Study Curve

Native Elements: these are elements that occur in nature that are uncombined with other elements and are usually classified in 3 groups; metals, semimetals, nonmetals.

Carbonate: In it's most basic sense is an anion (negative charge) which consists of one carbon surrounded by 3 oxygens or CO3. You can test for carbonate by introducing a weak acid and detecting an off gas. However carbonates are often referred to as salts such as calcium carbonate.

halides: are often salts such as NaCl (sodium chloride), or binary compounds that have a halogen atom combined with an element which has less power to attract electrons to it or is less electronegative than the halogen atom.

oxides: is any chemical compound containing an oxygen atom. Oxides are extremely common for example carbon monoxide and aluminum oxide and are usually insoluble in water.

sulfates: is another anion (negative charge) that has one sulfur atom surrounded by 4 oxygen atoms. Again many sulfates can be found in salts for example magnesium sulfate. Most, but not all sulfate salts are soluble in water.

sulfides: a chemical compound containing sulfur and is a strong base or alkaline in nature. Again these are very commonly found in salts.