Topic – Rate of reaction The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club XL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club The PiXL Club 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GCSE Chemistry   Topic – Rate of reaction    © Copyright The PiXL Club Ltd, 2017 This resource is strictly for the use of member schools for as long as they remain members of The PiXL Club. It may not be copied, sold nor transferred to a third party or used by the school after membership ceases. Until such time it may be freely used within the member school. All opinions and contributions are those of the authors. The contents of this resource are not connected with nor endorsed by any other company, organisation or institution. www.pixl.org.uk The PiXL Club Ltd, Company number 07321607

GetIT – Rate of reaction Reactants  products If some reactant is left at the end of a reaction then the reactant was in excess If all the reactant is used up in the reaction then the reactant was limiting Rate of reaction can be calculating by measuring how much product is made or how much reactant is used

Match IT Reactant Reaction time Excess Product Limiting reactant   Time between the start of a reaction and its completion Reaction time Substance that is made in a chemical reaction Excess A measure of how much solid is dissolved in water Product A substance that speeds up a reaction without being used up. Lowers the activation energy Limiting reactant Substance that takes part in a chemical reaction Concentration The amount of product made ÷ time OR The amount of reactant used ÷ time Surface area Reactant that is completely used up in a reaction Catalyst A reactant that is not all used up in a reaction Rate of reaction The area of a solid that is in contact with other reactants

Match IT - Answers Reactant Reaction time Excess Product   Substance that takes part in a chemical reaction Reaction time Time between the start of a reaction and its completion Excess A reactant that is not all used up in a reaction Product Substance that is made in a chemical reaction Limiting reactant Reactant that is completely used up in a reaction Concentration A measure of how much solid is dissolved in water Surface area The area of a solid that is in contact with other reactants Catalyst A substance that speeds up a reaction without being used up. Lowers the activation energy Rate of reaction The amount of product made ÷ time OR The amount of reactant used ÷ time

Label IT Label the diagram, including the reactants and products. Describe how this equipment could be used to monitor the rate of reaction. List 3 ways to increase the rate of the reaction.

Label IT - Answers Clamp Measuring cylinder Delivery tube Conical flask Product (gas) Reactants

Label IT Describe how this equipment could be used to monitor the rate of reaction. Time how long it takes to collect a certain volume of gas Measure how much gas in produced in a set amount of time List 3 ways to increase the rate of the reaction. Increase the concentration of the liquid reactant Increase the surface area of the solid reactant Increase the temperature Add a catalyst

Calculate the rate of reaction between 0 and 10 seconds. Label IT Calculate the rate of reaction between 0 and 10 seconds. Volume of gas produced/ cm3

ΔY = 40cm3 ΔX = 10s Label IT - Answers Use the gradient of the line to find the rate over the first 1 seconds of the journey. (Δ = difference) rate = volume ÷ time Draw a triangle under the line for the first 10 seconds Find the volume (ΔY) Find the time (ΔX) Gradient = ΔY ÷ ΔX Rate = 40cm3 ÷ 10s = 4cm3/s Volume of gas produced/ cm3 ΔY = 40cm3 ΔX = 10s