Properties of materials: OCR GCSE Chemistry A questions

Every OCR GCSE Chemistry A exam question on C2.3 Properties of materials, 2018–2025, with its mark scheme and examiner’s report.

All 138 questions on Properties of materials, as a list

June 2025, Paper 1 Foundation, Q19(a) (3 marks): The table shows some information about three different metals. Metal Resistance to corrosion Relative strength Density A low high high B high low medium C very
June 2025, Paper 1 Foundation, Q19(b)(i) (2 marks): Explain why alloys are harder than metals. You can include a labelled diagram to support your answer. Optional diagram: [2]
June 2025, Paper 1 Foundation, Q19(b)(ii) (4 marks): Steel alloys can be used to make tools. A sample of tool steel contains 0.17 g of carbon and 7.73 g of iron. Calculate the percentage of carbon in this alloy. G
June 2025, Paper 1 Foundation, Q22(a) (2 marks): The table shows the diameters of four different particles. Particle Diameter (nm) A 97 B 2100 C 11 D 0.73 Which two particles are nanoparticles? and Explain you
June 2025, Paper 1 Foundation, Q22(b)(i) (2 marks): One use of nanoparticles is in medicines. State one other use of nanoparticles. Explain why they can be used for that purpose. Use Explanation [2]
June 2025, Paper 1 Foundation, Q22(b)(ii) (2 marks): Some scientists are worried about the risks of using nanoparticles. Which statements are risks to humans of using nanoparticles? Tick (✓) two boxes. They can bl
June 2025, Paper 1 Foundation, Q22(c) (3 marks): A cube-shaped nanoparticle has sides of length 10 nm. 10 nm 10 nm 10 nm Calculate the surface area to volume ratio of the cube. Use the equation: Surface area t
June 2025, Paper 3 Higher, Q16(a) (2 marks): The table shows the diameters of four different particles. Particle Diameter (nm) A 97 B 2100 C 11 D 0.73 Which two particles are nanoparticles? and Explain you
June 2025, Paper 3 Higher, Q16(b)(i) (2 marks): One use of nanoparticles is in medicines. State one other use of nanoparticles. Explain why they can be used for that purpose. Use Explanation [2]
June 2025, Paper 3 Higher, Q16(b)(ii) (2 marks): Some scientists are worried about the risks of using nanoparticles. Which statements are risks to humans of using nanoparticles? Tick (✓) two boxes. They can bl
June 2025, Paper 3 Higher, Q16(c) (3 marks): A cube-shaped nanoparticle has sides of length 10 nm. 10 nm 10 nm 10 nm Calculate the surface area to volume ratio of the cube. Use the equation: Surface area t
June 2025, Paper 3 Higher, Q20 (6 marks): 20* This question is about structure and bonding. The table shows some information about three different substances. Melting Boiling Substance Conducts electric
June 2025, Paper 3 Higher, Q21(a) (2 marks): Draw lines to connect each allotrope structure with its correct name. Allotrope structure Name Buckminsterfullerene Graphene Nanotube [2]
June 2025, Paper 3 Higher, Q21(b)(i) (2 marks): Explain why graphite conducts electricity. [2]
June 2025, Paper 3 Higher, Q21(b)(ii) (2 marks): Explain why graphite has a high melting point. Use ideas about structure and bonding in your answer. [2]
June 2024, Paper 1 Foundation, Q21(c) (2 marks): The diagram shows the structure of diamond. Explain why diamond cannot conduct electricity. [2]
June 2024, Paper 1 Foundation, Q21(d)(i) (2 marks): Which form of carbon should you choose to use as an electrode in an electrolysis experiment with a molten electrolyte? Explain your answer. Form of carbon Reaso
