OCR Combined Science B Papers 4 and 8 Automock

#1. Is velocity a vector or a scalar?

vector

scalar

#2. What is the difference in concentration between pH 6 and pH 4?

100x

10,000x

1x

1000x

10x

#3. What is the formula for the polyatomic ion hydroxide?

NO₃⁻

SO₄²⁻

NH₄⁺

CO₃²⁻

SO₃²⁻

OH⁻

#4. Why is magnesium a better electrical conductor than sodium?

Group 1 sodium is less electrically conductive because it quickly forms impurities that prevent efficient conduction

Group 2 magnesium has two spare electrons to donate to the delocalised pool, whereas, sodium atoms only have one electron to donate. This means there are more electrons to carry the charge

#5. What wavelength of the electromagnetic spectrum is useful for security marking?

visible light

gamma rays

ultraviolet light

microwaves

infrared

x-rays

radiowaves

#6. How can electrons change orbits?

by absorbing electromagnetic radiation

randomly changing orbits

being struck by a proton

#7. Which of these is a problem with 3D ball and stick models?

The model does not show that the ions will be constantly vibrating

They do not show how the structure formed and suggest that the electrons in different atoms are different, but they are actually the same

The model shows the atoms as being too far apart and there are no sticks

#8. What is the symbol for relative formula mass (also known as relative molecular mass)?

Mᵣ

MAᵣ

Aᵣ

Hᵣ

#9. Complete the sentence: In the UK the domestic electricity supply has a frequency of … Hz and is about ….. V.

10, 130

50, 25

30, 230

50, 230

#10. Which of the following is a disadvantage of wind energy generation?

wind turbines are intermittent

wind turbines can occasionally cause earthquakes

wind turbines are prone to falling over in high winds

#11. What does E represent in the equation for work done?

Power

Elasticity

Distance moved

Work done

#12. What is the resolution of light microscopes limited by?

The wavelength of visible light

The strength of magnification

The size of the mirror/intensity of the light source

#13. Which system is responsible for ensuring the supply of oxygen and glucose to cells?

Immune System

Circulatory System

Nervous System

#14. Where does blood entering the heart through the pulmonary veins come from?

The lungs

The brain

The lower body

#15. Which structures in the lungs increase the surface area and therefore the speed and amount of gas exchanged?

#16. Why are metals good conductors?

Electrons in the outermost shell of metals are free to move

The atoms in metals are much closer together than non-metals and the electrons are able to jump the small distance between electron shells

Electrons in metals have a 2- charge, giving them more available charge for conducting electricity

#17. Which three particles are atoms composed of?

#18. Why does graphite conduct electricity?

Because it has only three covalent bonds, leaving one delocalised electron from each atom. These electrons are able to carry the charge.

Because it has more protons than electrons, this gives it a positive charge and enables it to carry a charge

#19. What is the gap between neurones called?

#20. What is the definition of resolution?

The smallest distance between two points that can be distinguished as separate

The furthest away you can be from the eyepiece lens and still see a clear image

The largest distance between two points that can be distinguished as separate

#21. Complete the equation used to calculate population size: population size = ………….. x total size of it habitat / total area of quadrats

population size = number of organisms in all quadrats x total size of community / total area of quadrats

population size = number of organisms in one quadrat x total size of habitat / total area of quadrats

population size = number of organisms in all quadrats x total size of habitat / total area of quadrats

#22. What effect does adrenaline have on the liver?

Causes a spike in growth hormone

Causes the breakdown of glycogen to release glucose

Causes a decrease in blood sugar concentration

#23. Which of the following is the correct word equation for aerobic respiration?

carbon dioxide + oxygen = water + energy + glucose

oxygen + glucose = carbon dioxide + water + energy

nitrogen dioxide + carbon dioxide = water + energy

#24. What is graphene?

Graphene is a layer of graphite that is one atom thick

Graphene is the material that forms from the covalent bonding of oxygen and nitrogen

Graphene is a small section of a diamond

#25. Which of the following features are found in veins?

Thick elastic walls made from muscle fibres

One cell thick walls

Narrow lumen (inside diameter of tube)

Thin flexible walls

Wide lumen (inside diameter of tube)

#26. Is this a parallel or series circuit?

