Edexcel (9-1) Topic 7

Question 1 of 12

1

Which shows the correct reaction profile for an endothermic reaction?

Select one of the following:

Explanation

Question 2 of 12

1

Bonding breaking is an ❌ process, whilst bond making is an ❌ process. In an exothermic reaction, the energy release from forming bonds is ❌ than the energy used to break them.

Select option below to complete the highlighted text

endothermic

exothermic

higher

lower

Explanation

Question 3 of 12

1

Two solutions are added together. The temperature of the reaction goes down. What type of reaction is this?

Select one of the following:

exothermic
endothermic

Explanation

Question 4 of 12

1

Fill the blank space to complete the text.

The temperature of 50 ml acid, in a 100 ml beaker was 18 Celsius. 2 g of calcium carbonate was added, and when it finished reacting the temperature was now 42 Celsius. The temperature change was Celsius.

Explanation

Question 5 of 12

1

Which line represents the fastest overall reaction?

Select one of the following:

A
B
C

Explanation

Question 6 of 12

1

Select the correct statement about how the rate changes during the reaction.

Select one of the following:

it increases from zero
it increases, then decreases to zero
it decreases to zero
it stays the same

Explanation

Question 7 of 12

1

Select all the factors that can change the rate of reaction. (hint: there's more than one)

Select one or more of the following:

pressure
volume
concentration
catalysts
temperature
surface area
height
size of container

Explanation

Question 8 of 12

1

Fill the blank space to complete the text.

Using data from the table, what was the mean rate of reaction?

cm3/s

Explanation

Question 9 of 12

1

The activation energy for a reaction was measured with and without a catalyst. Select the value that was the value for the catalysed reaction.

Select one of the following:

55 kJ/mol
72 kJ/mol

Explanation

Question 10 of 12

1

Increasing the ❌ of reactants frees up more particles that are available to ❌ right away. This doesn't add more particles in to the reaction, it only allows particles that would have once had to wait for other particles to ❌ first to be available. This leads to more ❌, successful collisions and so the rate of reaction increases.

Select option below to complete the highlighted text

collide

react

frequent

surface area

concentration

temperature

Explanation

Question 11 of 12

1

Which of the following is not an example of an endothermic reaction?

Select one of the following:

electrolysis
photosynthesis
thermal decomposition
combustion

Explanation

Question 12 of 12

1

Fill the blank space to complete the text.

Using the given bond energies, calculate the overall energy change of this reaction. (remember that bond breaking is a positive energy process [requires energy], and bond making is a negative energy process [releases energy]).

Overall energy change is kJ/mol

	Created by https:// revisechemistry.uk about 6 years ago

GCSE Chemistry (Edexcel) Quiz on Edexcel (9-1) Topic 7, created by https:// revisechemistry.uk on 03/23/2018.

Edexcel (9-1) Topic 7

Edexcel (9-1) Topic 7

Question 1 of 12

Which shows the correct reaction profile for an endothermic reaction?

Select one of the following:

Explanation

Question 2 of 12

Bonding breaking is an ❌ process, whilst bond making is an ❌ process. In an exothermic reaction, the energy release from forming bonds is ❌ than the energy used to break them.

Select option below to complete the highlighted text

Explanation

Question 3 of 12

Two solutions are added together. The temperature of the reaction goes down. What type of reaction is this?

Select one of the following:

Explanation

Question 4 of 12

Fill the blank space to complete the text.

The temperature of 50 ml acid, in a 100 ml beaker was 18 Celsius. 2 g of calcium carbonate was added, and when it finished reacting the temperature was now 42 Celsius. The temperature change was Celsius.

Explanation

Question 5 of 12

Which line represents the fastest overall reaction?

Select one of the following:

Explanation

Question 6 of 12

Select the correct statement about how the rate changes during the reaction.

Select one of the following:

Explanation

Question 7 of 12

Select all the factors that can change the rate of reaction. (hint: there's more than one)

Select one or more of the following:

Explanation

Question 8 of 12

Fill the blank space to complete the text.

Using data from the table, what was the mean rate of reaction? cm3/s

Explanation

Question 9 of 12

The activation energy for a reaction was measured with and without a catalyst. Select the value that was the value for the catalysed reaction.

Select one of the following:

Explanation

Question 10 of 12

Select option below to complete the highlighted text

Explanation

Question 11 of 12

Which of the following is not an example of an endothermic reaction?

Select one of the following:

Explanation

Question 12 of 12

Fill the blank space to complete the text.

Using the given bond energies, calculate the overall energy change of this reaction. (remember that bond breaking is a positive energy process [requires energy], and bond making is a negative energy process [releases energy]). Overall energy change is kJ/mol

Explanation

Using data from the table, what was the mean rate of reaction?

cm3/s

Using the given bond energies, calculate the overall energy change of this reaction. (remember that bond breaking is a positive energy process [requires energy], and bond making is a negative energy process [releases energy]).

Overall energy change is kJ/mol