WorksheetsChemistry-qp21- M/J-2019 Quiz
Total questions: 40
Worksheet time: 20mins
2.00 g of powdered calcium carbonate is added to 50.0 cm³ of hydrochloric acid. Which apparatus is used to measure the calcium carbonate and the hydrochloric acid?
A
B
C
D
Which statement explains why ammonia gas, NH₃, diffuses at a faster rate than hydrogen chloride gas, HCl?
Ammonia expands to occupy all of the space available.
Ammonia has a smaller relative molecular mass than hydrogen chloride.
Ammonia is an alkali and hydrogen chloride is an acid.
Ammonia molecules diffuse in all directions at the same time.
The measurements from a chromatography experiment using substance F are shown. What is the Rf value of F?
0.55
0.61
0.90
1.64
Which statement about an atom of fluorine, ¹⁹₉F, is correct?
It contains more protons than neutrons.
It contains a total of 28 protons, neutrons and electrons.
Its isotopes contain different numbers of protons.
Its nucleus contains 9 neutrons.
Which row describes the formation of single covalent bonds in methane?
A
B
C
D
Which statement describes the structure of an ionic compound?
It is a giant lattice of oppositely charged ions.
It is a giant lattice of positive ions in a ‘sea’ of electrons.
It is a giant molecule of oppositely charged ions.
It is a simple molecule of oppositely charged ions.
Propane burns in oxygen. C₃H₈ + xO₂ → 3CO₂ + yH₂O. Which values of x and y balance the equation?
x = 5, y = 4
x = 7, y = 4
x = 10, y = 8
x = 13, y = 8
A tablet contains 0.080 g of ascorbic acid (Mᵣ = 176). What is the concentration of ascorbic acid when one tablet is dissolved in 200 cm³ of water?
A 9.1 × 10⁻⁵ mol/dm³
B 4.5 × 10⁻⁴ mol/dm³
C 9.1 × 10⁻² mol/dm³
D 2.3 × 10⁻³ mol/dm³
Which statement about the electrolysis of copper(II) sulfate solution using carbon electrodes is correct?
A A colourless gas is produced at the anode.
B A colourless gas is produced at the cathode.
C The colour of the electrolyte remains the same.
D The mass of both electrodes remains constant.
Aluminium metal is extracted from aluminium oxide by electrolysis. Which ionic half-equation describes a reaction that occurs at the named electrode?
A
B
C
D
Which statement about the hydrogen fuel cell is not correct?
A Chemical energy is converted into electrical energy.
B Hydrogen is oxidised.
C The reaction that takes place is endothermic.
D Water is the only product.
Nitrogen reacts with hydrogen to produce ammonia. The reaction is exothermic. The bond energies are shown in the table. What is the energy change for this reaction?
A –1473 kJ/mol
B –87 kJ/mol
C 87 kJ/mol
D 1473 kJ/mol
Which change in reaction conditions increases both the collision rate and the proportion of molecules with sufficient energy to react?
A addition of a catalyst
B increasing the concentration of a reactant
C increasing the surface area of a reactant
D increasing the temperature of the reaction
When blue-green crystals of nickel(II) sulfate are heated, water is produced and a yellow solid remains. When water is added to the yellow solid, the blue-green colour returns. Which process describes these changes?
A combustion
B corrosion
C neutralisation
D reversible reaction
The graph shows how the yield of product in a reversible reaction changes as the temperature and pressure are changed. All reactants and products are gases. Which row is correct for this reversible reaction?
A
B
C
D
Which changes represent oxidation?
1 and 2
1 and 3
1 only
2 only
Nitrogen(I) oxide, N₂O, nitrogen(II) oxide, NO, and carbon monoxide, CO, are all non-metal oxides. They do not react with acids or bases. Which statement is correct?
They are acidic oxides.
They are amphoteric oxides.
They are basic oxides.
They are neutral oxides.
The positions of elements W, X, Y, and Z in the Periodic Table are shown. Which elements form basic oxides?
W, X, and Y
W and X only
Y only
Z only
Ethanoic acid is a weak acid. Hydrochloric acid is a strong acid. Which statements are correct?
1 and 2
1 and 3
2 and 4
3 and 4
The properties of an element are shown: electrical conductivity (high), density (low), reaction with water (reacts violently with cold water). Which element has these properties?
A
B
C
D
Which statement about elements in Group I and Group VII of the Periodic Table is correct?
Bromine reacts with potassium chloride to produce chlorine.
Iodine is a monoatomic non-metal.
Lithium has a higher melting point than potassium.
Sodium is more reactive with water than potassium.
Which statement about elements in Group VIII of the Periodic Table is correct?
They all have a full outer shell of electrons.
They all react with Group I elements to form ionic compounds.
They are all diatomic molecules.
They are all liquids at room temperature.
The diagrams show the structure of two substances used to make electrical conductors. Which statement correctly describes X and Y?
X is a pure metal and Y is a compound.
X is a pure metal and Y is an alloy.
X is a solid and Y is a liquid.
X is harder and stronger than Y.
Three metal compounds, P, Q and R, are heated using a Bunsen burner. The results are shown.
A
B
C
D
Zinc is extracted from its ore, zinc blende, using two chemical reactions.
A
B
C
D
Four metals, zinc, M, copper and magnesium, are reacted with aqueous solutions of their nitrates. The results are shown in the table. What is the order of reactivity of these four metals starting with the most reactive?
A copper → zinc → M → magnesium
B copper → M → zinc → magnesium
C magnesium → M → zinc → copper
D magnesium → zinc → M → copper
Why is aluminium used to make containers for storing food?
A It conducts electricity.
B It has a high melting point.
C It is resistant to corrosion.
D It is strong.
Water can be treated by filtration then chlorination. Which uses do not need water of this quality?
A 1, 2 and 3
B 1 and 2 only
C 1 and 3 only
D 2 and 3 only
Oxides of nitrogen are formed in car engines and are a source of air pollution. To decrease this pollution, catalytic converters are fitted to car exhausts. What happens to the oxides of nitrogen in the catalytic converter?
A combustion
B cracking
C oxidation
D reduction
The diagram shows an experiment to investigate how paint affects the rusting of iron. What happens to the water level in tubes P and Q?
A
B
C
D
Ammonia is manufactured by the Haber Process.
A
B
C
D
The carbon cycle is shown. Which row describes processes X, Y, and Z?
A
B
C
D
Which row shows the conditions used in the Contact process?
A
B
C
D
The diagram represents a lime kiln used to heat limestone to a very high temperature. What leaves the kiln at X?
calcium carbonate
calcium hydroxide
calcium oxide
calcium sulfate
Which fuel could be gasoline?
A
B
C
D
Why is ethanol a member of the homologous series of alcohols but propane is not?
Ethanol has two carbon atoms per molecule but propane has three.
Ethanol can be made from ethene but propane is obtained from petroleum.
Ethanol is a liquid but propane is a gas.
Ethanol contains the same functional group as other alcohols but propane does not.
Chlorine reacts with methane. Which statements are correct?
A
B
C
D
Which statements about aqueous ethanoic acid are correct?
1 and 2
1 and 3
1 and 4
2 and 4
The structure of an ester is shown. What is the name of the ester?
ethyl propanoate
methyl propanoate
propyl ethanoate
propyl methanoate
The structure of a polymer is shown. Which type of polymer is shown and by which process is it formed?
A
B
C
D