June 2024, Paper 2 Foundation, Q15 (1 mark): What happens when liquid bromine, Br2, boils? A Covalent bonds break B Electrostatic forces break C Intermolecular forces break D Ionic bonds break Your answer
June 2024, Paper 3 Higher, Q1 (1 mark): Which property is characteristic of a metal? A It forms acidic oxides. B It is brittle. C It is malleable. D It reacts with acid to form carbon dioxide gas. You
June 2024, Paper 3 Higher, Q2 (1 mark): Graphite and graphene are allotropes of carbon. Which statement is correct about graphite and graphene? A Graphite has delocalised electrons, graphene uses all
June 2024, Paper 3 Higher, Q21(a) (6 marks): (a)* The structures of diamond, chlorine, Cl 2, and poly(ethene) are shown. Chlorine, Cl2 Diamond Poly(ethene) All the substances contain covalent bonds between
June 2024, Paper 3 Higher, Q21(b)(i) (3 marks): Magnesium chloride is an ionic compound. Explain why ionic compounds can conduct electricity when dissolved in water, but not when solid. [3]
June 2024, Paper 4 Higher, Q2 (1 mark): What happens when liquid bromine, Br2, boils? A Covalent bonds break B Electrostatic forces break C Intermolecular forces break D Ionic bonds break Your answer
June 2023, Paper 1 Foundation, Q11 (1 mark): Why are nanoparticles useful as catalysts in chemical reactions? A Nanoparticles are a new technology. B Nanoparticles have a high surface area to volume ratio.
June 2023, Paper 1 Foundation, Q18(d)(i) (1 mark): What is the diameter of the carbon nanotube in nanometres? [1]
June 2023, Paper 1 Foundation, Q18(d)(ii) (2 marks): Fig. 18.4 shows a model of the structure and bonding in graphite. Fig. 18.4 Explain why the carbon nanotube is stronger than graphite. Use Fig. 18.3 and Fig. 18
June 2023, Paper 1 Foundation, Q18(d)(iii) (2 marks): A hydrogen atom has a diameter of 2.4 × 10–10 m. Calculate how many times larger the carbon nanotube is than the hydrogen atom. Number of times larger = [2]
June 2023, Paper 1 Foundation, Q19(a) (6 marks): The table shows the type of bonding in three substances. Substance Type of bonding simple molecular Bromine, Br2 (covalent) Sodium chloride, NaCl ionic Diamond,
June 2023, Paper 1 Foundation, Q19(b)(i) (2 marks): Explain why a metal alloy is harder than a metal element. [2]
June 2023, Paper 1 Foundation, Q19(b)(ii) (3 marks): In medicine, titanium alloys are used in hip replacements. The table shows some properties of alloys. Tensile strength is the amount of load a material can take
June 2023, Paper 2 Foundation, Q17(a) (2 marks): Which element is a non‑metal? Give a reason for your answer. Element Reason [2]
June 2023, Paper 3 Higher, Q3 (1 mark): A carbon nanotube is 1.4 × 10–9 m wide. A human hair is 1.4 × 10–4 m wide. 3 How many times wider is the hair compared to the nanotube? A 100 B 1000 C 10 000 D
June 2023, Paper 3 Higher, Q11 (1 mark): Which row explains how the structure of graphene is different from the structure of graphite? Graphene Graphite A 3 covalent bonds to each carbon atom 4 covalen
June 2023, Paper 3 Higher, Q20(c)(iv) (2 marks): Explain why magnesium sulfate has a high melting point. [2]
June 2023, Paper 3 Higher, Q21(c) (3 marks): Fig. 21.2 shows an electrical cable. Fig. 21.2 Part A Part B Which substance from Table 21.1 would be best to use to make each part of the electrical cable? Exp
June 2022, Paper 1 Foundation, Q3 (1 mark): Which substance has four covalent bonds to each carbon atom? A Carbon nanotubes B Diamond C Graphene D Graphite Your answer [1]
