What is the main difference between these two chemical formulas?
• h2o
• h2o2
a.) they represent two different substances
b.) they represent different states of the same substance
c.) they represent different elements combined chemically
d.) they represent a different number of copies of a substance

I think it's A

Explanation:

H202 is hydrogen peroxide

H20 is water

so she was walking and she stepped on warm jeffy , uh uh uhh dadye i just pooped my pants

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.