| A | B |
|---|
| milliliter | A metric unit of capacity equivalent to 0.001 L. |
| liter | A metric unit of capacity equivalent to 1,000 mL. |
| element | A substance that cannot be broken down into other substances by heat, light or electricity. |
| periodic table | A chart that classifies elements by their properties. |
| atom | The smallest particle of an element that has the properties of the element. |
| nucleus | The center of an atom where protons and neutrons are located. |
| proton | Partle in an atom that has a positive electrical charge. |
| neutron | Particle in an atom that has no charge. |
| electron | Particle in an atom that has a negative electrical charge. |
| molecule | Two or more atoms joined together. The smallest unit of many substance. |
| compound | A substance made up of atoms or more than one element joined together in a molecule. |
| mixture | Two or more substances that are mixed together but can be separated out because of their atoms are not combined. |
| solution | A mixture in which substance break up into their most basic particles which are too small to be seen and spread evenly through another substance. |
| physical property | A way of describing an object using traits that can be observed or measured without changing the substance into something else. |
| physical change | A change in one or more physical properties. |
| chemical property | Describes the way a substance reacts with other substances. |
| chemical change | A change that produces new substances with new properties. |
| chemical reaction | A process that produces one or more substances that are different from the original substances. |
| electron cloud | The area that surrounds the nucleus where the electrons travel. |
