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unit 4 vocabulary

Atomic Mass Average mass of one atom of air element.
Periodic Table A chart where all elements are organized into periods and groups according to their properties.
Chemical Symbol One -or two-letter code that stands for an element.
Period Chemistry A row of elements in the periodic table table arranged by atomic number.
Group Column of elements in the periodic table, in which elements have certain properties in common.
Matter The material that all objects and substances are made of ; anything that has mass and takes up space.
Element Substances that are the building blocks of all matter ; An element is made up of one kind of atom.
Compound Matter made up of two or more elements.
Atom Smallest particle into which an element can be divided and still have the properties of that elements.
Electron Negatively charged particel found outside the nucleus an atom.
Nucleus-Biology Structure near the center of a cell that contains the cell's DNA.
Protons Positively charged particle located in the nucleus or an atom.
Neutrons In an atom, particle with a neutral charged: located in the nucleus.
Energy Level The amount of energy carried by an electron an atom.
Isotope Atoms of the same elements with different numbers of neutronsin the nucleus.
Mass Number The sum of protons and neutrons in nucleus of an atom.
Atomic Number The number of protons in the nucleus of an atom.
Metal Elements usually solid with a shiny surface.
Malleable A term used to describe material that can be pounded into shapes.
Ductile A term used to describe ameterial that can be pulled out into a long wire.
Conductivley The ability of an object to trans heat pr e;ectrocoty tp another object.
Reactivity The ease and speed with thich an element combines, or reacts, with other elements and compounds.
Corrision The gradual wearing away of a metal element due to a chemical reaction.
Allcali Metal An element in group 1 of the periodic table.
Alkaline Earth Metal A element in group 2 of th periodic table.
Transition Metal One of the element in group 3 through 12 of the periodic table.
Alloy A mixture of two or more elements, one of which is a metal.
Nonmeatal An element that lacks most of the lproperties of a metal.
Diatomic Molecule A molecule consisting of two atoms.
Hialogen An element found in grouop 17 of the periodic.
Noble Gas An element in group 18 of the periodic table.
Created by: kylarnk