2. Iron has a density of 7.86 g/cm). A sample of an unknown metal is measured and found to be 2.25 cm x 1.5 cm x 2.25 cm. The mass of the sample is 55.75 g. Is the sample Iron? Explain.

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.