According to collision theory, which of these is NOT required for particles to do to react?

The particles must react with sufficient energy.
The particles must collide.
The particles must collide with the correct orientation.
The particles must be in gas form.
How does decreasing the concentration of a substance affect its reaction rate?
The reaction rate increases.
The reaction rate decreases.
The reaction rate is unchanged.The reaction rate increases. How does decreasing the temperature of a substance affect the reaction rate?
The reaction rate increases.
The reaction rate decreases.
The reaction rate is unchanged.

The particles must be in gas form is NOT required for particles to react according to collision theory.

Decreasing the concentration of a substance typically decreases the reaction rate.

Decreasing the temperature of a substance typically decreases the reaction rate.