So far, you have focused on acids that donate a single hydrogen ion in an acid-base reaction. Now turn to polyprotic acids - those that donate more than one proton per molecule. Investigate the complex ionization processes that ensue, and see how they play a role in regulating blood pH.

Chemistry is the study of all matter, but matter at a very particular scale - that of atoms and molecules. Professor Davis begins by outlining his approach to this enormous topic and then introduces the periodic table of elements, one of the most powerful conceptual tools ever devised.

Continue exploring oxygen's role in organic chemistry. Here, Professor Davis introduces you to the properties and reactivity of two simple carbonyl compounds: aldehydes and ketones. What do we know about these oxygen-containing compounds and their chemistry? And what's their curious connection with how you feel after a night of heavy drinking?

Hydrocarbons contain only hydrogen and carbon atoms. See how some of the hydrogen atoms can be replaced with new elements and groups of elements to create compounds with new properties. These heteroatoms and functional groups form virtually unlimited combinations of organic molecules.

Visit the radio portion of the electromagnetic spectrum for insights into how tiny, atom-sized magnets in organic molecules interact with radio waves (and each other) to produce a complex set of magnetic resonances - which are one of the gold-standard identification tools used in modern organic chemistry. Topics include Zeeman splitting, magnetic spin-spin coupling, and multiplets.

Investigate some of the key methods scientists employ to communicate the right structural information about molecular compounds, including their identity, the ratio of elements that comprise them, and their connectivity. Explore Fischer projections, Newman projections, and stereoimages - all of which help us overcome the challenges of conveying the three-dimensional positions of atoms.

Now turn to liquids, which have a more complicated behavior than gases. The same intermolecular forces apply to both, but at much closer range for liquids. Explore the resulting properties, including viscosity, volatility, incompressibility, and miscibility. Also consider applications of these qualities.

Discover how solubility makes for an extremely effective tool for isolating non-volatile organic compounds through liquid-liquid and solid-liquid extractions (part of a larger phenomenon known as partitioning). As you delve into these processes, you'll learn one way to better understand extractions: making a perfect cup of tea.

Encounter reduction-oxidation (redox) reactions, which involve the exchange of electrons between substances. Discover that this process explains geological events on the early Earth, including why iron in its metallic state is so rare in nature. Then explore associated phenomena, including the activity series of metals.

Survey the types of chemicals that can harm human health. First, analyze the differences between a poison, a toxin, and a venom. Then, study examples of each, learning how arsenic disrupts ATP production, what makes nicotine deadlier than most people realize, and why venoms are typically complex proteins.