Quiz 1

Cards (24)

  • Properties that can be studied by your senses are physical properties
  • Physical properties include colour, odour, melting point, boiling point, density
  • properties That you need to know what chemicals are in them are called chemical properties.
  • Intensive properties are independent of the amount of matter
  • Extensive properties are dependent on the amount of matter
  • Physical changes are irreversible/reversible but do not change the chemical composition of the substance
  • Chemical changes are irreversible/reversible and the molecular composition of matter changes
  • kg
    Kilogram
  • Km
    kilometer
  • G
    Gram
  • Mm
    Millimeter
  • dL
    Deciliter
  • Dg
    Dekagram
  • cg
    Centigram
  • Hg
    hectogram
  • How many sig figs? 56783.08
    7
    1. Perform the following addition and report the result with the correct number of significant figures: 0.002345+0.0009876+0.001230.
    0.004563
  • D = ?/?
    D = m/v
  • For addition and subtraction, the final answer's period will be in the same place as the number with the least # of sig figs.
  • For multiplication and division, the final answer will have the same # of sig figs as the # with the least sig figs.
  • F= 1.8x °c +32
  • K= °c + 273.15
  • Accuracy is the closeness of a measured value to the true value
  • Precision is a measure of the reproducibility or repeating nature of a set of measurements