Mock test. 1 hour and 45 minutes. 100 marks available.
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GCSE AQA Combined Science Synergy Paper 4
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#1. The potential danger associated with an electromagnetic wave increases with?
#2. Complete the sentence: In the UK the domestic electricity supply has a frequency of ... Hz and is about ..... V.
#3. What wavelength of the electromagnetic spectrum is useful for sterilising food and medical equipment?
#4. Which type of reaction is aerobic respiration?
#5. Displacement reactions sometimes occur between a metal and a compound of a less reactive metal. Are these reactions endothermic or exothermic?
#6. Do metals usually have a high or low melting point?
#7. What is graphene?
#8. Calculate the total momentum after two objects collide. Object A has a momentum of 20 kg m/s and Object B has a momentum of -15 kg m/s. Include the units "kg m/s" in your answer.
#9. Which of the following is a disadvantage of tidal energy generation?
#10. If a car experiences a resultant force in the forwards direction, what will happen to the motion of the car?
#11. Magnets have north and south poles - if north and south poles are put close together what will happen?
#12. Complete the following equation describing a neutralisation reaction with a metal oxide: metal oxide + acid → .... + ....
Select all that apply:
#13. Copper is a magnetic material - true or false?
#14. What is the chemical symbol for helium?
#15. Is mass a vector or a scalar?
#16. What is amplitude?
#17. What do we call energy that is stored inside atoms?
#18. In aqueous solutions such as sodium chloride solution, there will be positively charged ions from the salt (Na⁺) as well as hydrogen ions (H⁺). What is the rule that determines which will be discharged at the cathode.
#19. Overexposure to ultraviolet light could cause which of the following problems?
#20. Complete the sentence: Stopping distances are made up of the sum of braking distance and ........ distance.
#21. What is the formula for sodium hydroxide?
#22. Since metallically bonded atoms have a delocalised pool of electrons, these electrons are able to conduct ......
Select all that apply:
#23. Acceleration is an increase in the rate of what?
#24. What is happening to the speed of the object in the graph between 0 and 8 seconds?
#25. What wavelength of the electromagnetic spectrum is useful for cooking?
#26. Which of the following equations correctly describes the relationship between force and change in momentum (Newton's Second Law)
#27. How is gravitational potential energy stored?
#28. Determine the speed of the object between 1 and 3 seconds. ? answer to 2 decimal places
#29. Is acceleration a vector or a scalar?
#30. Is energy a vector or a scalar?
#31. When using inert electrodes to perform electrolysis with water acidified with sulfuric acid, which products will be produced at the anode and cathode?
#32. Which of the following is the source of oil and gas?
#33. Which of the following is an advantage of crude oil?
#34. Why is there a minimum energy required for reactions to occur?
#35. What is the formula for the polyatomic ion ammonium?
#36. Which of the following descriptions matches the term empirical formula?
#37. Is tidal power renewable?
#38. Which of the following are problems that would arise from measuring an extremely slow rate of reaction?
Select all that apply:
#39. What is the chemical symbol for iron?
#40. The force on a conductor carrying current at right angles to a magnetic field is expressed by which of the following equations?
#41. What is this component?
#42. What is Newton's First Law of Motion?
#43. A student sets up a series circuit that has two filament lamps, a power source and a switch after the first lamp. Can the first lamp be turned off whilst keeping the second lamp on?
#44. Fractional distillation is used to separate which types of materials?
#45. True or False - Vector quantities only have magnitude?
#46. Copper can be purified using electrolysis of copper sulfate solution. For this process we use the setup in the image below. Complete the half equation for the reaction at the anode. Cu → ..... + .....
#47. What wavelength of the electromagnetic spectrum has the most energy?
#48. Is solar power renewable?
#49. What is period?
#50. When using inert electrodes to perform electrolysis with molten lead bromide, which products will be produced at the anode and cathode?
#51. What is the function of a fuse?
#52. During a neutralisation reaction which salt is formed from hydrochloric acid?
