Match the following pairs of atoms with the statement that correctly describes both atoms in the pair:

In an ethane molecule (C2H6), each carbon atom binds to _______ hydrogen atoms.

The following elements make up >95% of living matter except:  

Which of the following statements are true about buffer solutions? Select all that apply.

Carbon 12, 13, and 14 are isotopes of the same element. They share the same place on the periodic table but possess varying numbers of neutrons. If carbon 12 has 6 protons, how many neutrons will carbon 14 have?

Which of the following reactions is that of an acid?

The pH scale is based on

Isomers are compounds with different structural formulas but identical ___________ formulas

Which statements are TRUE about ionic bonds? Select all that apply.

Cholesterol is composed primarily of carbon and hydrogen atoms, which have similar electronegativities. Therefore, one would expect cholesterol to be