The study of the composition of substances and the changes they undergo.
OrganicPhysicalAnalytic
BiochemistryInorganic
Organic Chemistry
The study of living system molecules:
• carbohydrates• lipids• nucleic acids• proteins
BiochemistryBiochemistry•Where Where
chemistry chemistry meets biologymeets biology
•The chemistry The chemistry of living of living systemssystems
Inorganic Chemistry
• Study of elements and compounds
• States of matter• Reactions• This IS high school
chemistry!
Pure versus Applied Science• Pure science is neither
“good” nor “bad”, knowledge for fun of it
• Applied science = technology and engineering
Weight is a measure of gravity!
Mass: measure of amount of matter, does not change with location
0
20
40
60
80
100
120
140
Moon Earth
Weight (lbs) Mass (kg)
States of matter-Liquids
• Fixed volume• Pours or flows• Takes shape of
container• In Swedish:
Kvicksilver
Periodic Table
• The elements can exist alone or bonded.• Elements can be an atom or molecule.• Compounds are molecules that are bonded elements.
Atom or Molecule?
• H2
• Mg• F2
• S8
• Cu
• Molecule: two or more atoms chemically bonded
• Atom: smallest package of matter, single symbol
Element or Compound?
• O2
• NaCl• CO2
• Pt• H2O• He
• Elements are the purest form of matter, only one type of atom.
• Compounds are two or more types of atoms chemically bonded to form a pure substance.
Which of the above are atoms? Molecules?
Metric System
• SI = uniform system based on units of 10
• Base units = defined unit on an object or event in physical world
• Quantity vs. Number
• 10,000
Base unit Quantity
Kilogram Mass
Liter Volume
Meter Distance
Metric Equivalents
• mm • daL• kg• dm• cc
• L
• Millimeter• Decaliter• Kilogram• decimeter• cubic centimeter cm3= mL• liter = dm3
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