| A | B |
|---|
| The basic unit of matter | atom |
| A substance made of one type of atom | element |
| A substance made of atoms of different elements bonded together | chemical compound |
| The type of bond formed when electrons are traded | ionic bond |
| The type of bond formed when electrons are shared | covalent bond |
| A negatively charged subatomic particle found outside the nucleus | electrons |
| A compound held together by covalent bonds | molecule |
| A bond between two polar molecules | hydrogen bonds |
| The attraction among molecules of the same substance | cohesion |
| The attraction among molecules of different substances | Adhesion |
| A mixture of substances that is evenly distributed throughout | solution |
| The substance that dissolves another substance | solvent |
| The substance that is dissolved | solute |
| The subatomic particle found on the inside of an atom that is positively charged | proton |
| The number of protons in the nucleus of an atom | atomic number |
| The weight of an atom, determined by adding the protons and neutrons | atomic mass |
| an interaction between two atoms | chemical bond |
| When a molecule has one end that has a slightly positive charge and another end that is slightly negative | polarity |
| The ability of a substance to absorb and retain heat | heat capacity |
| A way to measure acidity | pH scale |
| Substances that are sour and corrosive | acids |
| Substances that are bitter and slippery | bases |
| The subatomic particle found in the nucleus of the atom and has no charge. | neutron |
| Different versions of the same atom, each differing in the number of neutrons and the atomic mass, but not differing in name (C12 & C14 for example) | isotope |
