Answer:
Leaming Task 3
Directions: Use the term to correctly fill in the blanks
Catalyst collisions
dillute heat
Surface area Temperature
concentration energy
Rate of reaction
1. A freshly exposed surface of metallic sodium tarnishes almost instantly if exposed to air and
moisture, while iron will slowly tum to rust under the same conditions. In these two situations,
the
refers to how quickly or slowly reactants turn into products
2. Adding
will increase the rate of reaction because this causes the
particles of the reactants to move more quickly, resulting in more collisions and more
3 Removing heat will lower the
causing the particles of the reactants to
slowdown, resulting in less frequent collisions
4
refers to how much solute is dissolved in a solution. If there is a greater
concentration of reactant particles present there is a greater chance that
among them will occur. More collisions mean a higher rate of reaction
5. A concentrated acid solution will react more quickly than a
acid solution
because there are more molecules present increasing the chance of collisions.
6 Grains of sugar have a greater
than a solid cube of sugar of the same
mass, and therefore will dissolve quicker in water
7.A
for example an enzyme is used to speed up a chemical reaction but is
not used up in the reaction itself
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