Can you name the four carbon-based molecules that make up about 25% of most human cells?

Nitrogen (N), oxygen (O), sulfur (S), phosphorus (P), chlorine (Cl), bromine (Br), iodine (I) as well as the metals lithium (Li) and magnesium (Mg) are all considered to be __________. Why?

Are all of these structures considered to be carbon skeletons? Can you explain why?

This functional group is known as a ___________.

A functional group with a Sulfur atom covalently bonded to one hydrogen atom is a ______________.

True or False? Carbon atoms typically love to give away their electrons.

Various combinations of carbon and hydrogen atoms which form compounds that are nonpolar and hydrophobic are typically known as __________.

These two amino acids show "handiness". Since they are "mirror images" of each other they are isomers specifically known as ___________.

This is ______________.

These two identical molecules are great examples of __________.

This type of carbon-ring molecule is known as a ____________.

Carbon has an electronegativity of 2.5 on the periodic table. What does this mean?

When applied to carbon, what do the terms "Tetrahedral" and "Tetravalent" mean?