| A | B |
|---|
| matter | anything that has mass and takes up space |
| mass | the amount of matter in something,measured in grams |
| grams | units of mass |
| volume | the amount of space something takes up, measured in liters or cubic centimeters |
| liters | unit of volume. one liter equals 1,000 cubic centimieters |
| cubic | having 3 equal dimensions.If something is one cubic centimeters,its length,height,and width are each one centimeter. |
| centimeters | units of length |
| atoms | the smallest parts of something that can be identified |
| particles | very small pieces of something |
| protons | the particles in the nucleus of an atom that has a positive charge |
| neutrons | the particles in the nucleus of an atom that have no charge |
| electrons | particles that move around the nucleus of an atom and have a negative charge |
| nucleus | the center of an atom(plural,nuclei) nuclei |
| neutral | having an equal number of positive and negative charges |
| radiation | the energy made by particles shooting out of the nuclei of atoms |
| substance | a particular kind of matter.Water,air,and wood are all substances |
| elements | a substance that cannot be split into simpler substance.Each element is made of just one kind of atom |
| properties | characteristics of something that make it what it is |
| molecule | any substance made of two or more atoms |
| compounds | matter made by two or more elements that cannot be separated physically |
| chemical reaction | a process in which atoms gain,lose,or share eletrons |
| filter | a tool to strain and separate susbstances from a liquid or a gas |
| mixture | a combination of two or more substances that can be separated physically |
| physically | using the body or tools |
| balance | a measuring device in which a beam is brought to equilibrium when the masses on each end are the same |
