Ceramics, polymers and composites

9.Which of the following is an application of fibreglass?

10.Which property of polymers can pose an environmental challenge?

11.How are ceramics typically made?

12.Which of the following is an example of a synthetic polymer?

13.A student drops a ceramic plate and it breaks into several pieces. Which property of ceramics does this demonstrate?

14.Which of the following is an example of a natural polymer?

15.A manufacturer wants to produce a lightweight, strong material for a racing bicycle frame. Which material would be most suitable?

16.Which property of polymers makes them useful for electrical insulation?

17.The table shows the properties of four materials. Which material is most likely a ceramic? | Material | Hardness | Brittleness | Thermal conductivity | |----------|----------|-------------|---------------------| | A | High | Low | High | | B | High | High | Low | | C | Low | Low | High | | D | Low | High | Low |

18.A composite is made by combining glass fibres with a plastic matrix. What is the main advantage of this composite over the plastic alone?

19.A student measures the mass and volume of four samples and calculates their densities. Which sample is most likely a polymer? | Sample | Density (g/cm³) | |--------|-----------------| | A | 2.5 | | B | 0.9 | | C | 7.8 | | D | 1.2 |

20.A student investigates the thermal conductivity of a ceramic tile and a plastic sheet. They place each material on a hot plate and measure the temperature on the top surface after 5 minutes. Which set of results would be expected? | Material | Top temperature (°C) | |----------|---------------------| | A: Ceramic | 80 | | B: Plastic | 40 | | C: Ceramic | 40 | | D: Plastic | 80 |

21.Which statement about polymers is correct?

22.What is the process of heating clay in a kiln to make pottery called?

23.A bridge is to be built. Which material would be most suitable for the supporting pillars due to its ability to withstand high compressive forces?

24.A student wants to compare the thermal conductivity of a ceramic tile and a plastic sheet. They place each material on a hot plate and measure the temperature on the top surface after 5 minutes. Which variable should they keep constant?

25.A student investigates the brittleness of four materials by dropping a 100 g mass onto them from a height of 50 cm. They record whether the material cracks. Which material is most likely a ceramic?

26.A manufacturer wants to produce a lightweight, strong material for a racing bicycle frame. They consider carbon fibre, steel, aluminium, and wood. Which material is most suitable?

27.Which of the following is a synthetic polymer?

28.A student measures the mass and volume of four samples and calculates their densities. Which sample is most likely a polymer?

29.A student places a ceramic mug and a plastic mug in an oven at 200°C. After 10 minutes, they remove both mugs with tongs. Which mug is likely to be hotter to the touch?

30.Which property of polymers makes them useful for making plastic bags?

31.A student investigates the electrical conductivity of four materials using a circuit with a battery and a bulb. Which material is most likely a polymer?

32.Which of the following is an example of a composite material?

33.A manufacturer wants to produce a lightweight boat hull that is also strong. Which material would be most suitable?

34.A student tests four materials for thermal conductivity by placing a cube of each material on a hot plate and measuring the temperature on the opposite side after 2 minutes. The results are shown in the table. | Material | Temperature after 2 minutes (°C) | |----------|----------------------------------| | W | 25 | | X | 45 | | Y | 30 | | Z | 22 | Which material is most likely a ceramic?

35.A composite is made by combining carbon fibres with a polymer matrix. What is the main advantage of this composite over the polymer alone?

36.Which of the following is an advantage of polymers being unreactive?

37.A student measures the density of four materials. The results are shown in the table. | Material | Density (g/cm³) | |----------|----------------| | A | 0.9 | | B | 2.5 | | C | 7.8 | | D | 1.2 | Which material is most likely a polymer?

38.A student investigates the brittleness of four materials by dropping a 100 g mass from a height of 50 cm onto each sample. They record whether the material cracks. The results are shown. | Material | Cracks? | |----------|---------| | P | Yes | | Q | No | | R | Yes | | S | No | Which materials are most likely ceramics?

39.A student investigates the electrical conductivity of four materials using a circuit with a battery and a bulb. The bulb lights up for some materials. Which material is most likely a polymer?

40.A student wants to test the brittleness of a ceramic tile and a plastic sheet. They drop a 100 g mass from a height of 50 cm onto each material and observe whether it cracks. Which of the following is the most likely outcome?