Before You Read Many parts of our lives are affected by repeated patterns. For
example, a calendar shows the patterns of weeks. Name some
repeated patterns that you see happening all the time. How
could you keep track of a pattern?

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.