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Chemistry AQA GCSE C.10 - Using Resources Verified Answers

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Chemistry AQA GCSE C.10 - Using Resources Verified Answers 1. What is meant by a finite resource? Answer: A resource that is being depleted at a faster rate than it can be replenished, eventually leading to exhaustion. 2. Provide examples of finite resources. Answer: Metal ores, crude oil, and limestone are examples of finite resources. 3. What is the main component of soda-lime glass? Answer: Soda-lime glass is composed of sodium carbonate, soda, and lime. 4. Define a renewable resource. Answer: A resource that can be replenished naturally and is not depleted by moderate use. 5. Provide examples of renewable resources. Answer: Solar energy, biological resources such as forests and fisheries, and biological organisms used to produce biofuels are examples of renewable resources. 6. Describe the structure of a composite material. Answer: Composites consist of a reinforcement (fibers) surrounded by a matrix or binder. 7. How can the plastic industry use renewable resources? Answer: The plastic industry can use ethane made from ethanol, which is produced by fermenting glucose, reducing its dependence on finite resources and improving sustainability. 8. What are the components of bronze and brass? Answer: Bronze is a mixture of copper and tin, while brass is an alloy of copper and zinc. 9. What is corrosion? Answer: Corrosion is the deterioration of a metal due to a chemical reaction in its environment. 10. Give an example of a synthetic product replacing a natural resource. Answer: Polyester (polyester) can replace cotton in some applications. 11. How do chemists contribute to sustainable development? Answer: Chemists can develop processes that use fewer resources by optimizing energy efficiency and reducing waste. 12. Define potable water. Answer: Potable water is water that is safe for human consumption. 13. What is potable water composed of? Answer: Potable water typically contains ions such as fluoride, sodium, and calcium, giving it its taste. 14. What is distillation? Answer: Distillation is the process of purifying a liquid through heating or cooling. 15. What are three methods for sterilizing fresh water? Answer: Chlorine, ozone, and ultraviolet light are three methods for sterilizing fresh water. 16. Describe the water treatment process. Answer: The process involves screening out large objects, sedimentation, filtration, disinfection, and pH adjustment to produce potable water. 17. What is desalination? Answer: Desalination is the process of purifying salty water into potable water. 18. Describe the process of distillation using a conical flask. Answer: To distill saltwater using a conical flask, heat the mixture until it boils, then cool it slowly to collect condensed water vapor in a test tube. explain why we don't use desalination to produce large quantities of potable water in the UK (2) ️Lots of energy is used for desalination compared to filtration and sterilisation of fresh water. Since the UK has a plentiful supply of fresh water, there's no need to use the desalination process. how to test a salt ️sodium = a yellow flame test chlorine = white precipitate with silver nitrate describe the process of sewage treatment ️1) Screening - moves past a metal grid that removes large objects and grit from the waste water 2) Primary treatment - solid sediments are allowed to settle out from the mixture. Paddles rotate which causes sludge to be pushed towards the centre of the tank 3) Secondary treatment - Useful bacteria feed on remaining organic matter breaking them down aerobically 4) Final treatment - Sediment is either recycled back to secondary treatment tank or passed into sludge treatment. Waste water is now safe enough to be discharged into rivers treating sewage sludge ️Digested anaerobically by microorganisms beneath the tank's surf

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Chemistry AQA GCSE C.10 - Using Resources Verified Answers
1. What is meant by a finite resource?



Answer: A resource that is being depleted at a faster rate than it can be replenished, eventually leading
to exhaustion.



2. Provide examples of finite resources.



Answer: Metal ores, crude oil, and limestone are examples of finite resources.



3. What is the main component of soda-lime glass?



Answer: Soda-lime glass is composed of sodium carbonate, soda, and lime.



4. Define a renewable resource.



Answer: A resource that can be replenished naturally and is not depleted by moderate use.



5. Provide examples of renewable resources.



Answer: Solar energy, biological resources such as forests and fisheries, and biological organisms used to
produce biofuels are examples of renewable resources.



6. Describe the structure of a composite material.



Answer: Composites consist of a reinforcement (fibers) surrounded by a matrix or binder.



7. How can the plastic industry use renewable resources?

, Answer: The plastic industry can use ethane made from ethanol, which is produced by fermenting
glucose, reducing its dependence on finite resources and improving sustainability.



8. What are the components of bronze and brass?



Answer: Bronze is a mixture of copper and tin, while brass is an alloy of copper and zinc.



9. What is corrosion?



Answer: Corrosion is the deterioration of a metal due to a chemical reaction in its environment.



10. Give an example of a synthetic product replacing a natural resource.



Answer: Polyester (polyester) can replace cotton in some applications.



11. How do chemists contribute to sustainable development?



Answer: Chemists can develop processes that use fewer resources by optimizing energy efficiency and
reducing waste.



12. Define potable water.



Answer: Potable water is water that is safe for human consumption.



13. What is potable water composed of?



Answer: Potable water typically contains ions such as fluoride, sodium, and calcium, giving it its taste.



14. What is distillation?

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