a element is a pure substance
any pure element (there are slightly more than 100 of these that are known)any pure compound (there is an unlimited number of these)
To check if your gold is pure, you need to compare its weight to the weight of a known sample of pure gold. If the two weights are equal, then you can be confident that your gold is pure.
known as Amitabha
in pure metals, there is molecular bonding. These bondings are known as metallic bonds.
Dextrose is a pure substance. It is a simple sugar, also known as glucose, composed of a single type of molecule.
Grain alcohol is a compound known as ethanol and so is a pure substance, but it is almost never found in pure form.
Mercury exist in pure state in the nature and is known from thousands of years.
Practically (exceptions exist) all known substances can be obtained in a pure fom.
A pure element is an also known as a chemical element. Pure elements consist of only one type of atom. Aluminum is the only pure element in the group.
hybird
Being pure evil, mostly.