What are some different types of salts and their formulas that can easily be found or made?

Question

I am doing a chemistry project in which I am testing the rate of oxidation of iron by submerging iron nails into a salt and water solution. I want to test different types of salts but I'm not sure what to use besides table salt.

Answer 1

Color
Salts can appear to be clear and transparent (sodium chloride), opaque (titanium dioxide), and even metallic and lustrous (iron disulfide). In many cases the apparent opacity or transparency are only related to the difference in size of the individual monocrystals. Since light reflects from the phase boundaries, larger crystals tend to be transparent, while poly-crystalline aggregates look like white powders. Of course, some salts are inherently opaque.

Salts exist in all different colors, e.g. yellow (sodium chromate), orange (potassium dichromate), red (mercury sulfide), mauve (cobalt chloride hexahydrate), blue (copper sulfate pentahydrate, ferric hexacyanoferrate), green (nickel oxide), colorless (magnesium sulfate), white (titanium dioxide), and black (manganese dioxide). Most minerals and inorganic pigments as well as many synthetic organic dyes are salts.


Taste
Different salts can elicit all five basic tastes, e.g. salty (sodium chloride), sweet (lead diacetate Warning: Extremely toxic!), sour (potassium bitartrate), bitter (magnesium sulfate), and umami or savory (monosodium glutamate).

Answer 2

Rock salt,,kosher salt, bath salt,water softner salt, sidewalk salt