Activation Energy and Endo/Exo

What is the activation energy?

• The energy of the products
• The energy of the reactants
• The minimum energy needed by the reactants to form the products.
• The energy lost in the reaction

According to collision theory, what must the reactants have in order to form products?

• The right size
• The right shape
• Enough energy
• Nothing

What kind of reaction is this?

• Endothermic
• Exothermic
• Cannot be determined

How does a catalyst work in speeding up a reaction?

• By lowering the activation energy or reaction

• by giving them more energy

• by making them more available

What term is given to a reaction which transfers heat energy to the surroundings?

• Endothermic

• Reversible

• Exothermic

• Exotermic

When barium hydroxide and ammonium chloride react, the temperature of the mixture decreases. What kind of reaction is this?

• Endothermic

• Decomposition

• Exothermic

• Indothermic

What letter represents the energy of the products?

• A
• B
• C
• D

What type of reaction is this?

• Endothermic
• Exothermic

What does a catalyst do?

• Speeds up reactants

• Speeds up a chemical reaction

• Speeds up products

• Speeds up particles

What do you call a biological catalyst?

• Product

• Reactant

• Biological reaction

• Enzyme