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Conceptual Physics

Terms in this set (13)

All matter is made up of very small particles called?
atoms
An atoms _________ is equal to the weighted average of the mass of all its naturally occurring isotopes.
atomic mass
The __________ is the sum of the protons & _______ of the nucleus
mass number, neutrons
______________ are the building blocks of the ___________ of an atom.
nucleons, nucleus
______________ are ________________ charged and neutrons are __________ in charge.
protons, positively, neutral
___________ orbit the nucleus and are located in ___________ that surround the nucleus.
electrons, shells
an atom's _______________ is equal to the number of protons in its nucleus
atomic number
The ___________ of an element have the same # of protons but differ in the number of neutrons.
isotopes
_______________ are formed from the gain or loss of electrons
ions
What is the brownian motion?
The perpetual movement of particles that result in collisions between invisible atoms.
what part of the atom makes up most of its mass?
protons and neutrons
what is the smallest subatomic particle?
electrons
What are the five elements that almost all living things are made of?
oxygen, carbon, hydrogen, nitrogen, calcium
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