow CO_{2} + 2H_{2}O$

A. 18 g

B. 4.5 g

C. 1 g

D. 9 g

8 / 10

8. $\Delta$H is negative for what type of reactions?

A. Displacement

B. Oxidation

C. Endothermic

D. Exothermic

9 / 10

9. $\Delta$H is positive for what type of reactions?

A. Oxidation

B. Displacement

C. Exothermic

D. Endothermic

10 / 10

10. What is the electronic configuration for an $Al^{3+}$ ion?

A. 2:8

B. 2:7

C. 2:8:8

D. 2:8:7

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