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Why study Chemistry in Why study Chemistry in Anatomy?Anatomy?
““Chemical Chemical reactions underlie reactions underlie all physiological all physiological
processes.”processes.”
Introduction to Chemistry• https://www.youtube.com/watch?v=izeuGr0lbN0&list=PLI
SBHwlJXpn2w2zdnkNav8M9i95oL2QL8&index=1
Basic Basic Chemistry Chemistry
ReviewReviewFor Anatomy StudentsFor Anatomy Students
ElementsElements are substances made of only 1 kind of atom.
ex: carbon, oxygen
• The six most common elements found in living things are C, H, C, H, O, N, P, and SO, N, P, and S..
Atomic StructureAtomic Structure
• atom - building blocks of matter
• subatomic particles within the nucleusprotons + chargeneutrons no charge
• around nucleus - cloud of – charged electrons
Atomic StructureAtomic Structure
• in most atoms, + and - are equal # of protons = # of electrons
• if an atom gains or loses an electron an ionion is formed
loses electron → pos. iongains electron → neg. ion
Atomic Atomic SymbolSymbol
Atomic Atomic MassMassAtomic Atomic
NumberNumberNumbeNumbe
r of r of protonsprotons
sum of sum of protons protons
and and neutroneutro
nsns
Number of Number of electrons electrons is equal to is equal to the the number of number of protonsprotons
Chemical BondsChemical Bonds• In an attempt to fill their levels to
become stable, atoms will interact with each other:
covalent bondscovalent bonds share electrons
ionic bondsionic bonds transfer
electrons
IsotopesIsotopes• variant of an element with same atomic
number but different atomic mass• ex: radioisotopradioisotopee - heavier isotopes of many
elements which are unstable and decompose • decay is radioactive
Uses Uses for for
IsotopeIsotopess
Molecular formulasMolecular formulas show the specific ratios of atoms in a compound.
ex: H2O - made up of 2 hydrogen atoms and 1 oxygen atom
Water Water HH22OO
Carbon dioxideCarbon dioxide COCO22
OxygenOxygen OO22
GlucoseGlucose CC66HH1212OO66
Introduction to Biochemistry HD• https://www.youtube.com/watch?v=tpBAmzQ_pUE
Organic CompoundsOrganic Compounds• contain carbon• covalently bonded• large - macromoleculesmacromolecules• made by living things