Practise MYP Chemistry questions on 5.18 Collision Theory and review the explanations to check your understanding.
Use these questions for topic practice and to find ideas you want to revisit in your notes or lessons.
A small increase in temperature can lead to a large increase in reaction rate. This is primarily because:
According to collision theory, which of the following combinations would describe a reaction that is likely to be very slow?
In the hill analogy for collision theory, what occurs if a reactant particle collides with exactly enough energy to reach the 'top of the hill'?
As the temperature of a reaction mixture increases, the average __________ of the reactant particles increases, leading to both more frequent encounters and harder hits.
True or False: In a heterogeneous reaction between a solid and a liquid, increasing the concentration of the liquid reactant increases the frequency of collisions at the surface of the solid.
The orientation of particles becomes less important
The activation energy decreases as temperature rises
The collision frequency doubles with every 1 degree Celsius rise
Many more particles suddenly have energy
High concentration and large surface area
Low temperature and high activation energy
High temperature and low activation energy
Low pressure and low activation energy
It rolls back down to the reactant side
It increases the activation energy of the system
It stops moving entirely and disappears
It overcomes the barrier and a reaction can occur
velocity
mass
volume
size
True
False
