Unit II Vocabulary | Vocab Set #1 | Vocab Set #2 | Vocab Set #3 | Vocab Set #4

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Chemical Bond: the force that holds two or more atoms together.

Chemical Formula: a combination of chemical symbols and numbers that indicates which elements and how many atoms of each element are present in a molecule.

Compound: a pure substance that contains two or more elements.

Covalent Bond: a chemical bond formed when two or more nonmetals share electrons.

Electron Cloud: the area where negatively charged electrons, arranged in energy levels, travel around an atom's nucleus.

Electron Dot Diagram: chemcial symbol for an element, surrounded by the number of valence electrons.

Energy Level: the different positions for an electron in an atom.

Ion: an atom that is no longer neutral because its has gained or lost an electron.

Ionic Bond: a bond that occurs when a metal gives it's valence electrons to a nonmetal.

Metallic Bond: occurs when metals share their pooled electrons.

Molecule: a neutral particle formed when atoms share electrons.

Polar Bond: a bond resulting from the unequal sharing of electrons.