What is a hypothesis?
a. a question that cannot be scientifically tested.
b. a statement that can be tested through a scientific investigation.
c. a description of the steps involved in an experiment.
d. a statement that summarizes the results of an expression.
i pick b, but i'm not 100% sure.

Hypothesis is a guess on what might happen during the experiment.

B. a statement that can be tested through a scientific investigation.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.