1 Prior Knowledge

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Created by
Thorfinn

Cards (18)

  • Matter:
    Matter has MASS & occupies SPACE.
  • Matter:
    Three states of
    matter: solid, liquid, gas
  • Pure Substance:
    one in which all the particles that make up the
    substance are the same (resulting in common
    properties).
  • Element:
    a pure substance that cannot be broken
    down into simpler substances. They
    contain only one kind of atom.
  • Compound:
    a pure substance that contains two or
    more different elements in a fixed
    proportion. They can be identified with a
    chemical formula.
  • Molecule:
    a neutral particle that is made up of two or
    more atoms that are joined by covalent
    bonds.
  • Covalent Bond:
    the force of attraction between atoms that
    share one, two, or three pairs of electrons
  • Ionic Bond:
    formed between metals and non-metals,
    electrons are given up by the metals and
    received by the non-metals
  • Physical Property:
    a physical characteristic of the substance.
    Example: state of matter, hardness, melting
    point, odour, solubility, colour.
  • Quantitative Property:
    property that has a number associated with it.
  • Physical Change:
    a change which does not affect the
    chemical properties of a substance.
  • Chemical Property:
    a characteristic behaviour that occurs
    when a substance changes into a new
    substance.
  • Chemical Change:
    the change of one substance into another.
  • There are 5 signs that can be used as evidence
    of a chemical change:
    A permanent __UNEXPECTED___ change in colour.
    Formation of a _GAS_ or _ODOUR_.
    Formation of a __PRECIPITATE____. → When 2
    liquids combine to form a solid
    4. _ENERGY__ in the form of heat or light is either
    released or absorbed.
    5. _ELECTRICITY__ is produced.
  • Reactants:
    the starting materials in a chemical
    reaction.
  • Products:
    the new material(s) produced in a
    chemical reaction.
  • Isotopes:
    Atoms of the same element that have different numbers of
    neutrons
  • The Periodic Table:
    Elements react in order to become stable like the noble gases (have full
    outer shells) i.e. they want the same electron configuration as their closest
    noble gas neighbour. They do this by gaining or losing electrons.