Rate of reaction required practical (Part 2)

In this lesson, students will complete the required practical: Investigate the effect of concentration on rate of reactions by a method involving a change in colour or turbidity. After the required practical, students will explain observations and draw conclusions using particle theory.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Q1.Which of the following equipment is used to measure 20 cm³ of hydrochloric acid?

Beaker Top pan balance Measuring cup Measuring cylinder

1/6

Q2.How many times should a practical be repeated to to find a mean?

1 2 3

2/6

Q3.Hypothesis: Increasing the concentration of hydrochloric acid increases the rate of reaction when reacting with magnesium. What is the independent variable (variable that is being changed)?

Mass of magnesium Volume of hydrochloric acid Concentration of hydrochloric acid Time

3/6

Q4.Hypothesis: Increasing the concentration of hydrochloric acid increases the rate of reaction when reacting with magnesium. What is the dependent variable (variable that is being measured)?

Volume of hydrogen gas Concentration of hydrochloric acid Mass of magnesium Time

4/6

Q5.Hypothesis: Increasing the concentration of hydrochloric acid increases the rate of reaction when reacting with magnesium. Which of the following are the control variables? (Tick THREE)

Select three (3) boxes

Mass of magnesium Concentration of hydrochloric acid Volume of hydrochloric acid Time Temperature

5/6

Q6.How can we check reproducibility to ensure the data obtained from a practical is of high quality?

Repeat the procedure 3 times and find a mean By determining sources of error By getting someone else to follow your method and see if their results are similar to yours All of the above

6/6

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Q1.Which of the following equipment is used to measure 20 cm³ of hydrochloric acid?

Beaker Top pan balance Measuring cup Measuring cylinder

1/6

Q2.How many times should a practical be repeated to to find a mean?

1 2 3

2/6

Q3.Hypothesis: Increasing the concentration of hydrochloric acid increases the rate of reaction when reacting with magnesium. What is the independent variable (variable that is being changed)?

Mass of magnesium Volume of hydrochloric acid Concentration of hydrochloric acid Time

3/6

Q4.Hypothesis: Increasing the concentration of hydrochloric acid increases the rate of reaction when reacting with magnesium. What is the dependent variable (variable that is being measured)?

Volume of hydrogen gas Concentration of hydrochloric acid Mass of magnesium Time

4/6

Q5.Hypothesis: Increasing the concentration of hydrochloric acid increases the rate of reaction when reacting with magnesium. Which of the following are the control variables? (Tick THREE)

Select three (3) boxes

Mass of magnesium Concentration of hydrochloric acid Volume of hydrochloric acid Time Temperature

5/6

Q6.How can we check reproducibility to ensure the data obtained from a practical is of high quality?

Repeat the procedure 3 times and find a mean By determining sources of error By getting someone else to follow your method and see if their results are similar to yours All of the above

6/6

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Worksheet

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PPTX

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Rate of Reaction Required Practical 2

Please complete this exit quiz. This quiz will test your understanding of Rate of Reaction Required Practical 1

Question 1

Question 2

Question 3

Question 4

Question 5

Q1.Sodium thiosulphate reacts with hydrochloric acid to form sodium chloride, sulphur, water and sulphur dioxide. Which of the following is the state of sulphur at room temperature?

solid liquid gas aqueous

1/5

Q2.What are two reasons why the rate of the reaction increases as the concentration of hydrochloric acid increases when reacting with sodium thiosulphate?

Select two (2) boxes

More energetic collisions More frequent collisions More number of reacting particles per unit volume Larger volume of reactants in solution Lower activation energy

2/5

Q3.Hypothesis: Increasing the concentration of hydrochloric acid increases the rate of reaction when reacting with sodium thiosulphate. What is the independent variable (variable that is being changed)?

Concentration of sodium thiosulphate Concentration of hydrochloric acid Volume of hydrochloric acid Turbidity (solution goes cloudy)

3/5

Q4.Hypothesis: Increasing the concentration of hydrochloric acid increases the rate of reaction when reacting with sodium thiosulphate. What is the dependent variable (variable that is measured)?

Mass of sulphur produced Temperature Volume of hydrochloric acid Time taken for cross to disappear

4/5

Q5.Hypothesis: Increasing the concentration of hydrochloric acid increases the rate of reaction when reacting with sodium thiosulphate. Which of the following are the control variables? (Tick THREE)

Select three (3) boxes

Temperature Concentration of sodium thiosulphate Volume of hydrochloric acid Volume of sodium thiosulphate

5/5

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Rate of Reaction Required Practical 2

Please complete this exit quiz. This quiz will test your understanding of Rate of Reaction Required Practical 1

Question 1

Question 2

Question 3

Question 4

Question 5

Q1.Sodium thiosulphate reacts with hydrochloric acid to form sodium chloride, sulphur, water and sulphur dioxide. Which of the following is the state of sulphur at room temperature?

solid liquid gas aqueous

1/5

Q2.What are two reasons why the rate of the reaction increases as the concentration of hydrochloric acid increases when reacting with sodium thiosulphate?

Select two (2) boxes

More energetic collisions More frequent collisions More number of reacting particles per unit volume Larger volume of reactants in solution Lower activation energy

2/5

Concentration of sodium thiosulphate Concentration of hydrochloric acid Volume of hydrochloric acid Turbidity (solution goes cloudy)

3/5

Q4.Hypothesis: Increasing the concentration of hydrochloric acid increases the rate of reaction when reacting with sodium thiosulphate. What is the dependent variable (variable that is measured)?

Mass of sulphur produced Temperature Volume of hydrochloric acid Time taken for cross to disappear

4/5

Q5.Hypothesis: Increasing the concentration of hydrochloric acid increases the rate of reaction when reacting with sodium thiosulphate. Which of the following are the control variables? (Tick THREE)

Select three (3) boxes

Temperature Concentration of sodium thiosulphate Volume of hydrochloric acid Volume of sodium thiosulphate

5/5