Atoms form ions by gaining or losing valence electrons to reach a more stable electron configuration with a full valence shell. The electron configuration of the ion is similar to the nearest noble gas to the atom. Identify the charge when aluminum becomes an ion.

Which of the following is a testable hypothesis? a. if i brush my teeth, i will get fewer cavities than if i don't brush my teeth. b. green toothpaste tastes better than blue toothpaste or red toothpaste. c. smart, careful, healthy people always brush their teeth. d. it's wrong to not brush your teeth before you have an important conversation with someone.

Chemical energy is a form of a. kinetic energy only. b. both potential and kinetic energy. c. neither potential nor kinetic energy. d. potential energy only. reset

In what environment would mineral formation caused by high pressures and high temperatures most likely occur?