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Terms in this set (13)
All matter is made up of very small particles called?
An atoms _________ is equal to the weighted average of the mass of all its naturally occurring isotopes.
The __________ is the sum of the protons & _______ of the nucleus
mass number, neutrons
______________ are the building blocks of the ___________ of an atom.
______________ are ________________ charged and neutrons are __________ in charge.
protons, positively, neutral
___________ orbit the nucleus and are located in ___________ that surround the nucleus.
an atom's _______________ is equal to the number of protons in its nucleus
The ___________ of an element have the same # of protons but differ in the number of neutrons.
_______________ are formed from the gain or loss of electrons
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?
What are the five elements that almost all living things are made of?
oxygen, carbon, hydrogen, nitrogen, calcium
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