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17 terms

Atoms and bonding

Ionic Bonding Covalent Bonding
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Ion
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.
Subscript
Tells you the ratio of elements in the compound
Crystal
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.
Molecule
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.
isotope
is an atom with more or less neutrons than protons.
an isotope can be neutral if the electrons and protons are equal (Neutral Isotope)