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6 Matter Vocabulary
| Term | Definition |
|---|---|
| Element | A pure substance that cannot be broken down into chemical or physical means |
| Atom | The basic particle from which all elements are made; the smallest particle of an element that has the properties of that element |
| Proton | Small, positively charged particles that are found in the nucleus of an atom |
| Neutron | A small particle in the nucleus of the atom, with no electrical charge |
| Electron | A tiny, negatively charged particle that moves around the outside of the nucleus of an atom |
| Chemical Bond | The force of attraction that holds two atoms together |
| Molecule | A neutral group of two or more atoms held together by covalent bonds |
| Compound | A substance formed as a result of a chemical reaction |
| Product | A substance formed as a result of a chemical reaction |
| Reactant | A substance that enters into a chemical reaction |
| Coefficient | A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in the reaction |
| Chemical Equation | A short easy way to show a chemical reaction, using symbols |
| Subscript | A small number to the bottom right of an element telling how many of that element there is |
| Nucleus | The central core of an element that contains the protons and neutrons |
| Periodic Table | A chart that organizes all known elements in the world |
| Valence Electrons | The electrons located on the outer-most shell of an atom |
| Chemical Change | A change i which one or more substances combine or break apart to form a new substance |
| Physical Change | A change that alters the form/appearance of a material but doesn't make it into another substance |