Rate of Reactions

Which factors affect the rate of a reaction? Check all that apply

• temperature

• concentration

• surface area

• catalyst

Tags

NGSS.HS-PS1-5

Increase in temperature causes the particles to

• slow down

• move faster

• stay apart from each other

• move in the correct order

Tags

NGSS.MS-PS1-4

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

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

Catalyst helps to

• increase the amount of product obtained

• to lower the activation energy

• provide an alternative reaction route

• decrease the frequency of collision

Which factors increase the rate of a reaction?

• increasing temperature

• increasing concentration

• increasing total surface area

• All of these

Tags

NGSS.HS-PS1-5

You add more bodies into a "mosh pit" to hope for more collisions. You have increased

• temperature

• concentration

• pressure

• catalyst

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

Products will form faster if____________

• the particle size of the reactants are larger.
• temperature is decreased.
• concentration of the reactants are increased.
• the reaction is not stirred.

Tags

NGSS.HS-PS1-5