Why study Chemistry in Anatomy? “Chemical reactions underlie all physiological processes.”

Introduction to Chemistry https://www.youtube.com/watch?v=izeuGr0lbN0&list=PLISBHwlJXpn2w2zdnkNav8M9i95oL2QL8&index=1

Basic Chemistry Review For Anatomy Students

Elements are substances made of only 1 kind of atom. ex: carbon, oxygen The six most common elements found in living things are C, H, O, N, P, and S.

Atomic Structure

Atomic Structure atom - building blocks of matter subatomic particles within the nucleus protons + charge neutrons no charge around nucleus - cloud of – charged electrons

in most atoms, + and - are equal # of protons = # of electrons

if an atom gains or loses an electron an ion is formed loses electron → pos. ion gains electron → neg. ion

sum of protons and neutrons Atomic Mass Atomic Number sum of protons and neutrons Number of protons Number of electrons is equal to the number of protons Atomic Symbol

Chemical Bonds In an attempt to fill their levels to become stable, atoms will interact with each other: covalent bonds share electrons

ionic bonds transfer electrons

Isotopes variant of an element with same atomic number but different atomic mass ex: radioisotope - heavier isotopes of many elements which are unstable and decompose decay is radioactive

Uses for Isotopes

Molecular formulas show the specific ratios of atoms in a compound Molecular formulas show the specific ratios of atoms in a compound. ex: H2O - made up of 2 hydrogen atoms and 1 oxygen atom Water H2O Carbon dioxide CO2 Oxygen O2 Glucose C6H12O6

Introduction to Biochemistry HD https://www.youtube.com/watch?v=tpBAmzQ_pUE

Organic Compounds contain carbon covalently bonded large - macromolecules made by living things