Chemistry 100 - Review Sheet for Exam #1

Chapter 1: Measurements
  • Units of measurement
  • SI (Internations system of units)
  • Metric system
  • Metric units of measurement:
    • Length - meter (m)
    • Volume - Liter (L)
    • Mass - gram (g)
    • Temperature
      • Celsius (oC)
      • Kelvin (K)
    • Time - seconds (s)
  • Scientific notation
  • Measured number
  • Exact number
  • Signifcant Figures
  • Rounding numbers
  • SI and metric prefixes
    • Giga (G) — 109
    • Mega (M) — 106
    • kilo (k) —103
    • centi (c) — 10-2
    • milli (m) — 10-3
    • micro (m) — 10-6
    • nano (n) — 10-9
  • Measurements
  • Precision
  • Accuracy
  • Conversion factors
    • 2.54 cm/in
    • 5280 ft/mile
    • 12 in/ft
    • 3 ft/yd
    • 454 g/lb
    • 1 cm3 = 1 mL
  • Percent as conversion factors
  • Density (D = mass/vol)
  • Specific gravity

 

Chapter 2: Atoms & Elements
  • Elements
  • Chemical symbols
  • Periodic table
  • Groups (vertical columns)
    • Alkali metals (Group I)
    • Alkaline earth metals (Group II)
    • Halogens (Group VII)
    • Noble Gases (Group VIII)
  • Periods (horizontal rows)
  • Metals
  • Non-metals (where are these?)
  • Daltons atomic theory
    • Atom
    • Electron (negative)
    • Proton (positive)
    • Neutron (neutral)
  • Atomic mass (amu)
  • Isotopes (atoms with different numbers of neutrons)
    • Atomic number (Z)
    • Mass number (protons + neutrons)
  • Average atomic mass
  • Electron arrangement
  • Electron configurations (e.g., Na 1s2 2s2 2p6 3s1)
  • Periodic law (why groups have similar properties)
  • Energy levels (n=1, 2, 3, etc.)