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Physics atoms

QuestionAnswer
the attraction between protons abd electrons can cause atoms to combine Bonding
electrical neutral neutron
second lightest element helium
atoms are much older than the material the compose. True or False? true
the most common type of molecule H20
in 1827 he studied pollen grains under a microscope. who is he? Robert brown
smallest particle of a substance is a molecule
this man said matter was made of atoms. John Dalton
the evidence that atoms exist is called Brownian motion
the 5 elements that make up living things: oxygen, carbon, hydrogen, nitrogen, calcium
atoms of the same element having different numbers of neutrons are isotopes
the number of protons in the nucleus is called the atomic number
the toal number of nucleons in the nucleus of an atom atomic mass unit
electrons have______ mass
the arrangement in of _______ in the shells dictate the atom's physical and chemical properties electrons
central region of an atom nucleus
atoms move fastest in gas
like charges repel
building blocks of matter an atom
atoms are the smallest particles of an element
a substance made of only 1 kind of atom is a element
forms when electrons are transfered between atoms Ionic bonds
the lightest element is hydrogen
some atoms are old as the universe
a substance that is made of atoms of different elements in a fixed proportion is a/an compound
water and carbon dioxide are made of molecules
atoms are mostly empty space. true or false? true
the nucleus contains most of the ____ of an atom mass
forms when two atoms share electrons covalent bonds
electrons orbit the nucleus
unlike charges attract
Created by: mkriegshauser
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