Mock test. 1 hour and 45 minutes. 95 marks available.
Each time the test is taken it will present different questions.
GCSE OCR Combined Science B Papers 2 and 6
Good Luck!
Results
Well Done you passed the test! You’re on your way to getting the grades you want!
Why not try another Science Mock Exam and see how well you do?
Nice try, check your answers to see where you went wrong.
Why not get a bit more practice with some chemistry quizzes and then come back and have another try!
#1. Do non-metals usually have a high or low density?
#2. How many atoms of potassium (group 1) are needed to bond ionically with oxygen (group 6)?
#3. Which evidence provides information about carbon dioxide concentration and global temperatures?
#4. Do metals usually have a high or low melting point?
#5. What is the name of the process by which salt is removed from water?
#6. A soluble base is called?
#7. 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 → ….. + …..
#8. What state of matter has particles which are close together and move around each other?
#9. Filtration and crystallisation are used to separate which types of materials?
#10. What is the chemical symbol for lithium?
#11. What is the formula for the polyatomic ion carbonate?
#12. When using inert electrodes to perform electrolysis with copper chloride solution, which products will be produced at the anode and cathode?
#13. What is the charge of a proton?
#14. Covalent compounds typically form between which two types of material?
#15. What is the formula for the compound calcium nitrate which is made of calcium and nitrate ions (NO₃⁻)?
#16. What is the equation for Rf values in paper chromatography?
#17. Which types of atoms can be found in a pure piece of gold?
Select all that apply:
#18. What is the formula for the polyatomic ion sulfate?
#19. What is the boiling temperature of water?
#20. Complete the equation: HCl (aq) → H⁺(aq) + …..
#21. Does increasing the pressure of gases increase the rate of reaction?
#22. Match the following description to the correct term. X is a mixture made of dissolved substances in a liquid.
#23. Is it possible to control the rate of reaction?
#24. What is the name of the apparatus used for distillation?
#25. What is the chemical symbol for oxygen?
#26. Why did the concentration of carbon dioxide in the atmosphere decrease after the oceans formed?
#27. Which of the following are commonly used as methods of sterilising fresh water? ? 3
Select all that apply:
#28. Which of the following are the main sources of drinking water in the UK?
Select all that apply:
#29. What is the electronic configuration of a nitrogen atom? ? you might need a periodic table to answer this question
#30. What is the formula for calcium hydroxide?
#31. Fill in the blanks: Oxidation refers to the …… of electrons and it occurs at the ……..
#32. Solutions of less than pH 7 are?
#33. What the the most dense state of matter?
#34. Can compounds be pure, for example, carbon dioxide?
#35. When there are more frequent collisions between particles, what will happen to the rate of reaction?
#36. What is the chemical symbol for phosphorus?
#37. Which of the following items would you need to perform crystallisation by heating? ? 6 items
Select all that apply:
#38. What is the symbol for relative formula mass (also known as relative molecular mass)?
#39. Relative atomic mass used to have a different name. What was that name?
#40. What do group 2 atoms do when they bond with group 6 atoms?
#41. What is the name of the force that holds together ions in ionic compounds?
#42. What is the symbol for relative atomic mass?
#43. Determine the empirical formula for Cyclopentane – C₅H₁₀?
#44. Complete the following equation describing a reaction with a metal and an acid: metal + acid → …. + ….
Select all that apply:
#45. What method can we use to separate multiple types of liquids?
#46. On the early Earth, there was a lot of volcanic activity as the planet was cooling down. How can we link this to the formation of the atmosphere?
#47. Why did the amount of oxygen in the atmosphere increase over time?
#48. Isotopes of atoms have different numbers of which particles?
#49. When using inert electrodes to perform electrolysis with sodium chloride solution, which products will be produced at the anode and cathode?
#50. What is the chemical symbol for calcium?
#51. Which of these reasons explains why temperature affects rate of reaction?
#52. Why does diamond not conduct electricity?
#53. During a neutralisation reaction which salt is formed from nitric acid?
#54. What is the chemical symbol for potassium?
#55. What is the chemical symbol for radium?
#56. How do sodium and chlorine atoms bond? ? you might need a periodic table to answer this question
#57. What is the chemical symbol for hydrogen?
#58. What is the charge of a neutron?
#59. Determine the empirical formula for Cyanuric triazide – C₃N₁₂.
#60. Which of these is a problem with 3D ball and stick models?
#61. Which type of reaction is aerobic respiration?
#62. Which of the following are properties of ionic compounds?
#63. What is the formula for the polyatomic ion nitrate?
#64. What is the evidence supporting the idea that there was very little oxygen in the atmosphere in Earth’s early atmosphere?
Select all that apply:
#65. What is the name of the phase change from liquid to gas?
#66. What is the name of the phase change from solid to gas?
#67. Solutions of pH 7 are?
#68. Chlorine has two stable isotopes, ³⁵Cl (75.77%) and ³⁷Cl (24.23%). Calculate the Aᵣ of chlorine to 2 decimal places.
#69. Which of the following are problems that would arise from measuring an extremely slow rate of reaction?
Select all that apply:
#70. What is the charge of an electron?
#71. Will endothermic reactions continue if there is no energy input?
#72. What temperature is the boiling point of water?
#73. In an experiment to measure the rate of photosynthesis of pondweed in a test tube, the number of bubbles (oxygen) produced per minute is used to determine the rate of reaction. What is this experiment actually measuring?
#74. During crystallisation, there is a risk of spitting which could cause harm. Which of the following could reduce the risk?
Select all that apply:
#75. Alkalis produce an excess of what when they dissolve in water?
#76. Greenhouse effect 1) Fill in the blanks: Energy from the sun in the form of …….. hits the Earth’s surface and ……. are emitted back towards the atmosphere.
#77. What is the chemical symbol for chlorine?
#78. What are negative ions called?
#79. What type of substance is pure gold (Au)?
#80. What is an electrolyte?
#81. What is the chemical symbol for iron?
#82. Fill in the blanks: Electrolysis is a process in which ………. energy from a ………. current supply is used to decompose electrolytes.
#83. What is the name of the phase change from gas to solid?
#84. Increasing the concentration of solutions increases the rate of reaction, why is this the case?
#85. Which of the following descriptions matches the Aᵣ of an element?
#86. What is the chemical symbol for iodine?
#87. After filtering a mixture containing sand, salt and water using filter paper. What do we call what is left in the filter paper?
#88. Which processes can we use for purifying sea water?
Select all that apply:
#89. What is the relative mass of a proton?
#90. What type of substance is carbon dioxide (CO₂ )?
#91. What does the atomic number of an element mean?
#92. Why is graphite softer than diamond?
