It is a non-metal and has 16 protons and electrons It can be found as a pure element as sulfate minerals It can be found in 2 amino acids which are needed to live. Plants absorb sulfur from their roots. At room temperature Sulfur is very soft It is a yellow lemon crystal in its natural state. When sulfur burns, it smells like a rotten egg. Sulfur was first discovered over in China in the 6th century BC. Sulfur has 18 isotopes and 4 of them are stable. Sulfur is mainly found near hot places like volcanoes and hot springs. Sulfur can bond with many elements, like hydrogen. Sulfuric acid is the product of acid rain which damages the environment. It can be used as a fossil fuel. It can also be found as a powder and lighting fixtures. The symbol for sulfur is S Some of the things that contain sulfur are gunpowder and matches. It is mainly used as a fertilizer. Antoine Lavoisier in 1777 discovered that instead of it being a compound, it is an element. The compound that sulfur and calcium when they mix is called gypsum. Sulfur is in many meteorites