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Science Vocab #3
| Question | Answer |
|---|---|
| Pressure | The force pushing on a surface divided by the area of that surface |
| Boyle's law | A principle that describes the relationship between the pressure and the volume of a gas at a constant temperature |
| Charles' Law | A principle that describes the relationship between the temperature and volume of a gas at a constant pressure |
| Nucleus | The central core of an atom containing protons and usually neutrons |
| Atom | The basic particle from which all elements are made |
| Electron | A tiny, negatively charged particle that moves around the nucleus of an atom |
| Mass Number | The sum of protons and neutrons in the nucleus of an atom |
| Proton | A small, positively charged particle in the nucleus of an atom |
| Atomic Number | The number of protons in the nucleus of an atom |
| Model | A diagram, a mental picture, a mathematical statement, or an object that helps explain ideas about the natural world |
| Neutron | A small particle in the nucleus of the atom, with no electrical charge |
| Isotope | An atom with the same number of protons and a different number of neutrons from other atoms of the same element |
| Atomic Mass | The average mass of all the isotopes of an element |
| Periodic Table | A chart of the element showing the repeating pattern of their propeties |
| Period | A horizontal row of elements in the periodic table |
| Group | Elements in the same vertical column of the periodic table; also called family |
| Chemical Symbol | A one or two letter representation of an element |
| Alkali Metal | An element in Group 1 of the periodic table |
| Alkaline Earth Metal | An element in Group 2 of the periodic table |
| Halogen | An element found in Group 17 of the periodic table |
| Noble Gas | An element in Group 18 of the periodic table |
| Metalloid | An element that ha some characteristics of both metals and nonmetals |
| Transition Metals | One of the elements in Group 3 through 12 of the periodic table |