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GCSE AQA Combined Science Trilogy Chemistry Paper 2
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Question 1 of 31Question 1[2 marks]
[question number = 01.1] Select the accurate statements about alkanes.
Correct 2 / 2 PointsIncorrect / 2 Points -
Question 2 of 31Question 2[1 mark]
[question number = 01.2] Alkanes all have the same general formula. What is that formula?
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Question 3 of 31Question 3[4 marks]
(short answer) [question number = 01.3] List the names of the first 4 alkanes in the series
Correct 4 / 4 PointsIncorrect / 4 Points -
Question 4 of 31Question 4[1 mark]
[question number = 01.4] Which descriptions are accurate about saturated and unsaturated hydrocarbons?
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Question 5 of 31Question 5[1 mark]
(short answer) [question number = 01.5] 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 6 of 31Question 6[1 mark]
(short answer) [question number = 01.6] Alkanes and alkenes are both part of a series, what is the name we give to the series?
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Question 7 of 31Question 7[1 mark]
[question number = 01.7] 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 8 of 31Question 8[1 mark]
[question number = 01.8] Hydrocarbons are compounds that contain which two elements only?
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Question 9 of 31Question 9[1 mark]
[question number = 01.9] Why is bitumen not a good fuel?
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Question 10 of 31Question 10[1 mark]
(short answer) [question number = 02.1] Chemical reactions require a high enough collision energy for reactions to take place. What do we call the minimum amount of energy needed for a reaction?
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Question 11 of 31Question 11[1 mark]
(short answer) [question number = 02.2] When there are more frequent collisions between particles, what will happen to the rate of reaction?
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Question 12 of 31Question 12[6 marks]
[question number = 02.3] Explain in detail the different factors that can affect the rate of chemical reactions. Include explanations of how and why each factor influences the rate. (enter your answer)
Correct 6 / 6 PointsIncorrect / 6 Points -
Question 13 of 31Question 13[6 marks]
[question number = 02.4] 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 -
Question 14 of 31Question 14[2 marks]
[question number = 02.5] Ammonia is produced as a reversible reaction between which elements?
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Question 15 of 31Question 15[3 marks]
[question number = 02.6] Which of the following are conditions that are used during the Haber process?
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Question 16 of 31Question 16[4 marks]
[question number = 02.7] 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 17 of 31Question 17[3 marks]
[question number = 02.8] 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 18 of 31Question 18[1 mark]
[question number = 03.1] 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 19 of 31Question 19[1 mark]
[question number = 03.2] 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 20 of 31Question 20[1 mark]
[question number = 03.3] What is the equation for Rf values in paper chromatography?
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Question 21 of 31Question 21[1 mark]
[question number = 03.4] Which of the following are uses for paper chromatography?
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Question 22 of 31Question 22[1 mark]
[question number = 03.5] 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 23 of 31Question 23[4 marks]
[question number = 04.1] Which steps can we take to reduce the impact of climate change on humanity or prevent further climate change?
Correct 4 / 4 PointsIncorrect / 4 Points -
Question 24 of 31Question 24[6 marks]
(short answer) [question number = 04.2] Describe the evolution of Earth’s atmosphere from the formation of the Earth 4.6 billion years ago to the atmosphere. This should not include any changes as a result of human activity (the increases in carbon dioxide following the industrial revolution).
Correct 6 / 6 PointsIncorrect / 6 Points -
Question 25 of 31Question 25[2 marks]
[question number = 04.3] Why do historical measurements by humans of global temperature have some uncertainty?
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Question 26 of 31Question 26[1 mark]
[question number = 05.1] Which of the following is the chemical test for oxygen?
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Question 27 of 31Question 27[1 mark]
[question number = 05.2] Why is carbon monoxide produced during incomplete combustion?
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Question 28 of 31Question 28[2 marks]
[question number = 05.3] Which of the following are causes of acid rain?
Correct 2 / 2 PointsIncorrect / 2 Points -
Question 29 of 31Question 29[2 marks]
[question number = 06.1] Which of the following points are advantages of recycling?
Correct 2 / 2 PointsIncorrect / 2 Points -
Question 30 of 31Question 30[4 marks]
[question number = 06.2] (short answer) Describe two processes that can be used to extract metals from low-grade ores.
Correct 4 / 4 PointsIncorrect / 4 Points -
Question 31 of 31Question 31[4 marks]
[question number = 06.3] 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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