1) Particle found in an atoms nucleus are.... a) electrons + protons b) electrons + neutrons c) protons and neutrons 2) Electrons are... a) negative b) positive c) neutral 3) An atoms atomic number tells you the number of.... a) protons b) neutrons c) protons and neutrons d) electrons 4) Methane gas (CH4) is an.... a) element b) compound c) mixture 5) The electron coniguration for carbon is.... a) 2,6 b) 2,4 c) 6,2 d) 4,2 6) The chemical name for limestone is a) calcium oxide b) carbon dioxide c) calcium carbonate d) sodium caronate 7) When calclium carbonate is heated calcium oxide and carbon dioxide is produced. This reaction is called.. a) reduction b) thermal decomposition c) catalytic cracking 8) Calcium oxides and Calcium hydroxides common names are.... a) quicklime and slaked lime b) slaked lime and quicklime c) limestone and quicklime d) slaked lime and limestone 9) The reaction shown is an example of a ..............reaction a) reduction b) thermal decomposition c) exothermic 10) Iron is extracted by a reduction reaction in a) a fractionating coloumn b) the blast furnace c) lime kiln 11) A metal that contains other elements is called a a) compound b) element c) alloy 12) An example of an alloy is.... a) gold b) iron c) titanium d) brass e) nickel 13) Copper is extracted by.... a) smelting b) electrolysis c) photomining d) bioleaching e) displacemenet f) all of the above 14) Properties of titanium and aluminium are ... a) the are heavy b) they are weak c) they are strong and light d) they are insulators 15) Hydrocarbons are compounds make from a) Carbon and helium b) Carbon and hydrogen c) Calcium and hydrogen d) Calcium and helium 16) Crude oil is a mixture of hydrocarbons. Fractions are seperated using.. a) reduction b) thermal decomposition c) distillation d) filtering e) chromotography f) electrolysis 17) Which one of the following is not a property of long hydrocarbons a) dark b) smokey flame c) viscous d) easy to burn 18) When fuels are burnt what is produced? a) oxygen and carbon dioxide b) water and carbon dioxide c) oygen and water 19) Petrol contains sulphur particles. When petrol is burnt it produces sulphur dioxide. This causes a) global warming b) global dimming c) acid rain 20) What pollutant causes global dimming? a) sulphur dioxide b) carbon dioxide c) particulates d) nitrogen oxide 21) Long hydrocarbons are made into more useful smaller ones by.... a) catalytic cracking b) fractional distillation c) thermal decompostion d) reduction 22) All monomers used for making plastics have a) singal bonds b) a double bond c) chlorine 23) Oils that have a double bond described as un-saturated. A property of these oils is a) they are solid b) they are unhealthy c) they are liquid 24) Which one of these is not an emulsion a) milk b) ice cream c) mayonaise d) water 25) Ethanol can be made by reacting ethene with steam or a) distillation b) fermentation c) reduction d) decomposition 26) Where do convection currents take place in the Earth a) crust b) mantle c) inner core d) outer core 27) The Earths atmosphere is mostly.. a) carbon dioxide b) oxygen c) argon d) nitrogen 28) The Earths early atmosphere was mostly a) oxygen b) carbon dioxide c) nitrogen d) argon 29) Convection curents in the Earths mantle lead to the movement of..... a) the inner core b) tectonic plates c) the atmosphere 30) What organisms first started to produces oxygen by photosynthesis? a) trees b) virus' c) bacteria d) humans

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