Reaction Rates Review

What is the definition for the rate of a chemical reaction.

• Change in concentration over time

• Change in concentration of the reactants or products per unit time

• Change in concentration of any one reactant or product per unit time

• Change in concentration of all reactants or products per unit time

Tags

NGSS.HS-PS1-5

In order for a reaction to occur, particles must...

• Collide

• Be in contact with each other

• Have enough energy

• All of the above

Use this data to calculate the average rate for this reaction

• 0.95

• 0.833

• 0.95 cm³/s

• 0.833 cm³/s

Tags

NGSS.HS-PS1-5

The name given to the specific energy required for an effective collision to occur....

• Effective energy

• Activation energy

• Successful energy

• Chemical energy

In this reaction profile, what is quantity A?

• Activation energy

• Reaction energy

• Collision energy

• Effective energy

Tags

NGSS.HS-PS1-4

Complete this sentence...the higher the activation energy,...

• The faster the reaction

• The slower the reaction

Complete this sentence.....the lower the activation, ......

• The faster the reaction

• The slower the reaction

Tags

NGSS.HS-PS1-5

What is the name of the catalyst used to speed up the decomposition of hydrogen peroxide?

• Manganese Oxide

• Magnesium Oxide

• Manganese Dioxide

• Manganese Oxide

In the reaction between sodium thiosulphate and hydrochloric acid, how do you know the reaction is complete?

• A smell is produced

• Effervescence is observed

• The cross disappears

• The solution goes clear

Tags

NGSS.MS-PS1-2

As concentration increases, rate of reaction

• Increases

• Decreases

Tags

NGSS.HS-PS1-5