Rates of reactions

Which factors affect the rate of a reaction?

• temperature

• concentration

• surface area

• the size of a reaction container

• catalyst

Tags

NGSS.HS-PS1-5

A temperature increase causes the particles to ......

• to slow down

• move faster

• collide higher

• in the right order

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 particle collisions

• it increases the frequency of particle collisions

Tags

NGSS.HS-PS1-5

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

• it increases both the frequency and energy of particle collisions

• it only increases the frequency of particle collisions

• it only increases the energy of particle collisions

• it reduces the activation energy of the reaction

Tags

NGSS.HS-PS1-5

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

Breaking up a lump of potassium into smaller pieces increases the rate of reaction due to increased

• concentration

• surface area

• temperature

• reactants

Tags

NGSS.HS-PS1-5

A temperature increase causes the particles ......

• to slow down

• move faster

• collide higher

• in the right order

Tags

NGSS.HS-PS1-5

Which factors increase the rate of a reaction?

• increasing temperature

• increasing concentration

• increasing surface area

• All of these

Tags

NGSS.HS-PS1-5

The rate of a reaction is how _____________ a reaction occurs.

• Quickly

• Easily

• Unusually

• Differently

Tags

NGSS.HS-PS1-5

Decreasing the size of the reaction container means that particles are ___________ together.

• Happy

• Never

• Paired

• Closer

Tags

NGSS.HS-PS1-5