Why study Chemistry in Anatomy? “Chemical reactions underlie all physiological processes.”
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Transcript of Why study Chemistry in Anatomy? “Chemical reactions underlie all physiological processes.”
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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.”
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Introduction to Chemistry• https://www.youtube.com/watch?v=izeuGr0lbN0&list=PLI
SBHwlJXpn2w2zdnkNav8M9i95oL2QL8&index=1
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Basic Basic Chemistry Chemistry
ReviewReviewFor Anatomy StudentsFor Anatomy Students
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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..
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Atomic StructureAtomic Structure
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• atom - building blocks of matter
• subatomic particles within the nucleusprotons + chargeneutrons no charge
• around nucleus - cloud of – charged electrons
Atomic StructureAtomic Structure
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• 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
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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
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Chemical BondsChemical Bonds• In an attempt to fill their levels to
become stable, atoms will interact with each other:
covalent bondscovalent bonds share electrons
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ionic bondsionic bonds transfer
electrons
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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
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Uses Uses for for
IsotopeIsotopess
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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
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Introduction to Biochemistry HD• https://www.youtube.com/watch?v=tpBAmzQ_pUE
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Organic CompoundsOrganic Compounds• contain carbon• covalently bonded• large - macromoleculesmacromolecules• made by living things