June 2022, Paper 1 Foundation, Q13 (1 mark): Which particles are smaller than 1 × 10–9 m? A Nanoparticles, molecules and atoms B Nanoparticles, neutrons and electrons C Neutrons, atoms and electrons D Neut
June 2022, Paper 1 Foundation, Q18(a)(i) (2 marks): The scientist thinks substance A is an ionic compound. Explain why the scientist is correct. [2]
June 2022, Paper 1 Foundation, Q18(a)(ii) (3 marks): Which of the substances is a simple covalent compound? Explain your answer. Substance Reason 1 Reason 2 [3]
June 2022, Paper 1 Foundation, Q18(b)(ii) (1 mark): Explain why metals are malleable. [1]
June 2022, Paper 1 Foundation, Q18(b)(iii) (2 marks): Explain why metals can conduct electricity. [2]
June 2022, Paper 1 Foundation, Q18(b)(iv) (2 marks): The scientist has a diagram of one type of metal alloy as shown. = Lead atom = Tin atom What is the smallest ratio of lead to tin in the alloy? Ratio of lead to
June 2022, Paper 1 Foundation, Q18(b)(v) (1 mark): The table shows data about other alloys made from tin, copper and silver. Alloy 1 Alloy 2 Alloy 3 Tin content (%) 95.5 99.0 96.5 Copper content (%) 0.7 0.7 0.5
June 2022, Paper 1 Foundation, Q19(a)(i) (1 mark): What is the size of a nanoparticle? Tick (3) one box. Less than 1 nm Between 1 and 100 nm Between 100 and 1000 nm Greater than 1000 nm [1]
June 2022, Paper 1 Foundation, Q19(a)(ii) (2 marks): Some people think using nanoparticulate materials is dangerous. Other people want to keep using them. State one advantage and one disadvantage of using nanopart
June 2022, Paper 2 Foundation, Q19(a) (2 marks): A student thinks that aluminium would be the best metal to use to make a model helicopter. Explain why the student is correct. Use information from the table. [
June 2022, Paper 2 Foundation, Q19(b) (3 marks): The wire inside the cable used to charge a mobile phone is made of a metal. Which of the three metals would you choose to make the wire inside the cable used to
June 2022, Paper 2 Foundation, Q19(c) (2 marks): Poly(chloroethene) is a polymer used to make gutters. Poly(chloroethene) has a melting point of 165 °C. The melting point of aluminium is 660 °C. Calculate the
June 2022, Paper 3 Higher, Q6 (1 mark): Which statement about carbon allotropes is correct? A Buckminsterfullerene is a type of carbon nanotube. B Carbon atoms in diamond and graphite form 4 covalent
June 2022, Paper 3 Higher, Q15 (1 mark): An alloy that contains silver, copper and tin has 96% tin and 2.5% copper. The rest is silver. What is the mass of silver in 12.0 g of the alloy? A 0.18 g B 0.3
June 2022, Paper 3 Higher, Q20(b)(ii) (1 mark): Brass is also a mixture of different substances combined in exact amounts. What type of substance is brass? Tick (3) one box. Allotrope Alloy Fullerene Isotope
June 2022, Paper 3 Higher, Q21(b)(i) (2 marks): Complete the table. [2]
June 2022, Paper 3 Higher, Q21(b)(ii) (3 marks): Put a ring around the compound with the weakest intermolecular forces. Phosphorus trichloride Phosphorus pentachloride Phosphorus trifluoride Explain your answe
June 2022, Paper 3 Higher, Q21(b)(iii) (2 marks): The scientist thinks phosphorus trichloride is a giant covalent compound. Explain why the scientist is incorrect. [2]
June 2022, Paper 3 Higher, Q22(b)(ii) (3 marks): Zinc bromide can conduct electricity when aqueous or molten, but not when solid. Zinc metal can conduct electricity when solid. Explain why. Zinc bromide Zinc m
June 2022, Paper 3 Higher, Q22(c)(i) (1 mark): Which particles are nanoparticles? Tick (3) two boxes. A B C D [1]
