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Ch 2 Sec1

vocabulary

QuestionAnswer
everythng that occupies space and contains mass matter
quantity of matter an object has mass
substances that cannot be brocken down chemically into simpiler kinds of matter element
simplest part of an element that retains all of the properties of that element atom
central region; makes up the bulk mass of the atom and consists of protons and neutron nucleus
positivly charged; in the nucleus proton
no charge; in the nucleus neutron
the number of protons in an element atomic number
total number of protons and neutrons in an element mass number
negitivly charged electron
3D region around a nucleus that indicates the probable location of an electron orbital
atoms of the same element that have different number of neutrons isotope
made up of two atoms or more elements in fixed proportions compound
are the attractive forces that hold atoms togther chemical bond
forms when two atoms share one or more pairs of electrons covalent bond
simplest part of a substance that retains all of the properties of that substance and can exist in a free state molecule
atom or molecule with an electrical charge ion
the attractive force between oppisitly charged ions which forms when electrons are transferred from one atom to another ionic bond
Created by: mccuddenm16
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