Edexcel (9-1) Topic 7

Pregunta 1 de 12

1

Which shows the correct reaction profile for an endothermic reaction?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 2 de 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.

Arrastra y suelta para completar el texto.

endothermic

exothermic

higher

lower

Explicación

Pregunta 3 de 12

1

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

Selecciona una de las siguientes respuestas posibles:

exothermic
endothermic

Explicación

Pregunta 4 de 12

1

Rellena el espacio en blanco para completar el texto.

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.

Explicación

Pregunta 5 de 12

1

Which line represents the fastest overall reaction?

Selecciona una de las siguientes respuestas posibles:

A
B
C

Explicación

Pregunta 6 de 12

1

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

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 7 de 12

1

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

Selecciona una o más de las siguientes respuestas posibles:

pressure
volume
concentration
catalysts
temperature
surface area
height
size of container

Explicación

Pregunta 8 de 12

1

Rellena el espacio en blanco para completar el texto.

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

cm3/s

Explicación

Pregunta 9 de 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.

Selecciona una de las siguientes respuestas posibles:

55 kJ/mol
72 kJ/mol

Explicación

Pregunta 10 de 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.

Arrastra y suelta para completar el texto.

collide

react

frequent

surface area

concentration

temperature

Explicación

Pregunta 11 de 12

1

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

Selecciona una de las siguientes respuestas posibles:

electrolysis
photosynthesis
thermal decomposition
combustion

Explicación

Pregunta 12 de 12

1

Rellena el espacio en blanco para completar el texto.

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

	Creado por https:// revisechemistry.uk hace más de 6 años

GCSE (Edexcel) Chemistry Test sobre Edexcel (9-1) Topic 7, creado por https:// revisechemistry.uk el 23/03/2018.

Edexcel (9-1) Topic 7

Pregunta 1 de 12

Which shows the correct reaction profile for an endothermic reaction?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 2 de 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.

Arrastra y suelta para completar el texto.

Explicación

Pregunta 3 de 12

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

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 4 de 12

Rellena el espacio en blanco para completar el texto.

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.

Explicación

Pregunta 5 de 12

Which line represents the fastest overall reaction?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 6 de 12

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

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 7 de 12

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

Selecciona una o más de las siguientes respuestas posibles:

Explicación

Pregunta 8 de 12

Rellena el espacio en blanco para completar el texto.

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

Explicación

Pregunta 9 de 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.

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 10 de 12

Arrastra y suelta para completar el texto.

Explicación

Pregunta 11 de 12

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

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 12 de 12

Rellena el espacio en blanco para completar el texto.

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

Explicación

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