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GCSE AQA Combined Science Trilogy Chemistry Paper 2
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Question 1 of 49Question 11 Point
Which of these reasons explains why temperature affects rate of reaction?
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Question 2 of 49Question 21 Point
When there are more frequent collisions between particles, what will happen to the rate of reaction?
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Question 3 of 49Question 31 Point
Increasing the concentration of solutions increases the rate of reaction, why is this the case?
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Question 4 of 49Question 41 Point
Which of the following symbols is used to represent a reversible reaction?
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Question 5 of 49Question 53 Points
Which of the following are conditions that are used during the Haber process?
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Question 6 of 49Question 61 Point
The environment in which a reaction takes place can affect the direction of the equilibrium shift.
Hydrogen reacts with iodine to form hydrogen iodide. Match the change with the correct outcome.
H₂(g) + I₂(g) ⇌ 2HI(g)Fill in the blanks with the following terms:
Right, left
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Match the following changes with the correct outcome:
- Increasing the concentration of H₂ will shift the equilibrium to the .
- Decreasing the pressure of I₂ will shift the equilibrium to the .
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Question 7 of 49Question 71 Point
The environment in which a reaction takes place can affect the direction of the equilibrium shift.
Hydrogen reacts with iodine to form hydrogen iodide. Match the change with the correct outcome.
H₂(g) + I₂(g) ⇌ 2HI(g)- Equilibrium shifts to the right
- Equilibrium shifts to the left
- H₂ is added
- H₂ is removed
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Question 8 of 49Question 81 Point
The environment in which a reaction takes place can affect the direction of the equilibrium shift.
A reaction is exothermic in the forwards direction. Match the change in temperature with the correct outcome.
- Equilibrium shifts to the left
- Equilibrium shifts to the right
- Increasing temperature
- Decreasing temperature
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Question 9 of 49Question 91 Point
There is a dynamic equilibrium formed in the following reaction: nitrogen dioxide ⇌ dinitrogen tetroxide. Which of the following will happen if we add more nitrogen dioxide?
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Question 10 of 49Question 103 Points
Use the following words to fill in the blanks:
Open, closed, active, dynamic, static
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- equilibrium only occurs in systems.
- In an system gases can escape so equilibrium would not be achieved.
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Question 11 of 49Question 111 Point
The following equations show cracking of a long hydrocarbon into a shorter alkane and an alkene. Which equation is correct?
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Question 12 of 49Question 121 Point
What is the purpose of cracking?
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Question 13 of 49Question 131 Point
Which descriptions are accurate about saturated and unsaturated hydrocarbons?
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Question 14 of 49Question 141 Point
Which of the following is a difference between alkanes and alkenes?
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Question 15 of 49Question 151 Point
Crude oil separated by fractional distillation creates unequal volumes of each fraction e.g. fuel oil. These unequal volumes also do not match the demand for each fraction. What process is carried out to balance out the supply with demand?
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Question 16 of 49Question 161 Point
Alkanes all have the same general formula. What is that formula?
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Question 17 of 49Question 171 Point
Renewable, non-renewable
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Complete the sentence: Methane is a fossil fuel found in natural gas.
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Question 18 of 49Question 181 Point
Hydrocarbons are compounds that contain which two elements only?
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Question 19 of 49Question 191 Point
Hydrocarbons with the longest carbon chains have the highest boiling points. Where are the fractions with the smallest carbon chains removed in a fractionating column?
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Question 20 of 49Question 201 Point
Which of the following statements are correct about crude oil?
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Question 21 of 49Question 211 Point
Which process do we use to separate crude oil into more useful and simpler mixtures?
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Question 22 of 49Question 221 Point
Why is bitumen not a good fuel?
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Question 23 of 49Question 231 Point
Renewable, non-renewable
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Finish the sentence: Petrol, kerosene and diesel oil are fossil fuels obtained from crude oil.
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Question 24 of 49Question 241 Point
A paper chromatography experiment is carried out in a lab. The distance moved by the spot was 6cm and the solvent had moved by 8cm. Calculate the Rf value.
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Question 25 of 49Question 251 Point
The distance travelled by a spot is determined by the solubility of the compound. How does solubility impact distance travelled?
