Which two statements describe a mixture? A. it includes atoms of different elements
B. it can result from chemical bonding
C. its parts can be separated using physical means
D. it is a pure substance

Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs