The noble gases have filled valence electron shells.
Chemistry
Xenon is the element with atomic number 54 and symbol Xe.
Xenon Facts and Uses – Atomic Number 54 Element Symbol ... Recently updated !
It's easy to melt aluminum cans and foil at home.
How to Melt Aluminum Cans and Foil at Home Recently updated !
Separate a mixture a salt and sugar by using differences between the two compounds, like boiling solubility and boiling point.
How to Separate Salt and Sugar Recently updated !
Some chemical compounds contain both ionic and covalent bonds. These are ionic compounds that contain polyatomic ions. Often, a compound with both types of bonds contains a metal bonded to an anion of covalently bonded nonmetals. Less often, the cation is polyatomic. The cation isn’t always a metal. Sometimes nonmetals […]
Compounds With Both Ionic and Covalent Bonds
Like many household chemicals, hydrogen peroxide (H2O2) has a shelf life. Over time, peroxide breaks down into water and oxygen. The shelf life of a bottle of unopened household peroxide is about 3 years, while it’s only good for 1 to 6 months after the seal is broken. Household peroxide […]