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G11 Rates of reactions E-day Project

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Last updated about 1 year ago
37 questions
Note from the author:
Using graphs to determine the rate of a reaction
Required
1
1
1
Measuring the rate of reaction in the laboratory
2
1
1
2
Required
1
The factors that affect the rate of a reaction
1
1
1
1
1
1
Required
1
Required
1
General questions on rates of reactions
2
2
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General laboratory skills
2
2
1

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!

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.
Question 1
1.

Question 2
2.

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

Question 3
3.

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

Question 4
4.

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

Question 5
5.

Question 6
6.

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

Question 7
7.

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

Question 8
8.

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
Question 9
9.

Question 10
10.

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

Question 11
11.

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

Question 12
12.
Temperature directly proportional to the _______ of particles/molecules.
Question 13
13.

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

Question 14
14.

Question 15
15.

Question 16
16.

Consider the following experiment conducted to measure the rate of reaction between a metal and acid.
2
2
1
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
2
1
1
1
2
1
1
1
2
Question 30
30.

Question 31
31.

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
1
Watch the video clip of an experiment you have learnt about.
Question 34
34.

Question 35
35.

What is the volume reading below, in cm3?

Write number value only, no unit.

Question 36
36.

Question 37
37.
What is the reading on this thermometer? The temperature is _______ ℃.

THE END OF THE ASSESSMENT

Check your answers and then click "submit"

When is the rate of the reaction the slowest during a chemical reaction?
In the first few seconds
In the middle of the reaction
In the last few seconds of the reaction
When the reaction is complete
What is the mathematical relationship between time taken for precipitate to disappear and the temperature of the solution?
inversely proportional
directly proprtional
When is the rate of the reaction the fastest during a chemical reaction?
In the first few seconds
In the middle of the reaction
In the last few seconds of the reaction
When the reaction is complete
Organise these metals from most reactive to least reactive.
potassium
sodium
lithium
Which of these explanations of why concentration affects the rate of reaction is correct?
The higher the concentration of the solution, the lower the activation energy, therefore the faster the rate of reaction
The higher the concentration of the solution, the more particles are present per unit volume and therefore the greater the proportion of effective/successful collisions
The greater the volume of the solution, the greater the concentration of the solution and therefore the faster the rate of reaction
The higher the concentration of the solution, the higher the kinetic energy of the particles, therefore the faster the rate of reaction
In the laboratory, we can only manipulate the pressure of a
solid
liquid
gas
solution
Catalysts do not participate in the chemical reaction.
True
False
Question 17
17.

Question 18
18.

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

Question 19
19.

Question 20
20.

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

Question 21
21.

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

Question 22
22.

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

Question 23
23.

What is the dependent variable in this experiment?

Question 24
24.

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.
Question 25
25.

The syringes below show the position of the plunger at the start and end of the experiment:
Question 26
26.

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

Question 27
27.

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

Question 28
28.

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

Question 29
29.

Consider this experiment you have learnt about. Identify the reactants used in this reaction. Select all that apply.
sulfuric acid
hydrochloric acid
sulfur hydroxide
sodium thiosulfate
Which of the following changes will affect the measured rate of this reaction?
Increasing the size of the flask
Decreasing the thickness/darkness of the X drawn on the paper
Decreasing the volume of the solutions
Increasing the concentration of the solution in the flask
All of these will affect the rate of reaction

Question 32
32.

Question 33
33.

Which statement regarding this experiment is FALSE?
It uses solution A and solution B containing potassium iodate and starch
The rate of the reaction for each treatment is not measured during the experiment (i.e. we have no idea how the rate of the reaction changes during the experiment)
A colour change is qualitative
It is known as the iodine watch experiment
Which one of these would be most suitable to use to measure a liquid of volume of 9 cm3?

A
B
C
D
What change will DECREASE the rate of reaction?
Using powdered metal
Adding water to the flask
Using a more concentrated acid
Heating the flask
Which of these Boltzmann distribution curves represents the effect of increasing the concentration of the acid in this experiment?
This effect cannot be shown on a Boltzmann distribution curve
The following sentences describe the steps of his method. Arrange them in the correct sequence (order)
Pour 50 cm3 of 0,5 mol.dm-3 hydrochloric acid into the empty flask
Quickly put the stopper into the flask with the gas syringe
Drop the magnesium ribbon into the acid
Record the volume of gas in the syringe every minute for 8 minutes
Clean the strip of magnesium ribbon to remove the magnesium oxide layer
The experiment was repeated. Which ONE of the following changes would cause the volume of gas collected to increase?
Using 0,8 mol.dm-3 acid
Using 100cm3 of acid
Increasing the temperature of the acid
Using a longer piece of magnesium ribbon
Chopping the magnesium ribbon into smaller pieces
What change was made in this experiment?
Pressure was increased
Temperature was increased
Pressure was decreased
Temperature was decreased
Which of the following Boltzmann distribution curves show the effect of this change?
This effect cannot be shown on a Boltzmann distribution curve