Energetics, Rates of Reaction and Redox quiz (Singapore O-Level Chemistry, SEAB 6092) quiz
13questions. Pick an answer and you'll see why right away.
What happens to the temperature of the surroundings during an exothermic reaction?
In terms of stored energy, how do the products compare with the reactants in an endothermic reaction?
Why is a reaction exothermic in terms of bond breaking and bond forming?
According to collision theory, what two conditions must a collision meet for a reaction to occur?
Why does increasing the concentration of a solution increase the rate of reaction?
Why does powdering a solid reactant speed up its reaction with a liquid?
How does a catalyst increase the rate of a reaction?
Which statement about a catalyst is correct?
What is an enzyme?
On a graph of volume of gas produced against time, what does a flat (horizontal) line indicate?
What is oxidation in terms of electrons?
In the reaction , which species is the reducing agent?
Acidified potassium manganate(VII) is purple. What colour change shows it has been reduced by a reducing agent?