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Science Vocab #3

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
Created by: mercerchiefs98