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WorksheetsPaper 2 training
Total questions: 24
Worksheet time: 12mins
Which statement defines excretion?
the chemical reactions in cells that break down nutrient molecules and release energy for
metabolism
the removal from organisms of the waste products of metabolism
the taking in of materials for energy, growth and development
the ability to detect or sense stimuli in the internal or external environment and to make
appropriate responses
The diagram shows an incomplete plant cell.
Which structure is not shown?
cell membrane
cell wall
chloroplast
vacuole
What are the molecules that make up fats and oils?
amino acids and glycerol
fatty acids and glycerol
glucose and amino acids
glucose and fatty acids
Which graph shows the effect of increasing light intensity on the rate of photosynthesis?
A
B
C
D
The diagram shows part of the alimentary canal and associated organs.
Where is lipase produced?
A
B
C
D
The diagram shows a food web.
How many organisms act as secondary consumers in this food web?
2
3
4
6
The electronic structures of four isotopes are shown.
Which isotopes have the same chemical properties?
1 and 3
1 and 4
2 and 3
2 and 4
What is the mass of hydrogen in 51 g of ammonia, NH3?
3 g
9 g
14 g
17 g
Molten lead(II) bromide is electrolysed.
Which equation represents the reaction at the cathode?
Substance X is insoluble in water.
It reacts with dilute nitric acid to produce solution Y and a gas which turns limewater milky.
A white precipitate is formed when aqueous sodium hydroxide is added to solution Y. This
precipitate remains when excess sodium hydroxide is added.
What is substance X?
calcium carbonate
calcium chloride
zinc carbonate
zinc chloride
Astatine is below iodine in Group VII of the Periodic Table.
Which statements about astatine are correct?
1 It is monoatomic.
2 It is a solid at room temperature.
3 It is lighter in colour than iodine.
4 It does not react with aqueous potassium iodide.
1 and 2
1 and 3
2 and 4
3 and 4
Which elements in the Periodic Table form coloured compounds?
Group I metals
halogens
noble gases
transition metals
Naphtha is obtained from petroleum.
What is a use for naphtha?
cooking
making chemicals
heating
making roads
Ethanol is manufactured by reacting ethene with steam in the presence of a catalyst.
Which type of reaction occurs?
addition
oxidation
polymerisation
reduction
The table compares an atom of carbon-13 and an atom of nitrogen-14.
What do the neutral atom of carbon-13 and the neutral atom of nitrogen-14 have the same
number of?
electrons
ions
neutrons
protons
What do plants need for their nutrition?
carbon dioxide, ions, organic compounds and light
carbon dioxide, ions, organic compounds and water
carbon dioxide, ions, light and water
carbon dioxide, organic compounds, light and water
The photograph shows red onion cells placed in a concentrated salt solution.
Which statement explains their appearance?
Water has moved into the cells against a water potential gradient.
Water has moved out of the cells down a water potential gradient.
Water has moved out of the cells against a water potential gradient.
Water has moved into the cells down a water potential gradient.
The graph shows the rate of reaction of salivary amylase at different temperatures.
What does the graph show at point X?
The enzyme has stopped working.
The reaction is nearly completed.
The reaction rate is controlled by pH.
The temperature is higher than the optimum.
What is an undesirable effect of deforestation?
It increases the oxygen concentration of the atmosphere.
It leads to erosion and loss of soil.
It makes land available for agriculture.
It pollutes the air with methane.
In which substance are the particles closest together at room temperature?
CO2
Ne
N2
Zn
Which statement about ions is not correct?
Atoms form ions by gaining or losing electrons.
Ions are formed by non-metal atoms only when they lose electrons.
Ions in a solid ionic compound form a lattice structure.
Ions with opposite charges attract each other.
1 g of hydrogen contains 6 × 10 to the power of 23 atoms.
The relative atomic mass of helium is 4.
How many atoms does 1 g of helium contain?
1.5 × 10 to the power of23
3 × 10 to the power of 23
6 × 10 to the power of 23
2.4 × 10 to the power of 24
Alloys are formed by dissolving one metal in another.
Alloys are (1) .
(2) alloys conduct electricity.
Which words complete gaps 1 and 2?
A
B
C
D
Which statement describes addition polymers?
They contain long chains made from only one type of monomer.
They contain carbon-carbon double bonds.
