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Stack #4613199

QuestionAnswer
atom The basic particle from which all elements are made; the smallest particle of an element that has the properties of that element.
electron A tiny, negativity charged particle that moves around the outside of the nucleolus of an atom.
nucleus The second part of an atom that contains portions and neutrons.
proton Small, positively charged particles that are found in the nucleus of an atom.
energy level A region of an atom in which electrons of the same energy are likely to be found.
neutron A small particle in the nucleus of the atom, with no electrical charge.
atomic number The number of protons in the nucleus of an atom.
isotpoe An atom with the same number of protons and a different number of neutrons from other atoms of the same element.
mass number The sum of protons and neutrons in the nucleus of an atom.
atomic mass The average mass of all the isotopes of an element.
Periodic table An arrangement of the elements showing the repeating pattern of their properties.
chemical symbol A one-or-two number representation of an element.
period A horizontal row of elements in the periodic table.
group Elements in the same vertical column of the periodic table; also called family.
metal A class of elements characterized by the physical properties that include shininess, malleability, ductility and conductivity.
luster The way a mineral reflects light from its surface.
malleable A term used to describe material that can be happened or rolled into flat sheets.
ductile A term used to describe a material that can be pulled out into a long wire.
thermal conductivity The ability of an object to transfer heat.
electrical conductivity The ability of an object to carry electric current.
reactivity The ease and speed with which and element combines, or reacts, with other elements and compounds.
corrosion The gradual wearing away of a metal element due to a chemical reaction.
alkali metal An element in the group 1 of the periodic table.
alkaline earth metal An element in the group 2 of the periodic table.
transition metal One of the elements in groups 3 through 12 of the periodic table.
nonmetal An element that lacks most of the properties of a metal.
diatomic molecule A molecule consisting of 2 atoms.
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 has some characteristics of both metals and non metals
semiconductor A substance that can conduct electric current under some conditions.
Created by: mchatham003
 

 



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