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Quiz on IGCSE Chemistry Mock Revision, created by julia.s.mulroone on 03/20/2015.

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IGCSE Chemistry Mock Revision

IGCSE Chemistry Mock Revision

Question 1 of 20

1

Which of these compounds is covalently bonded?

Select one of the following:

  • Iron oxide

  • Magnesium sulphate

  • Carbon dioxide

  • Sodium chloride

Explanation

Question 2 of 20

1

Which are properties of metals?

Select one or more of the following:

  • High melting and boiling points

  • Often gas at room temperature

  • Brittle; easy to break

  • Hard and shiny

  • Dense

  • Sonorous

  • Often highly reactive

  • Poor conductors

  • Good conductors

  • Malleable and ductile

Explanation

Question 3 of 20

1

Nitrate (NO3) has a valency of 1.

Select one of the following:

  • True
  • False

Explanation

Question 4 of 20

1

When phenolphthalein comes into contact with an acid, it goes bright pink/purple.

Select one of the following:

  • True
  • False

Explanation

Question 5 of 20

1

Which of the following increases rate of reaction?

Select one or more of the following:

  • Increasing temperature

  • Adding a catalyst

  • Decreasing concentration

  • Increasing surface area

  • Adding a barbiturate

Explanation

Question 6 of 20

1

Reactivity increases as you go down the Group 1 metals.

Select one of the following:

  • True
  • False

Explanation

Question 7 of 20

1

Which of these salts are insoluble?

Select one or more of the following:

  • Potassium nitrate

  • Barium sulphate

  • Silver bromide

  • Sodium carbonate

  • Calcium carbonate

Explanation

Question 8 of 20

1

Find the chemical equation for:
Hydrogen peroxide -> water + oxygen

Select one of the following:

  • H2O2 -> 2H2O + O2

  • H2O2 -> H2O + O

  • 2H2O2 -> 2H2O + O2

  • H2O2 -> H2O + O2

Explanation

Question 9 of 20

1

Why is a polystyrene cup used in the experiment to find a temperature change?

Select one of the following:

  • Because it is safer.

  • Because it is an insulator.

  • Because it is cheaper.

  • Because it is light.

Explanation

Question 10 of 20

1

Which of these are halogens?

Select one or more of the following:

  • Oxygen

  • Potassium

  • Chlorine

  • Fluorine

  • Helium

  • Iodine

  • Copper

  • Bromine

Explanation

Question 11 of 20

1

Halogens exist as monatomic molecules.

Select one of the following:

  • True
  • False

Explanation

Question 12 of 20

1

Which of the following compounds are ionically bonded?

Select one or more of the following:

  • Potassium chloride

  • Sulphur dioxide

  • Copper nitrate

  • Magnesium oxide

  • Hydrogen bromide

Explanation

Question 13 of 20

1

The ∆H for an exothermic reaction is a negative value.

Select one of the following:

  • True
  • False

Explanation

Question 14 of 20

1

Which of these would you observe in the reaction between sodium and water?

Select one or more of the following:

  • Shoots around surface of the water

  • Hissing sound

  • Burns with a lilac flame

  • Effervescence/fizzing

  • Never disappears

  • Melts into a shiny ball

Explanation

Question 15 of 20

1

The noble gases are unreactive because they are too large and have very weak electrostatic forces.

Select one of the following:

  • True
  • False

Explanation

Question 16 of 20

1

What is the test for carbon dioxide?

Select one of the following:

  • Burns with a squeaky pop

  • Turns limewater milky

  • Relights a glowing splint

  • Bleaches paper

Explanation

Question 17 of 20

1

Which gas relights a glowing splint?

Select one of the following:

  • Carbon dioxide

  • Ammonia

  • Hydrogen

  • Oxygen

Explanation

Question 18 of 20

1

In the reaction between potassium chloride and iodine, iodine displaces chloride to form potassium iodide.

Select one of the following:

  • True
  • False

Explanation

Question 19 of 20

1

Which are properties of the halogens?

Select one or more of the following:

  • Good conductors

  • Highly reactive

  • Alkaline

  • Poisonous

  • Bleaches

  • Metals

  • Form diatomic molecules

  • Painkillers

  • Form coloured gases

Explanation

Question 20 of 20

1

Why does increasing temperature increase rate of reaction?

Select one of the following:

  • Higher quantity of particles, so there are more frequent collisions.

  • More kinetic energy, so particles collide more often and more frequently.

  • Lowers the activation energy required for reactions.

Explanation

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