science for 10-14 test

what is an electron dot diagram

a chemical symbol for the element surrounded by as many dots as there are electrons in its outer energy level.

Ionic bond

an ionic bond is formed when positive and negative ions attract each other ( metal and nonmetal)

covalent bond

bond between nonmetal atoms.

polar covalent bonds

occurs when electrons are unequally shared

nonpolar covalent bonds

occurs when electrons are equally shared

what are energy levels

they are the specific amounts of energy that electrons can have inside an atom

atoms structure

protons, electrons, neutrons, nucleus, and electron cloud

Formula to find maximum number of electrons in an energy level

2n²

whats an ion

an atom that is no longer neutral because it has gain or lose an electron

compound

a pure substance that contains 2 or more elements

chemical bond

force that holds 2 atoms together

metallic bond

forms when metal atoms share their pooled electrons

ocetet rule

atom is considered stable if it has 8 electrons in its outer energy level

chemical formula

a combination of element symbols and numbers that show which elements are present in a compound