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 diagram shows the result of dropping a purple crystal into water.Which processes take place in this experiment?[Table_1]| | chemical reac...

2014 Summer

Theory

CH2 - SEPARATING SUBSTANCES

The four pieces of apparatus shown below are used in chemical experiments.Which statement about the apparatus is correct?A. The burette measures the v...

2014 Summer

Theory

CH2 - SEPARATING SUBSTANCES

Alcohol and water are completely miscible. This means when mixed together they form only one liquid layer.Which method is used to separate alcohol fro...

2014 Summer

Theory

CH3 - ATOMS AND ELEMENTS

The diagram shows the structure of an atom of element X. What is X?A. boronB. carbonC. sodiumD. sulfur

2014 Summer

Theory

CH3 - ATOMS AND ELEMENTS

The diagrams show four particles. Which two diagrams show atoms that are isotopes of each other?A 1 and 2B 1 and 3C 2 and 3D 2 and 4

2014 Summer

Theory

CH4 - ATOMS COMBINING

The 'lead' in a pencil is made of a mixture of graphite and clay. When the percentage of graphite is increased, the pencil slides across the paper mor...

2014 Summer

Theory

CH4 - ATOMS COMBINING

Element X is in Group I of the Periodic Table. X reacts with element Y to form an ionic compound.Which equation shows the process that takes place whe...

2014 Summer

Theory

CH4 - ATOMS COMBINING

Solid F is an element.Solid G is a compound.Neither solid conducts electricity but G conducts electricity when dissolved in water.These properties sug...

2014 Summer

Theory

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

A compound contains one atom of calcium, two atoms of hydrogen and two atoms of oxygen.What is the correct chemical formula of the compound?A CaO_2H_2...

2014 Summer

Theory

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

In athletics, banned drugs such as nandrolone have been taken illegally to improve performance. Nandrolone has the molecular formula $C_{18}H_{26}O_{2...

2014 Summer