jueves, 14 de julio de 2016

True or false

  1. Chemistry is the science that deals with materials in laboratories. _T_
  2. There is only one type of chemistry. _F_
  3. Organic chemistry looks at which chemicals are in things. _T_
  4. Organic chemistry looks at things that have carbon in them._T_
  5. Polymer chemistry is a small area of chemistry._T_
  • the elements dont have oxidation number
  • All substances are gaseous
  • water is a simple substance 
  • sodium bicarbonate is an acidic substance 

2 comentarios:

  1. Ex 1
    1-Incorrect.
    2-Ok.
    3-Ok.
    4-Ok.
    5-Ok.
    Ex 2
    1-The elements have oxidation number (dont se escribe de ésta manera Don't) .
    2-Also exist substances liquids and solids.
    3-Water is composed by substance.
    4-Sodium bicarbonate is a basic substance.

    ResponderEliminar
  2. Ex 1
    1-Incorrect.
    2-Ok.
    3-Ok.
    4-Ok.
    5-Ok.
    Ex 2
    1-The elements have oxidation number (dont se escribe de ésta manera Don't) .
    2-Also exist substances liquids and solids.
    3-Water is composed by substance.
    4-Sodium bicarbonate is a basic substance.

    ResponderEliminar