June 2022, Paper 3 Higher, Q22(c)(ii) (3 marks): A scientist wants to buy some zinc oxide particles to use in suncream. A large surface area to volume ratio is important. Which particle, A, B, C or D, would be
November 2021, Paper 1 Foundation, Q7 (1 mark): Steel is a mixture of iron and carbon. What is the name of this type of mixture? A Alloy B Ion C Isotope D Molecule Your answer [1]
November 2021, Paper 1 Foundation, Q14 (1 mark): Quantum dots are a type of nanoparticle. Quantum dots can have a diameter of 6 nm. What is 6 nm in metres? 6 × 10-6 m A 6 × 10-8 m B 6 × 10-9 m C 6 × 10-10 m D
November 2021, Paper 1 Foundation, Q20(a) (2 marks): Which nanoparticle will be the best catalyst? Give a reason for your answer. Nanoparticle Reason [2]
November 2021, Paper 1 Foundation, Q20(b)(i) (2 marks): Calculate the surface area of nanoparticle D. Surface area = nm2 [2]
November 2021, Paper 1 Foundation, Q20(b)(ii) (2 marks): The volume of nanoparticle D is 8 nm3. Use your answer to question (b)(i) to calculate the surface area to volume ratio of nanoparticle D. Use the equation, rat
November 2021, Paper 1 Foundation, Q20(c) (1 mark): It is possible to use nanoparticles to transport medication inside the body. Explain why nanoparticles are not yet widely used for this purpose. [1]
November 2021, Paper 1 Foundation, Q21(d) (2 marks): Which statements about lithium fluoride are correct? Tick (✓) two boxes. Lithium fluoride has weak intermolecular forces. Lithium fluoride can conduct electrici
November 2021, Paper 1 Foundation, Q22(a) (2 marks): Complete the table to show how many covalent bonds carbon forms in these allotropes. [2]
November 2021, Paper 1 Foundation, Q22(b)(i) (2 marks): Diamond can be used as a cutting tool because it is so hard. Explain why diamond is so hard. Use ideas about structure and bonding in diamond in your answer. [2
November 2021, Paper 1 Foundation, Q22(b)(ii) (2 marks): Graphite can be used as a lubricant because it is slippery. Explain why graphite is slippery. Use ideas about structure and bonding in graphite in your answer.
November 2021, Paper 1 Foundation, Q23(c) (3 marks): Draw lines to connect each substance with its correct type of structure and bonding. Giant Covalent Substance M Ionic Metallic Substance O Polymer Substance P S
November 2021, Paper 2 Foundation, Q2 (1 mark): The diagram shows the copper wires in a plug. Why is this wire made of copper? A Copper conducts electricity. B Copper conducts heat. C Copper is hard. D Copper
November 2021, Paper 2 Foundation, Q15 (1 mark): Butane is a hydrocarbon molecule with a low boiling point. Which statement about butane is correct? A Butane is a large molecule and has strong intermolecular f
November 2021, Paper 3 Higher, Q8 (1 mark): Which statement is a reason that nanoparticles can be used as catalysts? A Nanoparticles are safe and have no risks. B Nanoparticles are smaller than atoms. C N
November 2021, Paper 3 Higher, Q16(a) (2 marks): Complete the table to show how many covalent bonds carbon forms in these allotropes. [2]
November 2021, Paper 3 Higher, Q16(b)(i) (2 marks): Diamond can be used as a cutting tool because it is so hard. Explain why diamond is so hard. Use ideas about structure and bonding in diamond in your answer. [2
November 2021, Paper 3 Higher, Q16(b)(ii) (2 marks): Graphite can be used as a lubricant because it is slippery. Explain why graphite is slippery. Use ideas about structure and bonding in graphite in your answer.
