MCQ

CH2 - SEPARATING SUBSTANCES

A student takes 2 g samples of calcium carbonate and adds them to 20 cm^3 samples of dilute hydrochloric acid at different temperatures. She measures ...

2009 Summer

1

MCQ

CH2 - SEPARATING SUBSTANCES

Which method would be most suitable for the separation of a mixture of sand and water to obtain the sand?

2012 Summer

2

MCQ

CH2 - SEPARATING SUBSTANCES

The diagram shows the paper chromatograms of four substances, W, X, Y and Z.Which two substances are pure?

2009 Summer

1

MCQ

CH2 - SEPARATING SUBSTANCES

Which two methods can be used to separate a salt from its solution in water? 1 crystallisation 2 decanting 3 distillation 4 filtration

2014 Summer

2

MCQ

CH2 - SEPARATING SUBSTANCES

Methanol, CH$_3$OH, and ethanol, C$_2$H$_5$OH, are miscible liquids. Which diagram shows apparatus that is used to obtain methanol from a mixture of ...

2013 Summer

2

MCQ

CH2 - SEPARATING SUBSTANCES

An aqueous solution is coloured.Which method of separation would show that the solution contains ions of different colours?

2011 Summer

1

MCQ

CH2 - SEPARATING SUBSTANCES

The table gives the solubility of four substances in ethanol and in water.A mixture containing all four substances is added to ethanol, stirred and fi...

2011 Summer

1

MCQ

CH2 - SEPARATING SUBSTANCES

A fruit drink coloured orange contains a dissolved mixture of red and yellow colouring agents. One of these colouring agents is suspected of being ill...

2010 Summer

3

MCQ

CH2 - SEPARATING SUBSTANCES

Ethanol is made by fermentation.How is ethanol obtained from the fermentation mixture?

2014 Winter

1

MCQ

CH2 - SEPARATING SUBSTANCES

Part of the instructions in an experiment reads as follows. Quickly add 50 cm$^3$ of acid. What is the best piece of apparatus to use?

2012 Winter

3

MCQ

CH1 - STATES OF MATTER

Which diagram shows the process of diffusion?

2012 Summer

1

MCQ

CH2 - SEPARATING SUBSTANCES

Which method is most suitable to obtain zinc carbonate from a suspension of zinc carbonate in water?

2012 Summer

2

MCQ

CH10 - THE SPEED OF A REACTION

A student investigates how the concentration of an acid affects the speed of reaction with a 0.5 g mass of magnesium at 30°C. The student has a beake...

2012 Summer

2

MCQ

CH3 - ATOMS AND ELEMENTS

An element Y has the proton number 18.The next element in the Periodic Table is an element Z.Which statement is correct?

2012 Summer

1

MCQ

CH3 - ATOMS AND ELEMENTS

Which atom has twice as many neutrons as protons?

2012 Summer

1

MCQ

CH4 - ATOMS COMBINING

Which is a simple covalent molecule? [Table_1]

2012 Summer

2

MCQ

CH4 - ATOMS COMBINING

The electronic structures of atoms P and Q are shown.P and Q react to form an ionic compound. What is the formula of this compound?

2012 Summer

2

MCQ

CH4 - ATOMS COMBINING

The diagrams show the structures of two forms, P and Q, of a solid element. What are suitable uses of P and Q, based on their structures?

2012 Summer

2

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

The equation for the reaction between magnesium and dilute sulfuric acid is shown.$$\text{Mg} + \text{H}_2\text{SO}_4 \rightarrow \text{MgSO}_4 + \tex...

2012 Summer

2

MCQ

CH1 - STATES OF MATTER

Winston Churchill, a British Prime Minister, had his false teeth electroplated with gold.The teeth were coated with a thin layer of carbon and were th...

2012 Summer

2