1) Which of these would not increase the rate of a chemical reaction? a) Increasing the temperature b) Adding more pressure c) Adding more acid reactant d) Increasing the surface area e) Adding more catalyst 2) How can you tell a reaction has gone faster using a graph? a) The line ends higher b) The line goes further to the right c) The line ends lower d) The gradient is steeper e) The gradient is less steep f) The line ends further to the left 3) The theory that particles must collide in order to react is known as _______________ theory. a) kinetic b) potential c) activation d) collision e) faster 4) When temperature increases the particles in that substance move faster and collide more __________ a) energy b) frequently c) concentrated d) faster e) collisions 5) When the ______ of a gas is increased, it means that the same number of particles are now in a smaller space, so they collide more frequently. a) Temperature b) Pressure c) Concentration d) Surface area e) Cataylst 6) Catalysts work by lowering the ____________ for a reaction. a) Surface area b) pathway c) activation energy d) concentration e) enzyme 7) Marble chips and hydrochloric acid react to produce ______________ gas, water and calcium chloride. a) Carbon dioxide b) hydrogen c) carbon monoxide d) bromine e) sulfur dioxide f) oxygen 8) The speed that the gas is produced could be measured with a _____________ and a stop clock. a) Beaker b) Timer c) Measuring cylinder d) conical flask e) gas syringe 9) You could also use a _____________ to measure the loss of mass when a gas is produced. a) Pipette b) Measuring cylinder c) Scales d) Beaker e) Ruler f) Balance 10) In the thiosulfate experiment you timed how long it took the __________ to dissapear. a) Precipitate b) Colour c) Foler d) Cross e) Teacher f) Solid 11) What does this arrow mean in this reaction? a) That is does not always work b) That it is reversible c) That reactants are made d) That they are backwards e) That they are exothermic

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