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

The diagram shows a cup of tea. Which row describes the water particles in the air above the cup compared with the water particles in the cup? [Tabl...

2013 Summer

1

MCQ

CH11 - ACIDS AND BASES

Crystals of sodium chloride were prepared by the following method.1. 25.0 cm3 of dilute hydrochloric acid was accurately measured into a conical flask...

2013 Summer

2

MCQ

CH11 - ACIDS AND BASES

Lead iodide is insoluble in water. Lead iodide is made by adding aqueous lead nitrate to aqueous potassium iodide. Which pieces of apparatus are neede...

2013 Summer

3

MCQ

CH3 - ATOMS AND ELEMENTS

Element X is represented by $^{27}_{13}\text{X}$.Which statement about element X is correct?

2013 Summer

2

MCQ

CH12 - THE PERIODIC TABLE

The positions of four elements are shown on the outline of the Periodic Table.Which element forms a coloured oxide?

2013 Summer

2

MCQ

CH4 - ATOMS COMBINING

For which substance is the type of bonding not correct? [Table_1]

2013 Summer

1

MCQ

CH4 - ATOMS COMBINING

Element X has six electrons in its outer shell. How could the element react?

2013 Summer

3

MCQ

CH1 - STATES OF MATTER

The diagram shows an incomplete circuit. Which substance causes the lamp to light when added to the glass tube?

2013 Summer

2

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

A compound with the formula $XF_2$ has a relative formula mass of 78. What is element X?

2013 Summer

1

MCQ

CH13 - THE BEHAVIOR OF METALS

What is the balanced chemical equation for the reaction between calcium and water?

2013 Summer

2