Theory

CH14 - MAKING USE OF METALS

Aluminium is extracted from its oxide by electrolysis. The oxide is dissolved in ……1…… cryolite and aluminium is deposited at the ……2…�...

2009 Summer

Theory

CH14 - MAKING USE OF METALS

Which diagram represents the structure of an alloy?

2009 Summer

Theory

CH14 - MAKING USE OF METALS

In a blast furnace, iron(III) oxide is converted to iron and carbon monoxide is converted to carbon dioxide.$$\text{Fe}_2\text{O}_3 + 3\text{CO} \righ...

2009 Summer

Theory

CH14 - MAKING USE OF METALS

Stainless steel is an alloy of iron and other metals. It is strong and does not rust but it costs much more than normal steel.What is not made from st...

2009 Summer

Theory

CH14 - MAKING USE OF METALS

Aluminium is extracted from its oxide by electrolysis.The oxide is dissolved in ......1...... cryolite and aluminium is deposited at the ......2.........

2009 Summer

Theory

CH14 - MAKING USE OF METALS

Which diagram represents the structure of an alloy?[Image of diagrams A, B, C, D]

2009 Summer

Theory

CH14 - MAKING USE OF METALS

In a blast furnace, iron(III) oxide is converted to iron and carbon monoxide is converted to carbon dioxide.$$\text{Fe}_2\text{O}_3 + 3\text{CO} \righ...

2009 Summer

Theory

CH14 - MAKING USE OF METALS

Stainless steel is an alloy of iron and other metals. It is strong and does not rust but it costs much more than normal steel.What is not made from st...

2009 Summer

Theory

CH14 - MAKING USE OF METALS

The diagram shows how aluminium is manufactured by electrolysis. What are the anode and cathode made of?[Table_1]

2009 Winter

Theory

CH14 - MAKING USE OF METALS

Which statement about alloys is not correct?A. Alloys are more expensive than the metals they are made from.B. Alloys are mixtures of different metals...

2009 Winter

Theory

CH1 - STATES OF MATTER

The diagrams show the arrangement of particles in three different physical states of substance X.Which statement about the physical states of substanc...

2011 Summer

Theory

CH2 - SEPARATING SUBSTANCES

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

2011 Summer

Theory

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

Theory

CH4 - ATOMS COMBINING

Which two elements react together to form an ionic compound? [Table_1] A. W and X B. X and Y C. Y and Z D. Z and W

2011 Summer

Theory

CH3 - ATOMS AND ELEMENTS

The diagram shows part of the Periodic Table.Which element is correctly matched with its electronic structure?[Table_1: electronic structure]A: 2,8,1B...

2011 Summer

Theory

CH4 - ATOMS COMBINING

In the diagrams, circles of different sizes represent atoms of different elements.Which diagram represents hydrogen chloride gas?Options: A, B, C, D

2011 Summer

Theory

CH4 - ATOMS COMBINING

The nucleon number and proton number of the lithium atom are shown by the symbol $^7_3\text{Li}$.What is the correct symbol for the lithium ion in lit...

2011 Summer

Theory

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

What is the relative molecular mass ($M_r$) of HNO$_3$? A 5 B 31 C 32 D 63

2011 Summer

Theory

CH14 - MAKING USE OF METALS

Electricity from a power station passes through overhead cables to a substation and then to a school where it is used to electrolyse concentrated hydr...

2011 Summer

Theory

CH1 - STATES OF MATTER

Which statement about the electrolysis of molten lead(II) bromide is correct? A A colourless gas is seen at the cathode. B A grey metal is seen at...

2011 Summer