IGCSE Chemistry Mock Revision

julia.s.mulroone
Quiz by , created over 4 years ago

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

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julia.s.mulroone
Created by julia.s.mulroone over 4 years ago
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Question 1

Question
Which of these compounds is covalently bonded?
Answer
  • Iron oxide
  • Magnesium sulphate
  • Carbon dioxide
  • Sodium chloride

Question 2

Question
Which are properties of metals?
Answer
  • 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

Question 3

Question
Nitrate (NO3) has a valency of 1.
Answer
  • True
  • False

Question 4

Question
When phenolphthalein comes into contact with an acid, it goes bright pink/purple.
Answer
  • True
  • False

Question 5

Question
Which of the following increases rate of reaction?
Answer
  • Increasing temperature
  • Adding a catalyst
  • Decreasing concentration
  • Increasing surface area
  • Adding a barbiturate

Question 6

Question
Reactivity increases as you go down the Group 1 metals.
Answer
  • True
  • False

Question 7

Question
Which of these salts are insoluble?
Answer
  • Potassium nitrate
  • Barium sulphate
  • Silver bromide
  • Sodium carbonate
  • Calcium carbonate

Question 8

Question
Find the chemical equation for: Hydrogen peroxide -> water + oxygen
Answer
  • H2O2 -> 2H2O + O2
  • H2O2 -> H2O + O
  • 2H2O2 -> 2H2O + O2
  • H2O2 -> H2O + O2

Question 9

Question
Why is a polystyrene cup used in the experiment to find a temperature change?
Answer
  • Because it is safer.
  • Because it is an insulator.
  • Because it is cheaper.
  • Because it is light.

Question 10

Question
Which of these are halogens?
Answer
  • Oxygen
  • Potassium
  • Chlorine
  • Fluorine
  • Helium
  • Iodine
  • Copper
  • Bromine

Question 11

Question
Halogens exist as monatomic molecules.
Answer
  • True
  • False

Question 12

Question
Which of the following compounds are ionically bonded?
Answer
  • Potassium chloride
  • Sulphur dioxide
  • Copper nitrate
  • Magnesium oxide
  • Hydrogen bromide

Question 13

Question
The ∆H for an exothermic reaction is a negative value.
Answer
  • True
  • False

Question 14

Question
Which of these would you observe in the reaction between sodium and water?
Answer
  • Shoots around surface of the water
  • Hissing sound
  • Burns with a lilac flame
  • Effervescence/fizzing
  • Never disappears
  • Melts into a shiny ball

Question 15

Question
The noble gases are unreactive because they are too large and have very weak electrostatic forces.
Answer
  • True
  • False

Question 16

Question
What is the test for carbon dioxide?
Answer
  • Burns with a squeaky pop
  • Turns limewater milky
  • Relights a glowing splint
  • Bleaches paper

Question 17

Question
Which gas relights a glowing splint?
Answer
  • Carbon dioxide
  • Ammonia
  • Hydrogen
  • Oxygen

Question 18

Question
In the reaction between potassium chloride and iodine, iodine displaces chloride to form potassium iodide.
Answer
  • True
  • False

Question 19

Question
Which are properties of the halogens?
Answer
  • Good conductors
  • Highly reactive
  • Alkaline
  • Poisonous
  • Bleaches
  • Metals
  • Form diatomic molecules
  • Painkillers
  • Form coloured gases

Question 20

Question
Why does increasing temperature increase rate of reaction?
Answer
  • 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.