A change that produces one or more new substances with new chemical properties
A change in which the physical properties of a substance change but the chemical properties stay the same.
One of the spaces around the nucleus of an atom in which an electron moves.
An atom that has either a postive or a negative charge.
The attractive force that holds atoms together.
Tells the kinds of atoms and how many of each kind are in a compound.
A number in a formula that tells the number of atoms of an element in a compound.
A group of two or more atoms that acts like one atom.
A compound that contains two elements
A compound that reacts with metals to produce hydrogen
A compound that contains hydroxl (OH) radical
A substance that changes color when in an acid or a base
A number that tells whether a substance is an acid or a base