Factors of Rate of Reaction

Which factors increase the rate of a reaction?

• increasing temperature

• increasing concentration

• increasing total surface area

• All of these

Tags

NGSS.HS-PS1-5

Why does breaking up a solid reactant increase the rate of reaction?

• it creates more solid

• it creates more energy

• it increases the total surface area

• it increases the concentration

Why does a higher concentration increase the rate of reaction?

• it increases the amount of reactants

• it lowers the activation energy

• it increases the energy of particle collisions

• it increases the frequency of collisions

Tags

NGSS.HS-PS1-5

Which graph shows the effect of increasing temperature on the rate of reaction of calcium carbonate with dilute hydrochloric acid?

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Tags

NGSS.HS-PS1-5

Order the letters from highest to lowest rate of reaction.

• > B > C > D

• > BC > D (B and C have the same rate)

• > B > CD (C and D have the same rate)

• > C > B > A

Tags

NGSS.HS-PS1-5

List four factors that affects the rate of a reaction

• temperature

• concentration

• surface area

• volume

• catalysts

Tags

NGSS.HS-PS1-5

How does a catalyst work in speeding up a reaction?

• By lowering the activation energy or reaction

• by giving them more energy

• by making them more available

The following graph shows two different reaction pathways for the same overall reaction at the same temperature. Which pathway is slower and why?

• Red, because the activation energy is larger

• Blue, because the activation energy is lower

• both reaction progress at the same rate

Tags

NGSS.HS-PS1-4

What does NOT happen when the temperature is increased?

• Particles collide more often

• Particles collide with more energy

• Particles move faster

• More particles collide in the correct orientation

Tags

NGSS.HS-PS1-5

The ______________is required to break the bonds of the reactants.

• Carbonic energy

• Activation energy

• Plutonic energy

• Energi Gaib