COLLISION THEORY

What is collision theory?

• Molecules must collide in the correct orientation with enough energy to bond.

• Molecules need enough energy to collide and react.

• Atoms constantly collide and react.

• The minimum energy needed for atoms to react

The collisions which bring about a chemical reaction are called: 

• Consistent collisions
•  Normal collisions 
• Effective collisions 
• None of the above

More collisions correspond to a: 

• Faster reaction rate  
• Slower reaction rate
• Constant reaction rate 
• None of the above

What criteria must be met for reactant collisions to result in a successful product?

• The reactants must collide with each other

• The reactants must collide with enough energy and be in the right positions

• The reactants must have enough energy to form the activated complex

Which of the following is/are the fundamental idea(s) of collision theory?

• Molecules react by colliding together
• The effective collisions must occur with certain minimum amounts of energy 
• In a large sample, the greater the number of effective collisions, and the faster the rate of reaction
• All of the above

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 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