The sun provides the main source of energy for many of the phenomena that occur on Earth.

True

False

49. Which of the following statements regarding chemical equilibrium is true? Equilibrium is shown with a single arrow and/or an equal sign. A system at equilibrium maintains the concentrations of all reactants/products over time.

What is a lithosphere

Describe porosity and how that affects groundwater infiltration.

Match the term to its description. Gravitational energy Answer 1 Mechanical energy Answer 2 Nuclear energy Answer 3 Thermal energy Answer 4 Internal energy caused by vibrations of atoms and molecules The potential energy of position The energy of an

List the 3 mole equalities.

Why does a higher concentration make a reaction faster? There are more collisions per second and the collisions are of greater energy. Collisions occur with greater energy. There are more collisions per second.

A property of metals is high thermal conductivity which is

Do exorthermic reactions make surrounding hotter?

What's a certain indicator that a molecule is polar?

If an electron fell to a lower orbit or energy level, energy would be a. created. b. emitted. c. absorbed. d. transferred.