Reaction Rates Review

To make a reaction occur the molecules must

• collide in the correct orientation

• have very little energy within the bonds

• be at a high concentration

• remain in the same state of matter

Tags

NGSS.HS-PS1-5

Which of the following affects the speed of a chemical reaction?

• surface area

• amount of the light input

• the person conducting the experiment

• the dropper and hot plate that is used

Tags

NGSS.HS-PS1-5

The data of a chemical reaction is shown below

Temperature °C: 30 time of the reaction (s): 95

Temperature: 60 time of the reaction (s): 40

Temperature: 90 time of the reaction (s): 20

What would you expect for the time for the reaction to occur if you used a temperature of 15° C?

• 15 s

• 30 s

• 80 s

• 110 s

Tags

NGSS.HS-PS1-5

An increase in temperature of the reactants can do one of the following:

• Slow collision frequency

• Allow less effective collisions between particles

• Cause particles to lose speed

• Increase collisions between the particles and increase the rate

Tags

NGSS.HS-PS1-5

What factors affect reaction rate?

• size of atoms

• temperature

• concentration

• surface area

• catalysts

Tags

NGSS.HS-PS1-5

What is the rate at which reactants are converted to products?

• Inhibitor Rate

• Catalyst Rate

• Reaction Rate

• Activation Rate

Tags

NGSS.HS-PS1-5

Which factor increases reaction rates by causing particles to move faster?

• Increase in Pressure of gases

• Decrease in Surface Area

• Increase in Concentration

• Decrease in Temperature

Tags

NGSS.HS-PS1-5

Which factor increases reaction rates by increasing the speed of particles?

• Increase in Concentration

• Increase in Temperature

• Increase in particle size

• Agitation/Stirring

Tags

NGSS.HS-PS1-5

What are the 5 things that can affect reaction rate?

• Volume, Time, Catalysts, Inhibitors, Enzymes

• Temperature, Concentration, Surface Area, Pressure, Catalysts

• Concentration, Surface Area, Agitation, Inhibitors, Enzymes

• Temperature, Pressure, Volume, Time, Catalysts

Tags

NGSS.HS-PS1-5

What is necessary for a chemical reaction to occur?

• Correct orientation of particles when they collide

• particle collisions

• an increase or decrease in temperature

• particle collisions with sufficient energy

• a catalyst

Tags

NGSS.HS-PS1-5