Suppose you have a flashlight in your hand. Describe the transformations of energy that take place to allow that flashlight to give off light. Be sure to include where waste energy is given off.

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.