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

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

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

MCQ

CH2 - SEPARATING SUBSTANCES

A student takes 2 g samples of calcium carbonate and adds them to 20 cm3 samples of dilute hydrochloric acid at different temperatures. She measures h...

2009 Summer

MCQ

CH2 - SEPARATING SUBSTANCES

A student carries out an experiment to prepare pure magnesium sulfate crystals. The diagram shows the first stage of the preparation. He adds magne...

2009 Winter

MCQ

CH2 - SEPARATING SUBSTANCES

A student separates salt from a mixture of salt and sand.What is the correct order of steps for the student to take?

2009 Winter

MCQ

CH2 - SEPARATING SUBSTANCES

A student separates salt from a mixture of salt and sand.What is the correct order of steps for the student to take?

2009 Winter

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

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

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

Theory

CH4 - ATOMS COMBINING

(a) A list of compounds is shown.aluminium oxidecalcium bromidecalcium oxideethaneethenehydrogen chloridemethanenitrogen dioxidepotassium iodidepotass...

2020 Spring

Theory

CH14 - MAKING USE OF METALS

Iron is extracted by heating a mixture of coke (carbon), limestone and iron ore in air in a blast furnace.A diagram of the blast furnace is shown.(a) ...

2020 Spring

Theory

CH15 - AIR AND WATER

Water is essential for many industrial processes.(a) State one use of water in industry..................................................................

2020 Spring

Theory

CH17 - ORGANIC CHEMISTRY

Angelic acid and ethanoic acid are both carboxylic acids.The structure of angelic acid is shown.(a) (i) On the structure of angelic acid, draw a circl...

2020 Spring

Theory

CH12 - THE PERIODIC TABLE

The table shows some properties of four metals in Group I of the Periodic Table.[Table_1](a) Complete the table to estimate:• the melting point of r...

2020 Spring

Theory

CH11 - ACIDS AND BASES

This question is about the reactions of magnesium with nitric acid.(a) The equation for the reaction of magnesium with concentrated nitric acid is sho...

2020 Spring

Theory

CH1 - STATES OF MATTER

(a) The electrolysis of dilute sulfuric acid produces gases at both electrodes.(i) The incomplete apparatus is shown.Complete the diagram by:- labelli...

2020 Spring

Theory

CH4 - ATOMS COMBINING

(a) The structures of four substances C, D, E and F, are shown.(i) Which one of these substances, C, D, E or F, is a gas at room temperature?............

2020 Spring

MCQ

CH1 - STATES OF MATTER

Nitrogen is heated in a balloon, which expands slightly. Which statements about the molecules of nitrogen are correct? 1. They move further apart. 2...

2020 Summer

MCQ

CH1 - STATES OF MATTER

Which piece of apparatus should be used to measure exactly 21.4 \text{ cm}^3 of water?

2020 Summer