science

Term Definition
Atomic Mass average mass of one atom of an element
Periodic Table Of Elements achart where all elements are organized into periods and groups according to their propertes
chemica symbol one or two letter code that stands for an element of the elements name which maybe english latin or greek in origin
Period A row of elements in the periodic table arranged by atomic number
Group column of elements periodic table in which elements have certain proertes in commn also called chemical family
Matter The matter that all objects and substances are made of any thing that has mass and takes up space
Elements Substances that are the building blocks of all matter an element is made up of one kind of atom.
Compound Matter made of two or more elements the elements in a compound are chemically bonded cannot be separated by physical means and a compound from the elements that make it up
Atom Smallest particle into which an element can be deveded and still have the properics of that element.
Electron Negatively charged particle found outside the nucleus of an atom
Nuenleus structure neat the center of acell that contains th
Proton Positively charged particletocated in the nucleus of an atom
nuetron in an atom particle with a neutral charge i located in the nucleus
energy level The amount of energy carried by an electron in an atom determines the electons average distance from the nucleus
isotype atoms of the same element with different numbers of neutrons in the nucleus and thus different atomic masses i for example carbon 12 and carbon 14
mass number The sum of protons and neutrons in the nucleus of an atom
atomic number number of protons in the nucleus of one atom of an element
mutal a type of symbiosis in which both partners benfit from living together
Malleable A term used to describe material that cam[e