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100
the attractive force that holds atoms or ions together. 
What is a chemical bond?
100
a chemical compound whose simplest units are molecules.
what is a molecular compound?
100
Is compound of positive and negative ions that are combined so that the numbers of positive and negative charges are equal. 
what is an ionic compound?
200
A covalent bond in which a pair of electron shared by two is held more closely by one atom.
what is a polar covalent bond?
200
the energy required to break the bonds in 1 mol of a chemical compound. 
what is a bond energy?
200
is the simplest collection of atoms from which am ionic compounds formula can be established.
what is a formula unit?
300
Describes a molecule in which the positive and negative charges are separated.
what is polar?
300
a combination of chemical symbols and numbers ti represent a substance.
what is a chemical formula?
300
is the energy released when one mole of an ionic crystalline compound is formed from gaseous ions.
what is lattice
400
a bond formed when atoms share one or mare pairs of electron. 
what is a covalent bond?
400
double and triple bonds
what is a multiple bonds?
400
a charged group of covalenty bonded atoms.
what is polyatomic Ion?
500
a force that attracts electrons from one atom to another, which transforms neutral atom into an ion.
what is an ionic bonding?
500
is a covalent bond in which one pair of electrons is shared between two atoms.
what is a single bond?
500
the ability of a substance to be drawn, pulled, orextruded through a small opening to produce a wire. 
what is ductility?