Data

Copy and paste the text below. It is read-only. Select All

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