You are given a compound that contains the elements hydrogen, oxygen, and carbon. a) How would you attempt
to separate the compound into containers with only pure elements in them?
b) Once you separated the elements
from each other, what could you do to verify they are in fact elements and not compounds? (This is a multi-part
question. Make sure to answer the entire question.)

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.

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.