Collision Theory

A condition that needs to be met for a chemical reaction to occur.

• The substance must be homogeneous.

• The temperature should be kept constant.

• Particles should maintain a certain distance from each other.

• Particles in the substance must collide and have enough energy.

Tags

NGSS.HS-PS1-5

The factor that will slow down the rate of a chemical reaction.

• Manual stirring of the substance.

• Placing substance in a hot water.

• Placing products in iced water.

• Placing reactants in an ice bath.

Tags

NGSS.HS-PS1-5

Condition that needs to be met for a chemical reaction to occur.

• Substance must be homogenous.

• Temperature should be kept constant.

• Particles should maintain a certain distance to each other.

• Particles in the substance must collide and have enough energy.

Tags

NGSS.HS-PS1-5

The factor that will slow down the rate of chemical reaction.

• Manual stirring of the substance.

• Placing substance in a hot water.

• Placing products in iced water.

• Placing reactants in ice bath.

Tags

NGSS.HS-PS1-5

According to the collision theory, increasing the pressure of a gaseous reactant mixture will increase the reaction rate because:

• It increases the temperature of the mixture

• It decreases the volume of the mixture

• It increases the number of collisions per second

• It decreases the activation energy required for the reaction

According to collision theory, for a reaction to occur, particles must collide with:

• Low energy and any orientation

• Sufficient energy and the correct orientation

• High energy and any orientation

• Sufficient energy but orientation does not matter

Tags

NGSS.HS-PS2-3

Which component of collision theory is represented in the image?

• Correct orientation of molecules

• molecules collide with sufficient energy

• Products become reactants

• Molecules form an activated complex

In a chemical reaction, if the concentration of reactants is increased, what happens to the reaction rate?

• It decreases

• It increases

• It remains unchanged

• It initially increases, then decreases

Tags

NGSS.HS-PS1-5

What is meant by collision frequency in the context of collision theory?

• The number of collisions that result in a reaction

• The number of collisions per unit time

• The speed at which particles move

• The energy required for a collision to be effective

Which of the following is necessary for a collision to be considered effective?

• Particles must collide with low energy

• Particles must collide with the correct orientation

• Particles must collide at a low frequency

• Particles must collide in a vacuum