Font size
WorksheetsIGCSE Chemistry multiple choice
Total questions: 50
Worksheet time: 36mins
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.
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?
calcium carbonate- balance; hydrochloric acid-burette
calcium carbonate-balance; hydrochloric acid-thermometer
calcium carbonate-pipette; hydrochloric acid-burette
calcium carbonate-pipette; hydrochloric acid-thermometer
The measurements from a chromatography experiment using substance F are shown. The diagram is not drawn to scale.
What is the Rf value of F?
0.55
0.61
0.90
1.64
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
Magnesium reacts with sulfuric acid.
What are the formulae of the products formed in this reaction?
MgSO4 and H2
MgSO4 and H2O
Mg(SO4)2 and H2
Mg(SO4)2 and H2O
Which statement explains why graphite is used as a lubricant?
All bonds between the atoms are weak.
It conducts electricity.
It has a low melting point.
Layers in the structure can slide over each other.
Ethanol is used as a fuel.
ethanol + oxygen --> carbon dioxide + water
Which statements are correct?
1 The reaction is endothermic.
2 The products have more energy than the reactants.
3 The oxygen for this reaction comes from the air.
4 The temperature of the reaction mixture rises during this reaction.
1 and 2
1 and 3
2 and 4
3 and 4
Which metal has variable oxidation states?
aluminium
calcium
copper
sodium
What is the catalyst in the Haber process?
Fe
Ni
Pt
V2O5
Which calcium compound does not neutralise an acid soil?
calcium oxide
calcium sulfate
calcium hydroxide
calcium carbonate
Which type of linkage joins the amino acids in a protein?
In which molecule are all the outer shell electrons from each atom used to form covalent bonds?
CH4
Cl2
H2O
NH3
Which row describes an endothermic reaction?
Which of the following is NOT a characteristic of an acid?
sour taste
corrodes metal
pH > 7
electrolyte
The difference between a strong acid and a weak acid is that a strong acid __________________________.
has a lower pH
has a higher concentration of OH-
has a higher pH
dissociates completely
Cabbage juice changes color in the presence of other chemicals, and the color it changes depends on the other chemical's pH. We can classify cabbage juice as a(n) ______________.
reactant
product
indicator
chameleon
HCl + LiOH --> LiCl + H2O
In the reaction represented by the equation above, which chemical acts as the acid?
HCl
LiOH
LiCl
H2O
Which statement about paper chromatography is correct?
A solvent is needed to dissolve the paper.
Paper chromatography separates mixtures of solvents.
The solvent should cover the baseline.
The baseline should be drawn in pencil.
Which substance does not use oxygen to produce heat energy?
Carbon
Nitrogen
Natural gas
Uranium
List four factors that affects the rate of a reaction
temperature
concentration
surface area
volume
catalysts
A temperature increase causes the particles ......
to slow down
move faster
collide higher
in the right order
How does a catalyst work in speeding up a reaction?
By lowering the activation energy or reaction
by giving them more energy
by making them more available
SO2 + O2 <−> SO3
If the concentration of SO2 is increased, the equilibrium of the reaction will shift ___________.
SO2 + O2 <−> SO3
If the concentration of O2 is decreased, the equilibrium of the reaction will shift ___________.
N2 (g) + 3 H2 (g) <−> 2 NH3 (g)
If the pressure in the system is increased, which substance will increase in concentration?
2SO2(g) + O2(g) ⇄ 2SO3(g) + 197 kJ/mol Which of the following will not shift the equilibrium to the right?
The electron arrangement of an atom of a noble gas can be represented by
2.1
2.8
2.8.4
2.8.7
Which of the following diagrams represents the electron arrangement of an element of Group 1?
The charge on a Sodium ion is
+1
+2
-1
-2
The mass number of an atom is made up from
The number of protons plus electrons
The number of protons plus neutrons
The number of neutrons pus electrons
The number that the element is on the periodic table
Which of the following is a property of an ionic compound?
Brittle
Gas at room temperature
Lustrous
Ductile
'Positive cations in a sea of electrons'
is a phrase used to describe which type of bonding?
Hydrogen
Covalent
Ionic
Metallic
What is salt?
ionic compound
anion
cation
What is cations and anions?
common table salt
acid and basse
positive and negative ions
chemical compound
State a reason why filtration is carried out during the preparation of Copper (II) sulphate when copper (II) oxide is added to dilute Sulphuric (VI)?
To dry Copper (II) Sulphate
To remove water
To remove unreacted Copper (II) oxide
To speed up the rate of reaction
Which of the following is soluble salt?
Magnesium carbonate
Sodium nitrate
Silver chloride
Barium sulphate
Which of the following is insoluble salt?
Sodium carbonate
Ammonium sulphate
Lead(II) chloride
Potassium nitrate
In an experiment, the gas C produced can change moist red litmus paper into blue. What is the gas C ?
Hydrogen gas
Ammonia gas
Hydrogen chloride gas
Nitrogen dioxide gas
