What does catalyst do to a reaction?

• Slows down the reaction

• Nothing changes

• Speeds up the reaction

What do you call the energy that is required to start a reaction?

• Alternative energy

• Activation energy

• Atmospheric energy

Which of the reaction pathway shows the catalysed reaction?

• 1

• 2

Which of these reactions are easier to overcome the activation energy barrier?

• A

• B

What happen to the rate of reaction when a catalyst is added to it?

• Increases

• Decreases

• Nothing changes

A catalyst is __________-specific

• Radioactive

• Reactive

• Reaction

What happens to the molecule of C₂H₄ and H₂ at 4?

• H₂ breaks its bond, bonded on the catalyst surface

• Double bond of C₂H₄ is broken, 2 C atoms bond to catalyst

• H atoms migrate, collide with the bound C species and react

Does the catalyst change the position of equilibrium?

• Yes

• No

Catalysts may be in the state of ___________.

• Solid and liquid only

• Solid and gases only

• Liquid and gases only

• Solid, liquid or gases

In homogeneous catalysis, reactants and catalysts are in the ___________ phase with each other.

• Different

• Same