Answered

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Component 4B
Q1. What should the learners use to measure the independent variable, that is, the temperature?
Q2. Which variables, or what sort of things, should the learners make sure are the same so that the
experiment is valid/ a fair test.
Q3. What other way could the learners have tried to make the reaction go faster?
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Sagot :

jafif67556

Answer:

Component 4B

1. The learners should use a thermometer or a digital temperature sensor to measure the independent variable, which is the temperature.

2. To ensure that the experiment is valid and a fair test, the learners should control the following variables:

• Volume of reactants: Ensure the same amount of each reactant is used in every trial.

• Concentration of reactants: Keep the concentration of the reactants constant.

• Surface area of reactants: If using solids, make sure they have the same surface area.

• Time duration: The duration for which the reaction is observed should be consistent.

• Environmental conditions: Conduct the experiment in the same location to maintain consistent humidity, light, and air pressure.

• Stirring rate: If stirring is involved, ensure it is done at the same rate.

3. Here are some other ways to make the reaction go faster:

• Increase the concentration of reactants: Higher concentration generally increases the reaction rate.

• Increase the surface area of reactants: Grinding solids into finer particles can increase the reaction rate.

• Add a catalyst: A catalyst can lower the activation energy and speed up the reaction without being consumed in the process.

• Increase the temperature: Higher temperatures typically increase the reaction rate by providing more energy to the reacting molecules.

Increase the pressure (for reactions involving gases): Higher pressure can increase the frequency of collisions between gas molecules.

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