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

Introduction to Chemistry SBHwlJXpn2w2zdnkNav8M9i95oL2QL8&index=1https:// SBHwlJXpn2w2zdnkNav8M9i95oL2QL8&index=1

Basic Chemistry Review For Anatomy Students

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

Atomic Structure

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

in most atoms, + and - are equal # of protons = # of electrons if an atom gains or loses an electron an i ii ion is formed loses electron → pos. ion gains electron → neg. ion

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

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

ionic bonds ionic bonds transfer electrons

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

Uses for Isotopes

Molecular formulas Molecular formulas show the specific ratios of atoms in a compound. ex: H 2 O - made up of 2 hydrogen atoms and 1 oxygen atom Water H 2 O Carbon dioxideCO 2 OxygenO 2 GlucoseC 6 H 12 O 6

Introduction to Biochemistry HD

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