GCSE Chemistry Specification

OCR B J258

Section C1.2: Why are there temperatures changes in chemical reactions?

Are you studying this syllabus?

You can track your progress by adding it to your account.

Add syllabus

#C1.2.1

distinguish between endothermic and exothermic reactions on the basis of the temperature change of the surroundings

#C1.2.2

draw and label a reaction profile for an exothermic and an endothermic reaction, identifying activation energy

#C1.2.3

explain activation energy as the energy needed for a reaction to occur

#C1.2.4

interpret charts and graphs when dealing with reaction profiles

#C1.2.5

calculate energy changes in a chemical reaction by considering bond breaking and bond making energies

#C1.2.6

carry out arithmetic computations when calculating energy changes

#C1.2.7

describe how you would investigate a chemical reaction to determine whether it is endothermic or exothermic

#C1.2.8

recall that a chemical cell produces a potential difference until the reactants are used up

#C1.2.9

evaluate the advantages and disadvantages of hydrogen/oxygen and other fuel cells for given uses