Gen Chem Matter & Energy

Is this reaction exothermic or endothermic?

 What do arrows E & B represent?

In terms of energy, why does a catalyst speed up a reaction?

Of what is temperature a measure?

On a Potential Energy Diagram, when a catalyst is added do the reactants and products change?

State the 2 conditions necessary for molecules to have Effective Collisions

In terms of energy of the reactants and products, define endothermic

State the units for measuring a) heat b) temperature

What is defined as the minimum amount of energy added to the reactants in order for a reaction to occur (or get past the energy barrier)

Identify A & E

Which letter would represent the energy barrier?

At what temperature does molecular motion or Kinetic energy cease?

2 or more elements bonded in a set ratio is a ____.

2 or more substances with no set ratio uniformly distributed is a ___.

What is the composition of this mixture?

An effective collision is one that ___________

Breaking a bond _________ energy and making a bond _______ energy

A catalyst can help speed up a reaction by providing an ___   _____ for the reaction.

In what layer of the Earth's atmosphere do we reside and where our weather occurs?

As altitude in the atmosphere increases, the pressure ________.
Explain