1) What is an atom? ​​ a) a small blob b) a tiny thing c) what stuff is made of d) Smallest part of an element that can exist​​ 2) What is the equation for the complete combustion of methane?​​ a) propane + oxygen -------> carbon dioxide + water​​ b) Methane + hydrogen -------> carbon dioxide + water​​ c) Methane + oxygen -------> carbon dioxide + salt d) Methane + oxygen -------> carbon dioxide + water​​ 3) Give the 4 state symbols.​​ a) (s) (l) (g) (a)​​ b) (d) (l) (g) (aq)​​ c) (s) (y) (g) (aq)​​ d) (s) (l) (g) (aq)​​ 4) What happens in an oxidation reaction?​​ a) Oxygen is added​​ b) Oxygen is removed c) hydrogen is added​​ d) Oxygen is changed 5) What is used to determine the pH of a substance?​​ a) A chemical b) An indicator​​ c) A gear d) An acid 6) What colour does universal indicator go in an acid?​​ a) green b) pink c) purple d) Red​​ 7) What gas is produced when a metal reacts with an acid?​​ a) oxygen b) nitrogen c) Hydrogen​​ d) carbon dioxide 8) Product formed when an acid and alkali react​​ a) Water and a solid b) Water and air c) Water and a salt​​ d) Water and a acid 9) What happens to the temperature in an exothermic reaction?​​ a) decreases b) Increases​​ c) stay the same d) nothing 10) What is copper oxide heated with to displace copper?​​ a) Carbon​​ b) Sand c) Oxygen d) hydrogen 11) What is heated to produce glass?​​ a) Sand and limestone​​ b) sodium carbonate and limestone​​ c) Sand, sodium carbonate and brimstone​​ d) Sand, sodium carbonate and limestone​​

C2 Year 7 Reacll Quiz

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