November 2021, Paper 3 Higher, Q17(c) (3 marks): Draw lines to connect each substance with its correct type of structure and bonding. Giant Covalent Substance M Ionic Metallic Substance O Polymer Substance P S
November 2021, Paper 4 Higher, Q1 (1 mark): Butane is a hydrocarbon molecule with a low boiling point. Which statement about butane is correct? A Butane is a large molecule and has strong intermolecular f
November 2020, Paper 1 Foundation, Q8 (1 mark): Ammonia has a simple molecular structure. Which statement explains why ammonia has a low melting point and a low boiling point? A The covalent bonds between the
November 2020, Paper 1 Foundation, Q16(b)(ii) (2 marks): Substance C is an ionic substance. Use the information in the table to explain why. [2]
November 2020, Paper 1 Foundation, Q22(a)(ii) (2 marks): Explain why structure B has a high melting point. [2]
November 2020, Paper 1 Foundation, Q22(a)(iii) (1 mark): Explain why structure B does not conduct electricity. [1]
November 2020, Paper 1 Foundation, Q22(b) (2 marks): Look at the structure of a metal in Fig. 22.2. Metals are malleable, which means they can be hammered or pressed into shape without breaking or cracking. Cation
November 2020, Paper 2 Foundation, Q23(a) (3 marks): Look at the table. It shows information about two materials. Polymer Metal Melting Point (°C) 100–260 1100 Density (kg / m3) 940 8940 Relative electrical conduc
November 2020, Paper 3 Higher, Q8 (1 mark): Ammonia has a simple molecular structure. Which statement explains why ammonia has a low melting point and a low boiling point? A The covalent bonds between the
November 2020, Paper 3 Higher, Q9 (1 mark): Graphite is a form of carbon. Graphite can conduct electricity. Why can graphite conduct electricity? A Delocalised electrons are between layers. B The ions can
November 2020, Paper 3 Higher, Q16(a)(ii) (2 marks): Explain why structure B has a high melting point. [2]
November 2020, Paper 3 Higher, Q16(a)(iii) (1 mark): Explain why structure B does not conduct electricity. [1]
November 2020, Paper 3 Higher, Q16(b) (2 marks): Look at the structure of a metal in Fig. 16.2. Metals are malleable, which means they can be hammered or pressed into shape without breaking or cracking. Cation
November 2020, Paper 4 Higher, Q16(a) (3 marks): Look at the table. It shows information about two materials. Polymer Metal Melting Point (°C) 100–260 1100 Density (kg / m3) 940 8940 Relative electrical conduc
June 2019, Paper 1 Foundation, Q8 (1 mark): The diameter of one type of carbon nanotube is 20 nm. What is 20 nm in metres? 2 × 10−3 m A 2 × 10−8 m B 2 × 10−20 m C 2 × 10−16 m D Your answer [1]
June 2019, Paper 1 Foundation, Q17(b) (6 marks): A new solid, compound X, has been discovered. Scientists investigated the effect of heat on compound X. Look at the graph. It shows how the state of compound X
June 2019, Paper 1 Foundation, Q20(a)(i) (1 mark): What is the name of structure Y? [1]
June 2019, Paper 1 Foundation, Q20(a)(ii) (2 marks): Diamond can be described as having a giant lattice structure. Why is diamond described as a giant lattice structure? [2]
June 2019, Paper 1 Foundation, Q20(b)(i) (2 marks): Diamond is the hardest naturally occurring substance on Earth. Explain why diamond is hard. [2]
June 2019, Paper 1 Foundation, Q20(b)(ii) (1 mark): Graphite is used in pencils. Graphite is a soft material. Explain why graphite is soft. [1]
June 2019, Paper 1 Foundation, Q20(c) (2 marks): Graphene is another substance made of carbon atoms. Graphene is a single layer of graphite. It is just one atom thick. Graphene can be used to make touchscreens
June 2019, Paper 1 Foundation, Q20(d)(ii) (2 marks): Methane has a low melting point. Explain why methane has a low melting point. Use ideas about structure and bonding in your answer. [2]
