ARD When are bar graphs used?
Select all that apply.
when large changes over time need to be tracked
O when small changes in data are being tracked
R
when two sets of data are being compared
when a part is being compared to a whole

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.