Which of these items is a substance that is made from two or more different elements? A. Element

B. Mixture

C. Oxygen

D. Compound

b mixture

Explanation:

if you mix two or more things makes a mixture

thats how its supposed to be

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.