STP corresponds to a temperature of _______ oC.

The elements of family 1 are also named _______ .

Lithium fluoride is an example of an _______ compound.

Propane, C3H8, reacts with oxygen.  Write the balanced chemical equation.   (4 marks)

Solutions of barium hydroxide and calcium nitrate are mixed. What precipitate will form?

An element’s atomic number represents the element’s atomic mass.

The difference in electronegativity from calcium to iodine is 3.66  

  Which of the following is NOT a property of oxygen?

A gas is heated in a closed rigid container.  The molecules:

Rusting iron is an example of an _______ .