2001

Section A: Multiple Choice

1. Which element is an alkali metal?

A AluminiumB CalciumC CopperD Sodium

2. Which of the following is the electron arrangement for a metal?

A 2, 8, 1B 2, 8, 5C 2, 8, 7D 2, 8, 8

3. Which pair of reactants would produce hydrogen most slowly?

A Magnesium powder and 4 mol l-1 acidB Magnesium ribbon and 2 mol l-1 acidC Magnesium powder and 2 mol l-1 acidD Magnesium ribbon and 4 mol l-1 acid

4. In a reaction, 60cm3 of gas were collected in 20s. The average rate at which gas was given off, in cm3s-1, was

A

B

C

D

5. Ions are formed when atoms lose or gain electrons.

Which two elements form ions with the same electron arrangement as argon atoms?

Section B

1. The most common type of isotope of Potassium is

a) Complete the table to show the number of particles in an atom of

b) How do isotopes of potassium differ from each other?

2. What is meant by a heterogeneous catalyst?

3. a) Describe the test for oxygen gas.

b) Explain why this test is not positive with air.

2002

Section A: Multiple Choice

1. Which of the following elements is the most recently discovered? (You may wish to use page 8 of the data book.)

A AluminiumB HydrogenC IodineD Magnesium

2. Which of the following gases does not exist as diatomic molecules?

A NitrogenB OxygenC FluorineD Neon

3. An atom has atomic number 17 and mass number 35.The number of neutrons in the atom is

A 17B 18C 35D 52

Section B

1. A student investigated the effect of changing the concentration of the sodium thiosulphate solution on the reaction rate.The results obtained are shown below.

a) The graph shows that the reaction rate increases as concentration increases. Use the collision theory to explain why the rate increases.

2. a) What is the name given to the group 7 elements?

b) The diagram shows the chemical energies of the reactants and products when fluorine reacts with hydrogen.

i) What does the diagram indicate about the chemical reaction?

2003

Section A: Multiple Choice

1. Which of the following compounds contains both a transition metal ion and a halide ion?

A Aluminium BromideB Cobalt ChlorideC Iron OxideD Sodium Fluoride

2. Magnesium was reacted with dilute hydrochloric acid under different conditions. In each experiment an excess of magnesium was added.

Which line in the table correctly describes Reaction 2 when compared to Reaction 1?

3. An atom is neutral because

A the number of protons equals the number of neutronsB the number of electrons equals the number of protonsC the number of electrons equals the number of protons plus neutronsD the number of neutrons equals the number of protons plus electrons

4. Which of the following is the electron arrangement for an atom of an alkali metal?

A 2, 8, 1B 2, 8, 2C 2, 8, 3D 2, 8, 4

5. Different isotopes of the same element have identical

A nucleiB mass numbersC atomic numbersD numbers of neutrons

Section B

1. Yogurt is made by fermenting fresh milk. Enzymes help to convert lactose in the milk to lactic acid.

a) What is an enzyme?

2. Dinitrogen monoxide can be used to boost the performance of racing car engines.When dinitrogen monoxide decomposes it forms a mixture of nitrogen and oxygen. The reaction is exothermic.

a) What is meant by an exothermic reaction?

3. DIMP is a useful insect repellent.An experiment was set up to find out how quickly DIMP is hydrolysed.The graph shows how the concentration of DIMP changed during hydrolysis.

a) By how much does the concentration of DIMP fall in the first 400s?

b) Calculate the average rate of reaction, in mol l-1 s-1, between 0 and 400s.

2004

Section A: Multiple Choice

1. Which of the following is a noble gas?

A NitrogenB FluorineC OxygenD Neon

2. When hydrogen chloride gas is dissolved in water a solution containing hydrogen ions and chloride ions is formed.Which equation correctly shows the state symbols for this change?

