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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 |