| A | B |
|---|
| Matter | anything that has mass and takes up space |
| Element | the simplest pure substances (stuff), and they cannot be broken down into anything else |
| Compound | a pure substance (stuff) made of two or more elements that are chemically combined (they stick together) |
| Mixture | two or more substances (stuff) – elements, compounds or both, that are in the same place but are not chemically combined (they are not stuck together, you can take them apart easily) |
| Atom | the smallest particle (part) of an element |
| Model | physical (real), mental (in your mind), visual (picture) or other representation of an idea to help understand what we cannot see |
| Nucleus | center of an atom, protons and neutrons are located here |
| Electrons | negative (-) charge of an atom, outside the nucleus |
| Protons | positive (+) charge in an atom, located in the nucleus |
| Neutrons | no charge part of the atom, located in the nucleus |
| Mass | amount of matter (stuff) that make up an object |