Series

Parallel

#27. What is the role of amylase?

breaks down fats in the diet

breaks down hydrogen peroxide made during cell reactions

synthesises glycogen from glucose

synthesises starch from glucose

breaks down proteins in the diet

breaks down starch to small sugars such as maltose

synthesises DNA from its monomers

#28. Specialised cells have different compositions of sub cellular structures in order to perform their role. Why would specialised cells have lots of mitochondria?

the cells need to get instructions for growth from the mitochondria

the cells need to perform photosynthesis

the cells need lots of energy

#29. How much of the atmosphere is composed of nitrogen?

approximately 80%

approximately 10 %

approximately 50%

#30. Strong acids do what in water? ? two words

#31. Aluminium is a magnetic material – true or false?

false

true

#32. Which of the following are 3 of the adaptations of leaves for efficient photosynthesis?

Select all that apply:

Leaves have stomata - for gaseous exchange

Large leaves - bigger surface area

Flat leaves - reduces distance for diffusion of gases

Root hair cells are thin and very numerous - increasing surface area

Leaves retract inside stems overnight - avoiding water loss

Remember to carefully read the question, if you selected Root hair cells, you were mistaken because the question asked about leaves, not roots.

#33. What is the charge of an electron?

-1

0

+1

#34. What is the shortest wavelength of electromagnetic radiation

radiowaves

microwaves

x-rays

infrared

gamma rays

visible light

ultraviolet light

#35. Using the kinetic energy equation – calculate the kinetic energy of a car with a mass of 1200kg travelling at 10 m/s. Include units. ? If you do not remember the kinetic energy equation it is listed below the quiz.

#36. What are positrons?

an electron

high frequency electromagnetic radiation

an antimatter particle equivalent to an electron

two protons and two neutrons but no electrons

#37. Is oil renewable?

yes

no

partially

#38. What is the role of protease?

breaks down proteins in the diet

synthesises glycogen from glucose

breaks down fats in the diet

breaks down starch to small sugars such as maltose

synthesises DNA from its monomers

synthesises starch from glucose

breaks down hydrogen peroxide made during cell reactions

#39. A bar magnet is a permanent magnet – what does that mean?

it is a magnet most of the time

it is always magnetic

it is a very strong magnet

it is only temporarily magnetic

#40. What is this Sankey Diagram showing?

Inputs and outputs of energy and their forms, e.g. thermal energy

What the ideal energy transfer looks like for a particular system

How internal combustion engines work

#41. Which geological process formed Earth’s atmosphere?

Continental drift

Glaciation

Volcanism

Earthquakes

#42. What are the monomers of proteins?

chloroplasts

fatty acids

amino acids

carbohydrates

nucleotides

mitochondria

DNA

#43. Which description most accurately describes osmosis?

diffusion of fluid through a semipermeable membrane from a solution with a low solute concentration to a solution with a higher solute concentration

The movement of a chemical substance through a concentration gradient in the direction opposite to normal diffusion requiring the expenditure of energy

the process by which particles move from high concentration to low concentration or with the concentration gradient

#44. Calculate the change in momentum of an object that experiences a force of 350 N over 15 s. Include the units “kg m/s” in your answer

#45. Is water an example of a covalent compound?

Yes

No

#46. Are metals usually good conductors of heat?

No

Yes

#47. What is this component?

#48. Can Rf values be higher than 1?

Under certain conditions

Yes

No

#49. H₂SO₄(aq) + Na₂O(s) → …. + ….

Select all that apply:

MgOH

H₂O (l)

NaOH

2H₂O (l)

Na₂SO₄(aq)

#50. True or false – A concentration gradient is a term used to explain how the moon moves in the night sky?

true

false

#51. The water cycle has one part where water is in solid form – what is that form of storage?

clouds

groundwater

glaciers and icesheets

oceans

#52. What is this component?

#53. What is the equation for kinetic energy?

KE = 1/2 x mass x speed²

KE = 2.5 x mass x speed²

1

KE = mass x speed x time²

#54. Why is there a minimum energy required for reactions to occur?

High energies cause spontaneous rearrangement of particles without impacts between them

High collision energies are more likely to break chemical bonds

#55. True or false. All atoms of the same element have the same atomic number.

