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G11 Rates of reactions E-day Project

Last updated 10 months ago
37 questions
Note from the author:

E-DAY PROJECT ON RATES OF REACTIONS

Open your textbook to the the start of Rates of Reactions. Follow along in your textbook as you work through this Formative.

You have two hours to complete this project. No reading time is necessary. After two hours, if you are still writing, Formative will force submit your answers (don't worry you won't lose the answers you have filled in if it submits automatically). If the power goes off and there is no wifi, I will ensure that your assessment is paused. Good luck!

E-DAY PROJECT ON RATES OF REACTIONS

Open your textbook to the the start of Rates of Reactions. Follow along in your textbook as you work through this Formative.

You have two hours to complete this project. No reading time is necessary. After two hours, if you are still writing, Formative will force submit your answers (don't worry you won't lose the answers you have filled in if it submits automatically). If the power goes off and there is no wifi, I will ensure that your assessment is paused. Good luck!

Using graphs to determine the rate of a reaction
Use this link if the videos are not playing. This is first two videos combined.
https://drive.google.com/file/d/1IO44R2N3BMLzvyxqvN4nyazHXxlfUp4W/view?usp=sharing
If you are watching the video in the google drive, watch for approximately 5:30 minutes before answering questions 1 - 3.
Required
1

When is the rate of the reaction the slowest during a chemical reaction?

1

What does the gradient of an amount or mass vs time graph indicate?

1

How do we know from the graph when a reaction has ended?

Measuring the rate of reaction in the laboratory
2

Use the graph to calculate the initial rate of reaction (in cm3.s-1). NO UNIT IN ANSWER.

1

What is the mathematical relationship between time taken for precipitate to disappear and the temperature of the solution?

1

How long did it take (in seconds) for the reaction to be completed? NO UNIT IN ANSWER.

2

Use this graph to calculate the average rate of reaction (in cm3.s-1) for the entire reaction. NO UNIT IN ANSWER.

Required
1

When is the rate of the reaction the fastest during a chemical reaction?

The factors that affect the rate of a reaction
If you are struggling to watch these videos below, please use this link:
https://drive.google.com/file/d/1cFvONoLSdFyVgrepupejz2rwcx6P3Vit/view?usp=sharing

Questions 9 - 11 Watch the first 9:20 minutes to answer
Questions 12 - 13 Watch from 9:20 - 17:00 minutes to answer
Questions 14 - 16 Watch the rest of the video
1

Organise these metals from most reactive to least reactive.

  1. potassium
  2. sodium
  3. lithium
1

What factor affecting rates of reactions was discussed in this video?

1

Of all the metals shown in this video, which metal is the most reactive?

1
Temperature directly proportional to the _______ of particles/molecules.
1

What is the minimum amount of energy needed by particles in order to produce a successful collision known as?

1

Which of these explanations of why concentration affects the rate of reaction is correct?

Required
1

In the laboratory, we can only manipulate the pressure of a

Required
1

Catalysts do not participate in the chemical reaction.

General questions on rates of reactions
Consider the following experiment conducted to measure the rate of reaction between a metal and acid.
2

What change will DECREASE the rate of reaction?

2

Write the name of the gas that is being collected in the inverted measuring cylinder.

1

Which of these Boltzmann distribution curves represents the effect of increasing the concentration of the acid in this experiment?

A student investigates the reaction between zinc carbonate and hydrochloric acid.
Her set-up is shown in the diagram. She performs the experiment a second time using the same set-up as shown in the diagram however this time she uses zinc carbonate powder.
2

Explain why the mass of the reaction flask decreases over time.

2

Identify the factor being manipulated in order to affect the rate of reaction.

1

What is the independent variable for this experiment? (See hint)

1

What is the dependent variable in this experiment?

1

Identify one controlled variable. Be specific in your answer.

Peter decides to do a similar experiment with magnesium ribbon and hydrochloric acid, using the items of apparatus shown in the diagram. The hydrochloric acid is in EXCESS.
2

The following sentences describe the steps of his method. Arrange them in the correct sequence (order)

  1. Pour 50 cm3 of 0,5 mol.dm-3 hydrochloric acid into the empty flask
  2. Drop the magnesium ribbon into the acid
  3. Clean the strip of magnesium ribbon to remove the magnesium oxide layer
  4. Record the volume of gas in the syringe every minute for 8 minutes
  5. Quickly put the stopper into the flask with the gas syringe
The syringes below show the position of the plunger at the start and end of the experiment:
1

What is the syringe reading at the start in cm3? Write number value ONLY.

1

What is the syringe reading at the end in cm3? Write number value ONLY.

1

What is the total volume of gas produced in cm3? Write number value ONLY.

2

The experiment was repeated. Which ONE of the following changes would cause the volume of gas collected to increase?

2

Consider this experiment you have learnt about. Identify the reactants used in this reaction. Select all that apply.

2

Which of the following changes will affect the measured rate of this reaction?

The following simulation shows a fixed number of particles of gas in a sealed container of fixed volume. The time (in picoseconds, ps is shown in the bottom left corner). A single factor is changed after the time begins while all other factors are controlled.
2

What change was made in this experiment?

1

Which of the following Boltzmann distribution curves show the effect of this change?

Watch the video clip of an experiment you have learnt about.
1

Which statement regarding this experiment is FALSE?

General laboratory skills
2

What is the volume reading below, in cm3?

Write number value only, no unit.

2

Which one of these would be most suitable to use to measure a liquid of volume of 9 cm3?

1
What is the reading on this thermometer? The temperature is _______ ℃.

THE END OF THE ASSESSMENT

Check your answers and then click "submit"