A HCl(g) + H2O(l) H+(aq) + Cl-(aq)B HCl(l) + H2O(aq) H+(l) + Cl-(l)C HCl(aq) + H2O(l) H+(aq) + Cl-(aq)D HCl(g) + H2O(l) H+(l) + Cl-(l)

3. The graph below shows the variation of concentration of a reactant with time as a reaction proceeds.

During the first 25s, the average rate, in mol l-1s-1, is

A 0.04B 0.03C 0.02D 0.01

4. The table shows the times taken for 0.5g of magnesium to react completely with acid under different conditions.

The time for 0.5g of magnesium to react completely with 0.2 mol l-1 acid at 25◦C will be

A less than 10sB between 10s and 20sC between 20s and 60sD more than 80s

5. An atom has atomic number 26 and mass number 56.The number of electrons in the atom is

A 26B 30C 56D 82

Section B

1. The nuclide notation for an isotope of hydrogen is

a) An isotope of bromine has an atomic number 35 and mass number 81.

i) Complete the nuclide notation for this isotope of bromine.

Brii) How many neutrons are there in this isotope?

b) Bromine has two isotopes. One has a mass number of 81 and the other has a mass number of 79.The relative atomic mass of bromine is 80.What does this tell you about the percentage of each isotope in bromine?

2. In a catalytic converter, harmful gases are changed into less harmful gases by passing them over a solid catalyst as shown in the diagram.

a) Why can the catalyst be described as a heterogeneous catalyst?

2005

Section A: Multiple Choice

1. Graph P shows the volume of hydrogen gas collected when 1.0g of magnesium ribbon reacts with excess 2 mol l-1 hydrochloric acid.

Which of the following samples of magnesium, when reacted with excess 2 mol l -1 hydrochloric acid would produce graph Q.

A 0.5g of magnesium ribbonB 0.5g magnesium powderC 1.0g of magnesium powderD 2.0g of magnesium ribbon

2. Which of the following compounds contains only two elements?

A Magnesium hydroxideB Magnesium phosphateC Magnesium sulphiteD Magnesium nitride

3. Which of the following gases is unchanged when it passes through the catalytic converter in a car?

A Carbon dioxideB Carbon monoxideC Nitrogen dioxideD Nitrogen monoxide

4. 2, 8, 8 is the electron arrangement for an atom of an element belonging to the

A halogensB noble gasesC alkali metalsD transition metals

5. Different atoms of the same element have identical

A nucleiB mass numbersC numbers of neutronsD numbers of protons

Section B

1. a) The alkali metals, the halogens and the noble gases are the names of groups of elements in the Periodic Table.Complete the table by circling a word in each box to give correct information about each group. (Two pieces of correct information have already been circled.)

b) Complete the table for the particle shown below.

2. a) Zinc reacts with dilute hydrochloric acid producing hydrogen gas.

(i) State the test for hydrogen gas(ii) During the experiment, the test tube becomes warm. What term is used to describe a

reaction which gives out heat?

b) The rate of reaction between zinc and dilute hydrochloric acid can be followed by measuring the volume of gas given off during the reaction.

i) Plot a line graph of the results of the reaction.ii) Predict the volume of gas (in cm3) which would have been given off after 60 seconds.

c) Calculate the average rate (in cm3s-1) at which gas is given off during the first 40 seconds of the reaction.

d) Why would increasing the concentration of the acid increase the rate of the reaction?

2006

Section A: Multiple Choice

1. Which of the following elements is an alkali metal?

A AluminiumB CalciumC Copper D Sodium

2. Lemonade can be made by dissolving sugar, lemon juice and carbon dioxide in water. In lemonade, the solvent is

A waterB sugarC lemon juiceD carbon dioxide

3. The mass number of the atom is

A 11B 12C 23D 34

4. Which of the following is the electron arrangement for a halogen atom? (you may wish to use page 1 of the data booklet to help you)

A 2, 5B 2, 6C 2, 7D 2, 8

5. The table shows information about some atoms.

Atom Atomic Number Mass NumberW 16 34X 18 36Y 18 40Z 20 40

Which two atoms are isotopes of the same element?

