| A | B |
|---|
| Atom | Smallest part of an element; made up of protons |
| Atomic Mass | Total number of protons and neutrons in an atom |
| Atomic Number | Number of protons or electrons in an atom |
| Bohr Diagram | Shows the local of ALL the electrons in an atom |
| Chemical Change | Occurs when 2 ore more substances chemically combine to create a new substance |
| Chemical Equation | Represents a chemical reaction using chemical formulas and coefficients |
| Chemical Formula | Represents a chemical compound (with symbols and subscripts) |
| Chemical Symbols | Letter or letters that are used to represent the elements |
| Compound | Pure substance made of two or more elements that are chemical combined |
| Conservation of Mass | Law that states the total mass of the reactants must equal the total mass of the products |
| Covalent Bond | Bond between two elements that share electrons |
| Electron | Subatomic particle with a negative charge; found in energy levels around the nucleus |
| Energy Level | Areas around the nucleus that contains electrons; first can hold 2 |
| Family | Groups or columns of elements in the periodic table with similar properties |
| Ion | An atom that has lost or gained an electron |
| Ionic Bond | Bond between two ions that results from a transfer of electrons |
| Isotope | Atoms of the same element with different numbers of neutrons |
| Lewis Structure | Diagram that show the number of VALENCE electrons in an atom |
| Matter | Anything that has mass and volume |
| Metal | Elements found on the left-hand side of the periodic table |
| Metalloids | Elements located along the zig-zag that have properties of metals and nonmetals |
| Mixture | Two or more substances mixed together |
| Monomers | Molecules that are linked together to make polymers |
| Neutron | Subatomic particle with no charge; found in the nucleus |
| Nonmetals | Elements found on the right-hand side of the periodic table |
| Nucleus | Center of the atom |
| Periodic Table | Chart that shows the elements arranged in families and periods based on their properties and atomic structure |
| Petrochemicals | Chemicals that are made from petroleum; used to make slime and plastics |
| Physical Change | Change in size |
| Polymers | Created by linking monomers together to make a chain; proteins |
| Products | Substances that are produced by a chemical reaction |
| Proton | Subatomic particle with a positive charge; found in the nucleus |
| Reactants | Substances that enter into a chemical reactions |
| Reaction Rate | The speed at which a chemical reaction takes place |
| Valence | Electrons in the outermost energy level |
| Quark | Particles that make up protons and neutrons |
