Please classify these as either elements, compounds, solutions, or heterogeneous mixtures, please specify it it's a colloid or a suspension.Copper,...

Classifications of the material listed in the question is
indicated below against each substance.

Copper:
Element

Copper chloride(CuCl2):
Compound

Chex mix: I am not cleat what substance
is this. However, the term mix indicates that it is some kind of
mixture

Fog: Suspension, which is a type of
mixture.

Water:
Compound

Copper chloride (CuCl, aq): Solution. The suffix
'aq' indicates that it is a solution in water.

Iron:
Element. However please note that the word iron is also used for loosely for some alloys
of iron. Such alloys form homogeneous mixtures.

Sodium
chloride: Compound

Sand: Heterogeneous
mixtures

Vinegar: Solution

NaHCO3(Sodium Bicarbonate): Compound,

Glue: Glues can be of
many different types. None of these are elements. All the glues used of sticking things
together that have some liquids that must evaporate for the things to remain stuck, are
mixtures.

Koolaid: This appears to be brand name of some
product. I  am not aware of this product.

Sulfur:
Element