A W and XB X and Y

C W and YD Y and Z

6. Catalytic converters speed up the conversion of harmful gases into less harmful gases. Which of the following reactions is most likely to occur in a catalytic converter?

A Carbon dioxide reacting to form carbon monoxideB Carbon monoxide reacting to form carbon dioxideC Nitrogen reacting to form nitrogen dioxideD Oxygen reacting to form hydrogen oxide

Section B

1. Complete the table to show the numbers of particles in the iron ion

Type of particle NumberProtons

NeutronsElectrons

2007

Section A: Multiple Choice

1. Which of the following elements has similar chemical properties to argon?

A FluorineB KryptonC PotassiumD Zinc

2.

Which of the following would not be evidence of a chemical reaction when the solid is added to the solution?

A A colour changeB A gas being given offC The temperature risingD The solid disappearing

3. Which line in the table shows the approximate percentage composition of air?

4. Isotopes of the same element have identical

A nucleiB mass numberC number of neutronsD number of protons

5. Vinegar is prepared by dissolving ethanoic acid in water. Which line in the table identifies the solute, solvent and solution?

Section B

1. The diagram represents the structure of an atom.

a) Complete the tablesb) Ernest Rutherford used alpha particles to confirm the structure of the atom. The table

shows the number of protons, electrons and neutrons in an alpha particle.

i) What is the atomic number of an alpha particle?

ii) When alpha particles are passed through an electric field, which letter in the diagram shows the path taken by them?

Letter _______________

2. Hydrogen peroxide solution decomposes to give water and oxygen.

a) The graph shows the results of an experiment carried out to measure the volume of oxygen gas released.

Calculate the average rate of reaction (in cm3s-1) between 0 and 20 seconds.

b) The reaction was catalysed by a solution of Fe3+ ions which is amber in colour.

i) Why is the term homogeneous used to describe this catalyst?ii) What colour would the solution be at the end of the reaction?

3. Magnesium reacts with dilute hydrochloric acid.

The equation for the reaction is shown.

Mg(s) + 2HCl(aq) MgCl2( ) + H2(g)

a) i) Complete the equation by adding the state symbol for magnesium chloride. (You may wish to use page 5 of the data booklet to help you.)

ii) State the test for hydrogen gas.2009

Section A: Multiple Choice

1. Which of the following gases is a noble gas?

A ArgonB OxygenC FluorineD Nitrogen

2. Which line in the table correctly shows how the concentration of a solution changes by adding more solute or by adding more solvent?

3. Magnesium and zinc both react with hydrochloric acid. In which of the following experiments would the reaction rate be fastest?

4. The table shows the numbers of protons, electrons and neutrons in four particles, W, X, Y and Z.

Which pair of particles are isotopes?

A W and XB W and YC X and YD Y and Z

5. When solid sodium chloride dissolves in water, a solution containing sodium ions and chloride ions is formed.Which of the following equations correctly shows the state symbols for this process?

A NaCl(s) + H2O(l) Na+(l) + Cl-(l)B NaCl(s) + H2O(l) Na+(aq) + Cl-(aq)C NaCl(s) + H2O(aq) Na+(aq) + Cl-(aq)D NaCl(aq) + H2O(l) Na+(aq) + Cl-(aq)

Section B

1. Atoms contain particles called protons, neutrons and electrons.The nuclide notation of the sodium atom is shown.

a) Complete the table to show the number of each type of particle in this sodium atom.

b) Electrons are arranged in energy levels.i) Complete the diagram to show how the electrons are arranged in a sodium

atom.(You may wish to use page 1 of the data booklet to help you.)

ii) Explain what holds the negatively charged electrons in place around the nucleus.

2. When calcium chloride is dissolved in water, heat is released to the surroundings.

a) What term is used to describe chemical reactions which give out heat?

b) A student investigated how changing the mass of calcium chloride affects the heat released.

i) Plot a line graph of the results.

ii) Using your graph, find the mass (in grams) of calcium chloride that would give a temperature of 40◦C.

iii) State an advantage of using a polystyrene beaker in this experiment.