True

False

#56. What is the correct order of groups in the Linnaean Classification system?

Family Genus Species Phylum Kingdom Class Order

Kingdom Class Order Family Genus Species Phylum

Kingdom Phylum Class Order Family Genus Species

Remember:

King Prawn Curry is the Only Food that Gives Satisfaction

#57. Fractional distillation is used to separate which types of materials?

separate different types of liquids

separating soluble compounds

separate soluble materials from insoluble materials

#58. Nickel is a magnetic material – true or false?

false

true

#59. What is the source of energy for the sun?

nuclear fission

hydrocarbons

nuclear fusion

#60. Calculate the change in height of the tennis ball in the following scenario. A ball weighs 0.15kg – the change in GPE is 100 J – the gravitational field strength is 10N/kg. Answer to 1dp and include units. ? If you do not know the GPE equation, it is listed below the quiz

#61. Which of the following is an advantage of using nuclear fission power plants?

They are very simple technologies

They do not produce air pollution or greenhouse gases

They are cheap to manufacture and operate

#62. Is solar power renewable?

yes

no

partially

#63. Which sub-cellular structures can be found in plants?

Select all that apply:

Cell membrane

Chloroplasts

Ribosomes

Nucleus

Chromosomal DNA

Cytoplasm

Vacuole

Mitochondria

Cell wall

Plasmid

#64. When moving from air to glass, what will happen to a wave’s speed?

It will speed up

It will stay the same

It will slow down

#65. Respiration from animals is a source of carbon dioxide in the atmosphere – do plants also use respiration?

yes

only carnivorous plants perform respiration

no

#66. Are metals usually shiny or dull in colour?

shiny

dull

#67. Conventional current goes from:

Positive terminal to negative terminal

Negative terminal to positive terminal

#68. Find the volume of a silver block that has a mass of 159g and a density of 10.49 g/cm³. Give your answer in cm³ and to 1 decimal place.

#69. What is the function of an LED?

measures current

gives power to a circuit

safety component which can break a faulty circuit

makes or breaks a circuit

releases light

two or more cells in a circuit

provides a constant resistance

allows current to only flow one way

measures potential difference

provides variable resistance

#70. What is potential difference measured in?

Ohms

Volts

Amperes or Amps

Coulombs

#71. Greenhouse effect 2) Fill in the blanks: Greenhouse gases such as ……….. , …………. and ……….. absorb infrared radiation from the Earth and re-emit it back to the Earth’s surface, causing warming.

Carbon dioxide, oxygen and water vapour

Carbon dioxide, methane and water vapour

Carbon dioxide, water vapour and nitrogen

#72. What is the current composition of the Earth’s atmosphere?

78% carbon dioxide, 21% oxygen, 0.9% argon, and 0.1% other gases

78% oxygen, 21% nitrogen, 0.9% argon, and 0.1% other gases

78% nitrogen, 21% oxygen, 0.9% argon, and 0.1% other gases

#73. What is the formula for calcium hydroxide?

Ca(OH)₂

NaOH

HNO₃

H₂SO₄

HCL

KOH

#74. Why is graphite softer than diamond?

Graphite is actually harder than diamond

Graphite is softer because the covalent bonds are weaker between atoms of carbon in graphite than in diamond

Graphite is arranged in sheets with weak intermolecular forces holding them together. These can easily slide, making graphite soft.

#75. What is the name of the phase change from gas to solid?

evaporation/boiling

deposition

melting

sublimation

condensation

freezing

GCSE OCR Combined Science B Papers 1 and 5

Good Luck!

Results

#1. Is velocity a vector or a scalar?

#2. What is the difference in concentration between pH 6 and pH 4?

#3. What is the formula for the polyatomic ion hydroxide?

#4. Why is magnesium a better electrical conductor than sodium?

#5. What wavelength of the electromagnetic spectrum is useful for security marking?

#6. How can electrons change orbits?

#7. Which of these is a problem with 3D ball and stick models?

#8. What is the symbol for relative formula mass (also known as relative molecular mass)?

#9. Complete the sentence: In the UK the domestic electricity supply has a frequency of … Hz and is about ….. V.

