Chapter 20: Chemical Bonds

Molecule

________: A neutral particle that forms as a result of electron sharing.

Chemical Formula

________: tells what elements a compound contains and the exact number of the atoms of each element in a unit of that compound.

Ion

________: a charged particle because it now has either more or fewer electrons than protons.

Chlorine

________ is a poisonous greenish- yellow gas.

Covalent Bond

________: The attraction that forms between atoms when they share electrons.

Chemical Bond

________: the force that holds atoms together in a compound.

noble gases

The ________ are stable because they each have a complete outer energy level.

Polyatomic Ion

________: a positively or negatively charged, covalently bonded group of atoms.

subscript

A(n) ________ written after a symbol tells how many atoms of that element are in a unit of the compound.

Hydrate

________: a compound that has water chemically attached to its ions and written into its chemical formula.

single covalent bond

A(n) ________ is made up of two shared electrons.

Ionic compounds

________ are often crystalline solids with high melting points.

larger nucleus

The electrons being shared in a molecule are held more closely to the atoms with the stronger pull or ________.

lack of iodine

A(n) ________ causes a wide range of problems in the human body.

Electrons

________ are not always shared equally between atoms in a covalent bond.

Covalent compounds

________ are those formed between elements that are nonmetals.

Polar Molecule

________: one that has a slightly positive end and a slightly negative end although the overall molecule is neutral.

Non polar Molecule

________: one in which electrons are shared equally in bonds.

Binary Compound

________: One that is composed of two elements.

Oxidation Number

________: tells you how many electrons an atom has gained, lost, or shared to become stable.

Chemical Formula

tells what elements a compound contains and the exact number of the atoms of each element in a unit of that compound

Chemical Bond

the force that holds atoms together in a compound

Ion

a charged particle because it now has either more or fewer electrons than protons

Covalent Bond

The attraction that forms between atoms when they share electrons

Molecule

A neutral particle that forms as a result of electron sharing

Binary Compound

One that is composed of two elements

Polyatomic Ion

a positively or negatively charged, covalently bonded group of atoms

Hydrate

a compound that has water chemically attached to its ions and written into its chemical formula