Rate

What is the rate of reaction?

• How fast a reaction is 

• How big a reaction is

• How loud a reaction is

• How much gas a reaction produces

Tags

NGSS.HS-PS1-5

Which factors affect the rate of a reaction?

• temperature

• concentration

• size

• pressure

• catalyst

Tags

NGSS.HS-PS1-5

Why does a higher temperature increase the rate of a reaction?

• It increases both the frequency collision and energy of reactant particles

• It only increases the frequency of collision

• It only increases the energy of reactant particles

• It reduces the activation energy of the reaction

Tags

NGSS.HS-PS1-5

Which factors increase the rate of a reaction?

• increasing temperature

• increasing concentration

• increasing total surface area

• All of these

Tags

NGSS.HS-PS1-5

how often or fast something happens

• Time

• Movement

• Pattern

• Rate

Tags

NGSS.HS-PS4-1

Which term describes a rate of change that increases more and more rapidly over time?

• Linear Growth

• Decline

• Exponential Growth

• Static Growth

How could we make this reaction happen more quickly?

• Decrease the concentration of the acid

• crush the chalk to increase the surface area

• Put the test tube in an ice bath

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

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 reactant particles

• it increases the frequency of collision

Tags

NGSS.HS-PS1-5

Grinding an effervescent tablet into powder increases the rate of reaction due to increase of

• concentration

• total surface area

• temperature

• size