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Raising the temperature of an exothermic reaction will cause the equilibrium to move to the left, reducing the proportion of the product in the mixture. Exothermic reactions release heat and the reverse ...

This really depends on the question; for example if it is asking you if Source C supports the evidence given in Source A you must make sure you focus throughout on comparing and contrasting the evidence g...

It slightly depends on the exam board, but if you're able to prepare your answers in advice make sure you know your responses inside out! An oral exam can be a stressful environment so the more familiar y...

(draws two right angled triangles, one with sides 3 and 4 units with the hypotenuse labelled 'x', one with a side labelled 4 units and 'Y' with the hypothenuse labelled 5 units).
The answer is in two...

Na+ ions are actively transported out of the epithelial cell into the blood by an Na+ pump. This requires ATP. This establishes a concentration gradient of Na+, with a high Na+ concentration in the ileum ...