Quickly add 50 cm 3 of acid.
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1 1 One of the instructions for an experiment reads as follows. What is the best piece of apparatus to use? Quickly add 50 cm 3 of acid. a a conical flask a a 2 student uses the apparatus shown in the diagram below to measure the volume of carbon dioxide gas made when different masses of marble chips are added to 25 cm 3 of dilute hydrochloric acid. gas syringe bung marble chips 25 cm 3 dilute hydrochloric acid Which other items of apparatus are needed? funnel and balance funnel and stopwatch and balance and stopwatch PhysicsndMathsTutor.com
2 3 The diagram shows three pieces of apparatus that are used for measuring the volume of a liquid What are these pieces of apparatus? PhysicsndMathsTutor.com
3 4 The four pieces of apparatus shown below are used in chemical experiments. measuring cylinder thermometer Which statement about the apparatus is correct? The measures the volume of liquid added in a titration. The measures the mass of a substance used in an experiment. The measures the volume of gas given off in a reaction. The thermometer measures the density of a solution. 5 student measures the rate of two reactions. In one reaction, there is a change in mass of the reactants during the reaction. In the second reaction, there is a change in temperature during the reaction. Which piece of apparatus would be essential in both experiments? balance clock thermometer PhysicsndMathsTutor.com
4 6 rystals of sodium chloride were prepared by the following method cm 3 of dilute hydrochloric acid was accurately measured into a conical flask. queous sodium hydroxide was added until the solution was neutral. The volume of sodium hydroxide added was measured. The solution was evaporated and the crystals washed with approximately 15 cm 3 of water. Which row shows the pieces of apparatus used to measure the 25.0 cm 3 of hydrochloric acid, the volume of aqueous sodium hydroxide and the 15 cm 3 of water? 7 Lead iodide is insoluble in water. Lead iodide is made by adding aqueous lead nitrate to aqueous potassium iodide. Which pieces of apparatus are needed to obtain solid lead iodide from 20 cm 3 of aqueous lead nitrate? , 2 1, 3 and 5 1, 4 and 5 2, 4 and 5 PhysicsndMathsTutor.com
5 8 The diagram shows an experiment to find the formula of magnesium oxide. crucible heat magnesium ribbon Which piece of apparatus would be needed in addition to those shown? a balance a a spatula a thermometer 9 Part of the instructions in an experiment reads as follows. What is the best piece of apparatus to use? Quickly add 50 cm 3 of acid. a a conical flask a a PhysicsndMathsTutor.com
6 10 student investigates how the concentration of an acid affects the speed of reaction with a 0.5 g mass of magnesium at 30. The student has a beaker, concentrated acid, water and the apparatus below. P Q R S a balance a clock a a thermometer Which pieces of apparatus does the student use? P, Q and R only P, Q and S only Q, R and S only P, Q, R and S 11 student was provided with only a thermometer, a stopwatch and a beaker. What could the student measure? 10.5 g solid and 24.8 cm 3 liquid 10.5 g solid and cm 3 liquid and 45 seconds 25 and 45 seconds PhysicsndMathsTutor.com
7 12 student carries out an experiment to find how fast 3 cm pieces of magnesium ribbon dissolve in 10 cm 3 samples of sulfuric acid at different temperatures. Which piece of apparatus does the student not need? balance stop-clock thermometer 13 student takes 2 g samples of calcium carbonate and adds them to 20 cm 3 samples of dilute hydrochloric acid at different temperatures. She measures how long it takes for the effervescence to stop. Which apparatus does she use? balance clock filter funnel measuring cylinder thermometer PhysicsndMathsTutor.com
8 14 P, Q, R and S are pieces of apparatus. P Q R S 50 cm 3 50 cm 3 25 cm cm 3 Which row describes the correct apparatus for the measurement made? 15 uring a reaction, the following changes take place. 1 The temperature rises. 2 gas is given off. Which apparatus is required to measure the rate of this reaction? balance and balance and gas syringe gas syringe and gas syringe and stopclock PhysicsndMathsTutor.com
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