1 chemistry of life chemistry: study of matter biochemistry: study of living matter
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Chemistry of Life
Chemistry: study of matterBiochemistry: study of living matter
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Matter Anything with mass that occupies
space
Solid, liquid, gas (depending upon density)
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Properties of matter Chemical: characteristics of matter
as it undergoes change in composition
Physical: characteristics of matter such as color, density, hardness, melting point, boiling point, electrical and thermal conductivities
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Types of matterMATTER
MIXTURES PURE SUBSTANCES
Homogenous
Heterogeneous
COMPOUNDS
ELEMENTS
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Terminology Atom: smallest particle of an
element
Molecule: smallest particle of an element or compound that can have a stable independent existence
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Atom of an element Nucleus Neutron Proton Electron
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Periodic table of elements Atomic number Atomic mass Electronegativity Ionization number Valence number
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Chemical formulas Show the chemical composition of
a substance
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Electron shells
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Bonds Ionic Covalent Hydrogen
Chemical reactions represent forming or breaking of bonds.
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Ions and Ionic compounds Gaining or losing electrons in the
outer shell cations or anions
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Hydrogen bonds Weak when few, strong when
many
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Covalent bonds Sharing
electrons in the outer shell
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Polar covalent bonds contribute to water properties (cohesion & adhesion)
Water chemistry
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Water dissociation weak acids and bases
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Water vs. Ice
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Solvent
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Proteins
Membrane & cellular proteins