June 2019, Paper 1 Foundation, Q22(a)(ii) (1 mark): Lithium is malleable even though metallic bonds are strong. Explain why metals are malleable. [1]
June 2019, Paper 1 Foundation, Q22(a)(iii) (2 marks): Lithium can conduct electricity in the solid and liquid state. Explain why metals can conduct electricity. [2]
June 2019, Paper 1 Foundation, Q22(b) (2 marks): An alloy is a mixture of a metal with one or more other elements. When lithium is mixed with aluminium it makes an alloy that can be used in aircraft. Adding di
June 2019, Paper 1 Foundation, Q22(c)(i) (1 mark): Calculate the percentage of lithium atoms in the diagram of alloy B. Percentage of lithium atoms = % [1]
June 2019, Paper 1 Foundation, Q22(c)(ii) (1 mark): Use your answer to part (c)(i) to explain if the diagram accurately shows the structure of alloy B. [1]
June 2019, Paper 1 Foundation, Q23(a) (1 mark): Explain one possible risk of using nanoparticles in sun cream. [1]
June 2019, Paper 1 Foundation, Q23(b) (4 marks): A cube-shaped nanoparticle has sides of length 50 nm. 50 nm Calculate the surface area to volume ratio for this nanoparticle. Use the equation: ratio = surface
June 2019, Paper 1 Foundation, Q23(c)(i) (2 marks): Scientists compare the size of nanoparticles to the sizes of other small objects. Look at the table. Object Diameter (nm) Gold atom 0.14 Water molecule 0.27 DNA
June 2019, Paper 1 Foundation, Q23(c)(ii) (2 marks): Calculate how many zinc oxide nanoparticles would fit across a human hair. Give your answer to 2 significant figures. Number of nanoparticles = [2]
June 2019, Paper 2 Foundation, Q22(c)(i) (3 marks): Estimate how many times larger the silicon dioxide nanoparticle is, compared to a silicon atom. Give your answer to 1 significant figure. Number of times larger
June 2019, Paper 2 Foundation, Q22(c)(ii) (3 marks): Silicon dioxide is used as a catalyst. Suggest why 1 g of silicon dioxide is more effective as a catalyst when used as nanoparticles rather than as a powder. [3
June 2019, Paper 3 Higher, Q2 (1 mark): Carbon dioxide exists as a simple molecule. Why do simple molecules have low boiling points? A Simple molecules have weak covalent bonds between atoms. B Simple
June 2019, Paper 3 Higher, Q5 (1 mark): Carbon can form different allotropes. Which of these are allotropes of carbon? A Diamond, graphite, graphene. B Diamond, granite, graphite. C Fullerene, graphen
June 2019, Paper 3 Higher, Q15 (1 mark): Which of these substances has a giant covalent structure? A Carbon dioxide B Magnesium oxide C Sulfur dioxide D Silicon dioxide Your answer [1] SECTION B Answer
June 2019, Paper 3 Higher, Q16(a)(ii) (1 mark): Lithium is malleable even though metallic bonds are strong. Explain why metals are malleable. [1]
June 2019, Paper 3 Higher, Q16(a)(iii) (2 marks): Lithium can conduct electricity in the solid and liquid state. Explain why metals can conduct electricity. [2]
June 2019, Paper 3 Higher, Q16(b) (2 marks): An alloy is a mixture of a metal with one or more other elements. When lithium is mixed with aluminium it makes an alloy that can be used in aircraft. Adding di
June 2019, Paper 3 Higher, Q16(c)(i) (1 mark): Calculate the percentage of lithium atoms in the diagram of alloy B. Percentage of lithium atoms = % [1]
June 2019, Paper 3 Higher, Q16(c)(ii) (1 mark): Use your answer to part (c)(i) to explain if the diagram accurately shows the structure of alloy B. [1]
June 2019, Paper 3 Higher, Q17(a) (1 mark): Explain one possible risk of using nanoparticles in sun cream. [1]
June 2019, Paper 3 Higher, Q17(b) (4 marks): A cube-shaped nanoparticle has sides of length 50 nm. 50 nm Calculate the surface area to volume ratio for this nanoparticle. Use the equation: ratio = surface
