Glossary terms chapter 4

  1. Matter
    • Anything that has a mass and takes up space
    • eg. water, wood, air, etc.
  2. Pure Substance
    • Contains only 1 kind of particle
    • can not be broken down further by physical methods.
    • 1. Elements
    • 2. Compounds
    • ex. gold, oxygen, water, nitrogen
  3. Mixture
    • Contains more than one kind of particle
    • can be separated by physical methods
    • 1. solutions
    • 2. mechanical mixtures
    • ex steel, pop, bronze, brass etc.
  4. Element
    • A pure substance that cannot be broken down into simpler parts
    • eg. periodic table; sodium, helium, lithium, etc.
  5. Compound
    • A pure substance that is made of 2 or more different elements that are chemically combined.
    • ex. water, carbon dioxide, glucose
  6. Physical property
    • A characteristic of a substance that can be observed and measured without changing the identity of a substance
    • They can be either qualitative, or quantitative
  7. Viscosity
    The measure of a substances resistance to flow
  8. Melting point
    • The melting point is the temperature of melting of a substance.
    • ex. the melting point of iron is 1538° C
  9. Boiling point
    • The boiling point is the temperature at which a substance boils
    • ex. water = approx. 100o C
  10. Solubility
    Solubility is the ability of a substance to dissolve into another substance.
  11. Density
    • Density is the ratio of mass to volume
    •  Equation:
    • Density = mass / volume
    • D = m / v
  12. Chemical property
    Chemical property describes the behaviour of a substance as it reacts with another substance to form one or more new substances.
  13. Combustibility
    • Cumbustibility is the ability of a substance to react rapidly with oxygen to produce carbon dioxide.
    • Ex. propane is used as a fuel for heating air in hot air balloons.
  14. Stability
    stability is the ability of a substance to remain unchanged
  15. Toxicity
    • Toxicity is the ability of a substance to cause harmful effects in plants and animals
    • WHMIS symbol
Card Set
Glossary terms chapter 4
glossary terms grade 9