#10. Which of the following is a disadvantage of wind energy generation?

#11. What does E represent in the equation for work done?

#12. What is the resolution of light microscopes limited by?

#13. Which system is responsible for ensuring the supply of oxygen and glucose to cells?

#14. Where does blood entering the heart through the pulmonary veins come from?

#15. Which structures in the lungs increase the surface area and therefore the speed and amount of gas exchanged?

#16. Why are metals good conductors?

#17. Which three particles are atoms composed of?

#18. Why does graphite conduct electricity?

#19. What is the gap between neurones called?

#20. What is the definition of resolution?

#21. Complete the equation used to calculate population size: population size = ………….. x total size of it habitat / total area of quadrats

#22. What effect does adrenaline have on the liver?

#23. Which of the following is the correct word equation for aerobic respiration?

#24. What is graphene?

#25. Which of the following features are found in veins?

#26. Is this a parallel or series circuit?

#27. What is the role of amylase?

#28. Specialised cells have different compositions of sub cellular structures in order to perform their role. Why would specialised cells have lots of mitochondria?

#29. How much of the atmosphere is composed of nitrogen?

#30. Strong acids do what in water? ? two words

#31. Aluminium is a magnetic material – true or false?

#32. Which of the following are 3 of the adaptations of leaves for efficient photosynthesis?

#33. What is the charge of an electron?

#34. What is the shortest wavelength of electromagnetic radiation

#35. Using the kinetic energy equation – calculate the kinetic energy of a car with a mass of 1200kg travelling at 10 m/s. Include units. ? If you do not remember the kinetic energy equation it is listed below the quiz.

#36. What are positrons?

#37. Is oil renewable?

#38. What is the role of protease?

#39. A bar magnet is a permanent magnet – what does that mean?

#40. What is this Sankey Diagram showing?

#41. Which geological process formed Earth’s atmosphere?

#42. What are the monomers of proteins?

#43. Which description most accurately describes osmosis?

#44. Calculate the change in momentum of an object that experiences a force of 350 N over 15 s. Include the units “kg m/s” in your answer

#45. Is water an example of a covalent compound?

#46. Are metals usually good conductors of heat?

#47. What is this component?

#48. Can Rf values be higher than 1?

#49. H₂SO₄(aq) + Na₂O(s) → …. + ….

#50. True or false – A concentration gradient is a term used to explain how the moon moves in the night sky?

#51. The water cycle has one part where water is in solid form – what is that form of storage?

#52. What is this component?

#53. What is the equation for kinetic energy?

#54. Why is there a minimum energy required for reactions to occur?

#55. True or false. All atoms of the same element have the same atomic number.

#56. What is the correct order of groups in the Linnaean Classification system?

#57. Fractional distillation is used to separate which types of materials?

#58. Nickel is a magnetic material – true or false?

#59. What is the source of energy for the sun?

#60. Calculate the change in height of the tennis ball in the following scenario. A ball weighs 0.15kg – the change in GPE is 100 J – the gravitational field strength is 10N/kg. Answer to 1dp and include units. ? If you do not know the GPE equation, it is listed below the quiz

#61. Which of the following is an advantage of using nuclear fission power plants?

#62. Is solar power renewable?

#63. Which sub-cellular structures can be found in plants?

#64. When moving from air to glass, what will happen to a wave’s speed?

#65. Respiration from animals is a source of carbon dioxide in the atmosphere – do plants also use respiration?

#66. Are metals usually shiny or dull in colour?

#67. Conventional current goes from:

#68. Find the volume of a silver block that has a mass of 159g and a density of 10.49 g/cm³. Give your answer in cm³ and to 1 decimal place.

#69. What is the function of an LED?

#70. What is potential difference measured in?

#71. Greenhouse effect 2) Fill in the blanks: Greenhouse gases such as ……….. , …………. and ……….. absorb infrared radiation from the Earth and re-emit it back to the Earth’s surface, causing warming.

#72. What is the current composition of the Earth’s atmosphere?

#73. What is the formula for calcium hydroxide?

#74. Why is graphite softer than diamond?

#75. What is the name of the phase change from gas to solid?

Quick Links

Services