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Question 26 of 49Question 261 Point
What is the equation for Rf values in paper chromatography?
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Question 27 of 49Question 271 Point
Which of the following are uses for paper chromatography?
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Question 28 of 49Question 281 Point
Drag and drop to match the description to the phase of chromatography
- Mobile phase
- Stationary phase
- The solvent
- The paper
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Question 29 of 49Question 294 Points
Use some of the following words to fill in the blanks.
Earthquakes, volcanism, condensed, rivers, oceans, photosynthesis
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- The development of the early atmosphere was mainly from which released gases from inside the Earth.
- The formation of the oceans happened when water vapour in the atmosphere as the Earth cooled.
- A decrease in CO₂ in the atmosphere occurred as CO₂ dissolved into .
- An increase in O₂ in the atmosphere occurred when organisms started the process of
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Question 30 of 49Question 301 Point
Which steps can we take to reduce the impact of climate change on humanity or prevent further climate change?
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Question 31 of 49Question 311 Point
Which of the following is the chemical test for oxygen?
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Question 32 of 49Question 322 Points
Use some of the following words:
Magnetic, volcanic, magnetospheres, detritivore, volcanoes
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On early Earth, there was a lot of activity as the planet was cooling down. We can link this to the formation of the atmosphere by measuring the gases released by and comparing them to the composition of the atmosphere over time
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Question 33 of 49Question 331 Point
Why do historical measurements by humans of global temperature have some uncertainty?
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Question 34 of 49Question 341 Point
Why is carbon and carbon monoxide produced during incomplete combustion?
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Question 35 of 49Question 351 Point
Which of the following are causes of acid rain?
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Question 36 of 49Question 361 Point
Which of the following are negative effects of acid rain?
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Question 37 of 49Question 372 Points
Which of the following points are advantages of recycling?
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Question 38 of 49Question 381 Point
Drag and drop to match the advantage and disadvantage of recycling compared to extraction from ores
- Mining ores damages the landscape
- Waste metals can be difficult to sort
- Advantage
- Disadvantage
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Question 39 of 49Question 394 Points
Use some of the following words to fill in the blanks.
Noise, landfill, river, habitats, dust
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Complete the following statements about the advantages of recycling compared to the extraction of metals from ores.
- Mining produces and pollution
- Mining can damage important
- Less waste metal ends up in sites
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Question 40 of 49Question 401 Point
A life-cycle assessment determines that 100,000 kilojoules of energy will be consumed to produce 1kg of magnesium from an ore. Alternatively, it would consume 25,000 kilojoules to extract the same mass of magnesium through recycling. Which method should be used given this information?
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Question 41 of 49Question 411 Point
How could we accurately monitor the rate of a reaction?
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Question 42 of 49Question 421 Point
Drag and drop to match the outcome with the type of reaction
- Exothermic
- Endothermic
- If there is no energy input – reactions continue until reactants run out
- If there is no energy input – reactions stop even if there are reactants left
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Question 43 of 49Question 431 Point
Temperature affects the rate of reaction. Which of the following is the correct description of what happens when temperature changes?
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Question 44 of 49Question 441 Point
Surface area to volume ratio affects rate of reaction. Why is that the case?
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Question 45 of 49Question 452 Points
Ammonia is produced as a reversible reaction between which elements?
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Question 46 of 49Question 461 Point
Can the process used to obtain ammonia achieve dynamic equilibrium?
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Question 47 of 49Question 474 Points
Use some of the following words to fill in the blanks:
Hydrogen, nitrogen, oxygen, chlorine, air, natural, artificial, water
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Complete the statements about the elements used in the process to make ammonia:
- is extracted from the .
- is obtained from gas
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Question 48 of 49Question 481 Point
Select the accurate statements about alkanes.
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Question 49 of 49Question 496 Points
A student investigated the rate of gas production when different concentrations of sodium thiosulfate react with hydrochloric acid to produce sulfur dioxide.
Describe a method the student could use to measure the rate of reaction. (enter your answer)
You should include:
- how to set up the apparatus and the materials you would use
- the measurements you would make
- how you would control other variables
Correct 6 / 6 PointsIncorrect / 6 Points
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