Reaction Rate Graphs

What type of reaction is this?

• Endothermic
• Exothermic
• single replacement

• synthesis

• decomposition

Tags

NGSS.HS-PS1-4

Which letter best represents the activation energy?

• A

• B

• C

• D

• F

is this graph endothermic or exothermic?

What is the energy of the products?

• endothermic

• exothermic

• 300 kJ

• 225 kJ

• 75 kJ

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

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

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 because there are more collision sites

Tags

NGSS.HS-PS1-5

Smaller particle size allows for a _________ surface area to be exposed for the reaction.

• larger

• smaller

• rectangular

• spherical