| A | B |
|---|
| Element | Matter made of all the same kind of atoms |
| Elements are classified on the periodic table..... | according to whether they are metals or non-metals |
| The only 2 liquid elements are: | Bromine and Mercury |
| The properties of metals | Mostly solids, flexible, strong, can be molded into shpaes, conduct electricity, and conduct heat |
| The properties of non-metals | Can be solids, liquids, or gases, brittle and canot be molded, do NOT conduct electricity, do NOT heat |
| Elements are found.... | everywhere!!! |
| Compounds | A new substance that is formed when atoms of 2 or more different elements join together. |
| Atoms | the building blocks of all matter |
| Atom | the smallest particle of an element that retains the properties of that element |
| Electron | Negatively charged subatomic particle |
| Proton | A positively charged subatomic particle found in the nucleus |
| Neutron | A subatomic particle with no charge |
| Nucleus | Composed of neutrons and protons |
| Mass number | The total number of protons and neutrons in the nucleus |
| Atomic Number | The number of protons in the nucleus of an atom |
| To find the number of neutrons... | subtract the atomic number from the rounded mass number (atomic weight) |
| H | Hydrogen |
| He | Helium |
| Li | Lithium |
| B | Boron |
| C | Carbon |
| N | Nitrogen |
| O | Oxygen |
| F | Fluorine |
| Ne | Neon |
| Na | Sodium |
| Mg | Magnesium |
| Al | Aluminum |
| Si | Silicon |
| Cl | Chlorine |
| K | Potassium |
| Ca | Calcium |
| Hg | Mercury |
| Au | Gold |
| Ag | Silver |
| Ni | Nickel |
| Cu | Copper |
| Fe | Iron |
| H2O | Water |
| CO2 | Carbon Dioxide |
| SiO2 | Silicon Dioxide (sand) |
| NaCl | Sodium Chloride (salt) |
| NH3 | Ammonia |
| H2SO4 | Sulfuric Acid |
| HCl | Hydrochloric Acid |
| C6H12O6 | Glucose |
| NaCl | Sodium chloride |
| Physical Change | A change in which a physical property of matter is altered, but the substance remains the same kind of matter. |
| Color, hardness, density, solubility | Physical properties |
| Flammability, Acidity, Corrosiveness, Toxicity | Chemical Properties |
| Chemical Change | A change matter undergoes when it IS turned into a new substance. |
| Burning is a ________ change. | chemcial |
| Rusting is a ________ change. | physical |
