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ICMS PhySci1

Atoms

QuestionAnswer
smallest unit of an element that still has the properties of that element; the building blocks of matter atom
subatomic particle that has a negative charge (-); found outside the atom's nucleus electron
center of an atom made up of protons and neutrons nucleus
region or area around the nucleus where electrons are likely to be found electron cloud
subatomic particle that has a positive charge (+); found in the atom's nucleus proton
unit of mass that describes the mass of an atom; a proton = 1 amu; a neutron = 1 amu atomic mass unit
subatomic particle that has no charge; found in atom's nucleus neutron
number of protons in the nucleus of an atom; it also tells the number of electrons in a neutral atom. atomic number
atom that has the same number of protons, but different number of neutrons; same atom with different atomic masses isotope
number of protons plus neutrons in the nucleus of an atom; the sum of protons and neutrons in the nucleus of an atom mass number
how much the atom weighs; the mass of an atom expressed in atomic mass units; this number is usually a decimal number for that element on the periodic table atomic mass
particles that are smaller than the atom and make up the atom. subatomic particle
anything that has mass and takes up space matter
substance that cannot be broken down or separated into simpler substances by chemical means element
the amount of matter ( or atoms) in an object mass
thick or heavy dense
how big something is massive
the amount of space an object takes up volume
Created by: coachjackson
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