Collision Theory Reaction Rate Equilibrium

Increase in temperature causes the particles to

• slow down

• move faster

• stay apart from each other

• move in the correct 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 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

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

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

• concentration

• total surface area

• temperature

• size

Which factors increase the rate of a reaction?

• increasing temperature

• increasing concentration

• increasing total surface area

• All of these

Tags

NGSS.HS-PS1-5

Which of the following IS a clue that a chemical change has occurred? 

• State of matter change
• Size Change
• Change in temperature
• Shape change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

a copper penny turning greenish after a few years.

• Chemical Change
• Physical Change

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-4

Which one shows that a chemical reaction has occurred?

• dissolving

• melting

• formation of a gas

• bending

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

a substance that is formed as the result of a chemical reaction

• Product 
• Reactant
• Starters
• Enders

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5