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Ionic Bonding Covalent Bonding


an atom or group of atoms that has an electrical charge.

Polyatomic ion

Ions that are made of more than one atom.

Ionic bond

Attraction of two oppositely charged particles.

Ionic compound

a compound that consists of positive and negative ions. Hard, brittle crystals that have High boiling+melting points. Conduct electricity when dissolved in water.

Chemical formula

Combination of symbols representing the ratio of two elements.


Tells you the ratio of elements in the compound


a three-dimensional arrangement formed by ions in am ionic bond.

A positive ion

When an atom loses an electron, it becomes_________.

A negative ion

When an atom gains an electron, it becomes_________.

Covalent bond

The attraction of each atom's nucleus for the shared pair of electrons.


a neutral group of atoms joined by covalent bonds

double bond

a covalent bond in which two pairs of electrons are shared between two atoms

triple bond

a covalent bond in which two atoms share three pairs of electrons

molecular compound

a compound that is composed of molecules; have low melting+boiling points. Do not conduct electricity when dissolved in water.

polar bond

A covalent bond in which electrons are shared unequally. Have slight electrical charges.

nonpolar bond

A covalent bond in which electrons are shared equally.


is an atom with more or less neutrons than protons.
an isotope can be neutral if the electrons and protons are equal (Neutral Isotope)

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