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Unit 4 Vocab.

Atomic Mass average mass of one atom of an 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 A row of elements in a periodic table arranged by atomic number
Atom smallest particle into which an element can be divided and still have the properties of that element
Electron Negatively charged particle found inside the nucleus of an atom
Nucleus center of an atom made up of protons and neutrons
Proton positively charged particle located in the nucleus of an atom
Group column of an elements in the periodic table in which elements have certain properties in common also called chemical family
Matter the material that all objects and substances are made of
Element Substances that are the building blocks of all matter made up of an atom
Compound matter mae of tow or more elements
Neutron in an atom particle with neutral charge lecated in the nucleus
Energy Level Amount of energy carriede by an electron in an atom determines the electrons average distance from the nucleus
isotype atoms of the same element with different numbers fo neutrons in the nucleus
Mass Number The sum of the protons and nuetrons in the nucleus
Atomic Number numbe of protons in the nucleus of an atom of an element
metal element usually solid with a shiny surface metals conduct electricity and thermal energy well
Mallealbe Term use d to describe material that can be pounded in to shapes
Ductile term use to describe a material that can be pulled out into long wire
Conductivity The ability of an object to transfer heat fo electricity to another object
Reactivity The ease and speed with which an element combines with the elements
Corrosion The gradual wearing away of metal element due to a chemical reaction
Alkali metal An element in Gl of the periodic table
Alkali Earth metal an element in G2 of the periodic table
Transition metal one of the elements in G3 of periodic table
alloy Mixture of two or more elements one which is metal
Nonmetal elements the lacks most of the properties of metal
Diatomic Molecule a molecule consisting of two atoms
halogen an element found in G17 of periodic table
noble Gas element in G18 of the periodic table
Metalliod element that has some characteristics of both metals and nonmetals
Semi Conductor Substance that can cinduct electricty undersome conditions
Created by: NVorrice