#53. What is the chemical symbol for nitrogen?
#54. Neutralisation reactions which occur between an acid and a base are always:
#55. Calculate the force when an object changes its momentum by 2550 kg m/s in 5 seconds. Include the units for force in your answer.
#56. For circular motion to take place there must be a resultant force that acts towards the centre of the circle. What is the name of this force?
#57. What is the function of a switch?
#58. If a current travelling along a wire changes direction, does the magnetic field also change direction?
#59. Do non-metals usually have a high or low density?
#60. Match the following description to the correct term. X is a mixture made of dissolved substances in a liquid.
#61. Using the equation F = MA - calculate the force of a ball with a mass of 15kg that is accelerated at 2m/s²?
#62. Do metals usually have a high or low density?
#63. Does increasing the pressure of gases increase the rate of reaction?
#64. Which of these best describes metallic bonding?
#65. When a mixture of rocks, salt and water is filtered, what will be the residue?
#66. Cobalt is a magnetic material - true or false?
#67. What is a simple molecular structure?
#68. What wavelength of the electromagnetic spectrum is useful for communications?
#69. Calculate the distance travelled by the runner in the velocity/time graph.
The area under the graph = distance travelled
Split the graph into triangles and rectangles and calculate the areas. Then add together the areas.
Area of a rectangle = Length x Height
Area of a triangle = 1/2 x Length x Height
90m 120m 180m = 390m
NOTE: the graph starts at one second and not 0. Don’t be fooled, look at the axes carefully before attempting a question.
#70. Is nuclear fission a fossil fuel?
#71. Electrons are negatively charged, so they move to which terminal of a battery or cell?
#72. Is velocity a vector or a scalar?
#73. Which type of reaction is photosynthesis?
#74. Solutions of less than pH 7 are?
#75. Energy can be transferred to useful and non-useful forms. Which of the following are non-useful transfers of energy?
Select all that apply:
#76. Which of the following can affect braking distances? ? 5
Select all that apply:
#77. What is the chemical symbol for fluorine?
#78. Is this a parallel or series circuit?
#79. How is renewable energy usage changing as a percentage of total energy production worldwide?
#80. How is fossil fuel usage changing as a percentage of total energy production worldwide?
#81. Which device can you use to find the direction of a magnetic field?
#82. Complete the following equation: MgO (s) + H₂SO₄ (aq) → .... + ....
Select all that apply:
Neutralisation reactions follow the general structure –
metal oxide acid = salt water
the acid produces hydrogen ions and the metal oxide produces oxide ions – these combine to make the water
the salt is comprised of the remaining products – the metal and the other element from the acid
in this case, the other element is chlorine
The naming convention is to put the metal first for the salt created
#83. Acids produce an excess of what when they dissolve in water?
#84. What is current measured in?
#85. Which type of reaction takes in energy, making the surroundings cooler?
#86. Calculate the acceleration of the object in the graph between 5 and 6 seconds.
This is a straight-line graph.
Calculate the gradient of a straight-line graph using the following:
y₂ – y₁ / x₂ – x₁
30-20/6-5 = 10m/s²
This is the same as a simpler version:
Rise/run
or vertical distance / horizontal distance
#87. Which of the following is a disadvantage of wind energy generation?
#88. What do we call energy that is stored in twisted or stretched materials?
#89. How many sulfur atoms will react with two lithium atoms to form an ionic compound?
#90. True or false - Precipitation reactions can be either exothermic or endothermic.
#91. Is wind power renewable?
#92. Are most light waves visible to the human eye?
#93. Why are metals good conductors?
#94. What do group 2 atoms do when they bond with group 6 atoms?
#95. Which of the following can be used to measure reaction times?
Select all that apply:
#96. Magnets can attract magnetic materials - true or false?
#97. Why do both graphite and diamond have high melting points?
#98. What is the chemical symbol for magnesium?
#99. What is this component?
#100. If a car is moving but the forces are balanced - what will happen to the speed of the car?
finish