Matter Vocabulary 3-Red Words

a representation of a chemical reaction using symbols to show the relationship between the reactants and the products

says that in chemical reactions, the total mass of the products must equal the total mass of the reactants.

the number of protons in an atom

attractive force that holds the atoms together

a substance that forms in a chemical reaction

the process by which one or more substances change to produce one or more different substances

Number of protons and neutrons. The bottom number of an element on the periodic table.

a substance or molecule that participates in a chemical reaction

a combination of chemical symbols and numbers to represent a substance

a region around the nucleus of an atom where electrons are likely to be found

model of an atom that shows electrons in circular orbits around the nucleus

the number of electrons in the outermost energy level