Kinetics

The collision theory states, particles must collide with ____ and ____ for a reaction to occur.

• sufficient rate and sufficient energy

• sufficient surface area and correct orientation

• sufficient catalyst and sufficient energy

• sufficient energy and correct orientation

More collisions correspond to a: 

• Faster reaction rate  
• Slower reaction rate
• Constant reaction rate 
• None of the above

Which of the following is NOT a factor affecting reaction rate?

• temperature
• catalysts
• particle size
• polarity

Which factors increase the rate of a reaction?

• increasing temperature

• increasing concentration

• increasing surface area

• all of the above

Tags

NGSS.HS-PS1-5

Which of the options below does NOT affect the rate of a reaction? 

• Concentration
• Temperature
• Time
• Catalyst

Increase in temperature of the reactants can do which of the following

• Slow collision frequency

• Allow less effective collision between the particles

• Neutralise the reaction

• increase collision between the particles thus increasing the rate.

Two reactant particles collide with proper orientation.The collision will be effective if the particles have

• high activation energy
• high ionization energy
• sufficient kinetic energy
• sufficient potential energy

Adding a catalyst to a chemical reaction changes the rate of reaction by causing

• a decrease in the activation energy
• an increase in the activation energy
• a decrease in the heat of reaction
• an increase in the heat of reaction

Tags

NGSS.HS-PS1-5

Temperature is a measure of average ________ energy of individual atoms.

• heat

• potential

• mechanical

• kinetic

Tags

NGSS.HS-PS3-2

A catalyst works by

• changing the order of the reaction
• increasing the temperature
• lowering the activation energy
• making the activated complex