Chemistry C2 GCSE Revision

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22 cards   |   Total Attempts: 182
  

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If you increase the temperature in a reversible reaction, what happens?
The endothermic reaction will increase.
If you decrease the temperature in a reversible reaction, what happens?
The exothermic reaction will increase.
If you increase the pressure in a reversible reaction, what happens?
The high pressure will favour the reaction which produces less volume.
If you decrease the pressure in a reversible reaction, what happens?
The low pressure will favour the reaction which produces more volume.
What is the concentration used in the Haber Process?
200 Atmospheres.
What is the temperature used in the Haber Process?
450°C.
What is an exothermic reaction?
A reaction which gives out heat.
What is an endothermic reaction?
A reaction which takes in heat.
In an endothermic reaction, how does the temperature change?
The temperature decreases.
In an exothermic reaction, how does the temperature change?
The temperature increases.
Explain what is meant by the term isotope.
Isotopes are different atomic forms of the same element, which have the same number of protons but a different number of neutrons.
What types of elements bond ionically?
Non-metals and metals.
Why do ionic structures have high melting and boiling points?
Because they have very strong chemical bonds between all the ions in the giant structure.
Why do ionic structures conduct electricity when they are in solution?
Because when dissolved, the ions are separate and can carry the charge.
Why do ionic structures conduct electricity when they are molten?
Because the ions are free and they can carry the charge.