1) Which chemical did you use today? a) Sodium sulphate b) Bicarbonate of Soda c) Hydrogen sulphate d) Sodium thiosulphate 2) What was the name of the piece of equipment that your reaction took place in? a) Beaker b) Conical flask c) Measuring Cylinder d) Conical Beaker 3) Why did you repeat your experiment? a) Increase reliability of your results b) Increase accuracy of your results c) It's good practice 4) What happened to the rate of reaction as the concentraion of hydrochloric acid used increased? a) The rate of reaction decreased b) The time taken for the reaction increased c) The rate of reaction increased d) The time taken for the reaction didn't change 5) What was your dependent variable a) Concentration of hydrochloric acid b) Concentration of sodium thiosulphate c) Amount of sodium thiosulpate used d) Time taken 6) What was your independent variable? a) Concentration of hydrochloric acid b) Concentration of sodium thiosulphate c) Amount of sodium thiosulphate used d) Time taken 7) What type of graph should you have drawn? a) Line graph b) Bar chart c) Niether d) Either 8) Why did increasing the concentration increase the rate of reaction? a) More particles means more chance of a collision b) The particles had more energy c) The particles were moving faster d) The particles were moving slower 9) How could you have made your results more accurate? a) Used a bigger cross b) Used more different concentrations of sodium thiosulphate c) Used an automated light sensor instead of the cross d) Carried out more repeats 10) How could you have made your results more reliable? a) Used a bigger cross b) Used more different concentrations of sodium thiosulphate c) Used an automated light sensor instead of the cross d) Carried out more repeats

Concentration - Rate of Reaction - Sodium Thiosulphate Quiz

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