AQA (9-1) Topic 5

Frage 1 von 8

1

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Oxygen and hydrogen will not react until a lighted splint is used. This is because must be supplied to the reaction to start it.

Erklärung

Frage 2 von 8

1

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

Wähle eine der folgenden:

exothermic
endothermic

Erklärung

Frage 3 von 8

1

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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.

Erklärung

Frage 4 von 8

1

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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

Erklärung

Frage 5 von 8

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.

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endothermic

exothermic

greater

smaller

Erklärung

Frage 6 von 8

1

Which shows the correct reaction profile for an endothermic reaction?

Wähle eine der folgenden:

Erklärung

Frage 7 von 8

1

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

Wähle eine der folgenden:

electrolysis
combustion
photosynthesis
thermal decomposition

Erklärung

Frage 8 von 8

1

If the energy change of a reaction has a positive (+) value, then the energy change is ❌; if is has a negative (-) value, then the change is ❌

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endothermic

exothermic

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GCSE Chemistry (AQA) Quiz am AQA (9-1) Topic 5, erstellt von https:// revisechemistry.uk am 12/02/2018.

AQA (9-1) Topic 5

Frage 1 von 8

Fülle die Lücke, um den Text zu vervollständigen

Oxygen and hydrogen will not react until a lighted splint is used. This is because must be supplied to the reaction to start it.

Erklärung

Frage 2 von 8

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

Wähle eine der folgenden:

Erklärung

Frage 3 von 8

Fülle die Lücke, um den Text zu vervollständigen

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.

Erklärung

Frage 4 von 8

Fülle die Lücke, um den Text zu vervollständigen

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

Erklärung

Frage 5 von 8

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.

Klicke und ziehe, um den Text zu vervollständigen.

Erklärung

Frage 6 von 8

Which shows the correct reaction profile for an endothermic reaction?

Wähle eine der folgenden:

Erklärung

Frage 7 von 8

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

Wähle eine der folgenden:

Erklärung

Frage 8 von 8

If the energy change of a reaction has a positive (+) value, then the energy change is ❌; if is has a negative (-) value, then the change is ❌

Klicke und ziehe, um den Text zu vervollständigen.

Erklärung

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