GCSE BITESIZE Examinations
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1 GCSE BITESIZE Examinations General Certificate of Secondary Education AQA SCIENCE A CHY1A Unit Chemistry C1a (Products from Rocks) AQA Chemistry Unit Chemistry C1a (Products from Rocks) FOUNDATION TIER Specimen Paper Time allowed: 30 minutes Maximum marks: 36 Instructions Answer all of the questions for the Tier you are attempting. Record your answers on a separate answer sheet only. Do all rough work in this book - not on your answer sheet. Advice Do not choose more responses than you are asked to. You will lose marks if you do. 1
2 FOUNDATION TIER SECTION ONE Questions ONE to FIVE In these questions, match the letters A, B, C and D with the numbers 1-4. Use each answer only once. Mark your choice on the answer sheet. QUESTION ONE Match words A, B, C, D with the numbers 1-4 in the table. A B C D Carbon Limestone Gold Smart alloy 1 An unreactive metal 2 A substance mixed with iron to produce steel 3 A substance that remembers its shape 4 A rock that can be quarried for use as a building material 2
3 QUESTION TWO This question is about the properties of transition metals. Match the properties A, B, C and D with the numbers 1-4 in the table. A B C D Good conductor of heat Good conductor of electricity Can be pressed into shape Very strong Use of property 1 Used in scaffolding on buildings 2 Used in frying pans 3 Used in electrical wiring 4 Used to make car body parts 3
4 QUESTION THREE The diagram shows a hydrogen atom: X Match the words A, B, C and D with the numbers 1-4 in the sentences. A B C D a bond an electron an element the nucleus Hydrogen is The structure labelled X is When hydrogen reacts with another element, it gives or shares The atoms are then held together by
5 QUESTION FOUR This question is about metals. Sodium Calcium Aluminium Iron Copper Lead Extracted by electrolysis Extracted by heating with carbon Match the metals A, B, C and D with the numbers 1-4 in the table. A B C D Calcium Iron Aluminium Copper Description of metal 1 Is extracted by heating with carbon in a blast furnace 2 Used in electrical wiring and plumbing 3 Metallic element in quicklime 4 Low density and resistant to corrosion 5
6 QUESTION FIVE This question is about alkanes. The diagrams below show the chemical structures of four different alkanes: H H I I H - C - C - H I I H H H H H H H I I I I I H - C - C - C - C - C -H I I I I I H H H H H H H H H H H I I I I I I H - C - C - C - C - C - C - H I I I I I I H H H H H H H I H - C - H H I H I I I H C - C C H I I I H H H A B C D Match alkanes A, B, C, and D to numbers 1-4 in the sentences. The alkane with eight atoms in a molecule is 1 The alkane with the highest boiling point is 2 The alkane with the formula C 5 H 12 is 3 The alkane with a branched chain is 4. 6
7 SECTION TWO Questions SIX to NINE Each of these questions has four parts. In each part, choose only one answer. Mark your choices on the answer sheet. QUESTION SIX This question is about alloys. 6A The definition of an alloy is 1 a metal that has been treated to make it shinier than other metals. 2 a metal that has an extremely low density. 3 a mixture of a metal with another metal and/or carbon. 4 a compound of a metal with another metal and/or carbon. 6B Alloys can be designed to show specific properties. Which of the following is the most important property of stainless steel? 1 Resistant to corrosion 2 Brittle 3 Reactive 4 Easily shaped 7
8 6C Which of the diagrams below best represents the particles in an alloy? 6D Copper, gold and aluminium are often used in alloys, rather than as pure metals. This is because 1 in their purest form, metals are too brittle. 2 in their purest form, metals are too dense. 3 in their purest form, metals are too soft. 4 in their purest form, metals are too reactive. 8
9 QUESTION SEVEN Read the article below: Mining company quarries too much limestone A quarrying firm, Cast Mining Ltd, has been told to cut back on extractions at a site in south Wales. The local park authority is taking legal action because it says the beauty of the area around Widows Ridge is being spoilt by an open-cast mine. The firm began working Pickford Quarry in January 2000, and is allowed to quarry limestone when extracting other minerals such as fluorspar or lead. But the park authority says the company is breaching the terms of its agreement. It says Cast Mining Ltd has extracted more limestone than it is allowed, left waste visible at the site, and has not redeveloped the site. 7A What could be a negative effect on the community of an open-cast mining town? 1 More jobs in the mining industry for local people 2 Better transport links to the area 3 Boost to the local economy 4 Loss of tourist industry 7B Which of the following is not an environmental problem caused by limestone mining? 1 Potential oil spills on surrounding waterways 2 High levels of dust in the area from blasting in the quarries 3 Noise pollution from increased transportation vehicles 4 Destruction of wildlife habitats in the area 9
10 7C In the article it says that the mining firm has not redeveloped the area. What is the most socially responsible use for an old open-cast mine? 1 Fill it with water to create an artificial lake within a landscaped area for use as a public park. 2 Use it as a landfill site for local rubbish. 3 Make it the site of a new power station. 4 Fill it with water and use it for fish farming. 7D Despite many environmental groups protesting at the use of limestone mines, limestone is still quarried. This is because it has many uses, including being an important raw material in the production of... 1 copper. 2 sulfur. 3 aluminium. 4 cement. 10
11 QUESTION EIGHT Below is a diagram of a fractional distillation column used to separate hydrocarbon molecules in crude oil. 8A Crude oil is a mixture of hydrocarbons. A hydrocarbon is 1 a long chain of one element. 2 a compound of carbon and hydrogen only. 3 a compound of carbon, hydrogen and oxygen only. 4 a mixture of carbon and hydrogen only. 11
12 8B Where in the fractionating column will the shortest chain hydrocarbon molecules be drawn off? o C o C o C o C 8C Which of the following statements about the properties of hydrocarbons is correct? 1 The most viscous hydrocarbons are drawn off at the bottom of the tower. 2 The least viscous hydrocarbons are drawn off at the bottom of the tower. 3 The most viscous hydrocarbons have the shortest chain length. 4 The longer the molecule, the more flammable the hydrocarbon is. 8D The fractions of crude oil provide us with important fuels, but burning these fuels releases gases and particles. Which of the following is not a waste product of burning fossil fuels? 1 Carbon dioxide 2 Methane 3 Water vapour 4 Sulfur dioxide 12
13 QUESTION NINE Limestone is used to reduce air pollution. A student tests four samples of sulfuric acid by adding powdered limestone to them. The sulfuric acid is 5cm 3 in volume and 1M in concentration. The limestone powder is added in o increasing amounts up to 5 grams o stirred until the limestone has dissolved o and the ph measured using a digital probe. A ph scale shows how acid or alkaline a solution is. A neutral solution has a ph of 7. The results are shown in the graph: 9A The dependent variable in this experiment is 1 the concentration of the solution. 2 the ph of the solution. 3 the mass of limestone added. 4 the volume of solution. 13
14 9B From the graph, what would you expect the final ph to be if 1.5g of limestone was added to the sulfuric acid?? C The student s teacher suggested that they use a two-decimal-place digital balance instead of the one-decimal-place balance used previously. This would improve the results because they would be more 1 valid. 2 precise. 3 reliable. 4 accurate. 9D After looking at the graph they drew, the student noticed they had an anomalous result, so they needed to repeat a test. At which mass of limestone is the anomalous result? 1 1g 2 2g 3 3g 5 4g END OF QUESTIONS 14
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