June 2019, Paper 3 Higher, Q17(c)(i) (2 marks): Scientists compare the size of nanoparticles to the sizes of other small objects. Look at the table. Object Diameter (nm) Gold atom 0.14 Water molecule 0.27 DNA
June 2019, Paper 3 Higher, Q17(c)(ii) (2 marks): Calculate how many zinc oxide nanoparticles would fit across a human hair. Give your answer to 2 significant figures. Number of nanoparticles = [2]
June 2019, Paper 3 Higher, Q19(a)(i) (2 marks): Which element, A, B, C or D, would be best to use for cables in overhead pylons to transfer electricity? Tick (✓) one box. A B C D Explain your answer. [2]
June 2019, Paper 3 Higher, Q19(a)(ii) (1 mark): What is meant by physical property? [1]
June 2019, Paper 4 Higher, Q16(c)(i) (3 marks): Estimate how many times larger the silicon dioxide nanoparticle is, compared to a silicon atom. Give your answer to 1 significant figure. Number of times larger
June 2019, Paper 4 Higher, Q16(c)(ii) (3 marks): Silicon dioxide is used as a catalyst. Suggest why 1 g of silicon dioxide is more effective as a catalyst when used as nanoparticles rather than as a powder. [3
June 2019, Paper 4 Higher, Q20(d) (2 marks): The Group 7 elements exist as simple molecules. Fluorine boils at −188 °C. Explain why fluorine has a low boiling point. [2]
June 2018, Paper 1 Foundation, Q2 (1 mark): Which of these general properties correctly describes a metal? A Ductile and good conductor of heat B High density and forms negative ions C Malleable and low d
June 2018, Paper 1 Foundation, Q14 (1 mark): Which of these statements about nanoparticulate materials is correct? A Nanoparticles are much smaller than atoms. B Nanoparticulate materials can be used as ca
June 2018, Paper 1 Foundation, Q15 (1 mark): Ethanol is a liquid at room temperature. It has a low melting point and boiling point. Why? A Ethanol is an ionic compound. B The forces of attraction between e
June 2018, Paper 1 Foundation, Q21(a) (4 marks): Write about the other properties of diamond and graphite. Diamond Graphite [4]
June 2018, Paper 1 Foundation, Q21(b) (1 mark): Describe the type of bonding between the carbon atoms in diamond. [1]
June 2018, Paper 1 Foundation, Q21(c) (2 marks): Graphite is slippery. Use the structure of graphite to explain why. [2]
June 2018, Paper 1 Foundation, Q24 (6 marks): 24* Look at the data about some substances. Melting point Boiling point Does it conduct Density Substance (g/cm3) (°C) (°C) Electricity? A 0 100 No 1.0 B 1085 2
June 2018, Paper 2 Foundation, Q23(a) (3 marks): The table gives information about some alloys. Alloy Main metal or metals Use Musical instruments Brass and coins Bronze Statues Duralumin Aircraft parts Solder
June 2018, Paper 2 Foundation, Q23(b) (2 marks): Solder can be used to join metals together. A hot soldering iron is used to melt the solder. Soldering iron The table gives some information about solder, coppe
June 2018, Paper 3 Higher, Q3 (1 mark): Which statement about nanoparticulate materials is not correct? A Nanoparticles are much smaller than atoms. B Nanoparticulate materials can be used as catalyst
June 2018, Paper 3 Higher, Q4 (1 mark): Ethanol is a liquid at room temperature. It has a low melting point and boiling point. Why? A Ethanol is an ionic compound. B The forces of attraction between e
June 2018, Paper 3 Higher, Q14 (1 mark): What is the approximate size of a nanoparticle? A 0.07 nm B 0.40 nm C 50 nm D 1000 nm Your answer [1]
June 2018, Paper 3 Higher, Q15 (1 mark): Look at the diagram of a methane molecule. Which statement about methane is correct? A Electrons are transferred from hydrogen atoms to carbon atoms. B The cova
June 2018, Paper 3 Higher, Q25 (6 marks): 25* Look at the data about some substances. Melting point Boiling point Does it conduct Density Substance (g / cm3) (°C) (°C) electricity? A 0 100 no 1.0 B >300

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