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Chapter 2 sec 1

Chapter 2 section 1 vocab

QuestionAnswer
Matter anything that occupies space and has mass
Mass the quantity of matter and object has
Element substances that cannot be broken down chemically into simpler kinds of matter
Atom the simplest particles of an element that retains all the properties of that element
Nucleus central region, it makes up the bulk of the mass of an atom and consists of two kinds of subatomic particles, a proton and a nuetron
Proton is positivly charged
Nuetron is neutraly charged
Atomic Number the number of protons in an atom
Mass Number the total number of proton and nuetrons in an atom
Electron the number of positivly charged protons is balanced by an equal number of small negitively charged particles
Orbital a three-deimensional region around a nucleus that indicates the probable location of an electron
Isotope Atoms of the same element that have a different number of neutrons
Compound made up of atoms of two or more elements in fixed proportions
Chemical Bond attractive forces that hold atoms together
Covalent Bond forms when tow atoms share one or more pairs of electrons
Molecule the simplest part of a substance that retains all the properties of that substance and can exist in a free state
Ion An atom or molecule with and electrical charge
Ionic Bond Positive and negitive electrical charges attract each other, the sodium ion and the cholride ion attract each other
Created by: celesteb34
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