What terms refer to a vertical column in the periodic table of elements?
A) group or family
B) group or series
C) period or family
D) period or series
E) none of the above
Question 2
Which of the following is a basic step in the scientific method?
A) perform an experiment and collect data
B) analyze experimental data and propose a hypothesis
C) test a hypothesis and state a theory or law
D) all of the above
E) none of the above
