Rate of reaction iGCSE

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

• surface area

• pressure

• add a catalyst

Tags

NGSS.HS-PS1-5

Which of the following explains the meaning of effective collision?

• The collision where its energy is less than the activation energy

• The collision that has a low energy

• The collision which takes place before a reaction

• The collision that causes a reaction

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.HS-PS1-5

A ______________ is a substance that increases the rate of a reaction without being used up during the reaction. 

• catalyst
• product
• reactant
• solute

Tags

NGSS.HS-PS1-5

Why does using an acid with 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

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

• to slow down

• move faster

• collide higher

• in the right order

Tags

NGSS.HS-PS1-5

NGSS.HS-PS3-2

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

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

• concentration

• total surface area

• temperature

• size

Tags

NGSS.HS-PS1-5

Which factors increase the rate of a reaction?

• increasing temperature

• increasing concentration of solutions like acids

• increasing total surface area of solids

• All of these

Tags

NGSS.HS-PS1-5