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16 Cards in this Set
- Front
- Back
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Indirect Evidence
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Evidence you get without actually seeing or touching the object.
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Democritus
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Greek philosopher.
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"Atomos"
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not to be cut; indivisible
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Dalton
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English Chemist.
Theory: Is and atom indivisible? |
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Atomic Mass
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The proton plus the neutrons, added up.
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Atomic Number
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The number of protons in the nucleus of of and atom.
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Quark
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A particle that makes up all other known particles in the nucleus.
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Strong Force
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A force that blinds protons and neutrons in the nucleus.
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Weak Force
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A force that is the key to the power of the sun; responsible for a process known as radioactive decay.
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Electromagnetic Force
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The force of attraction or repulsion between particles in an atom.
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Gravity
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The force of attraction between all objects in the universe.
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Protons
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A subatomic particle that has a positive charge andis found in the nucleus of an atom.
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Electrons
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Negetivaly charged subatomic particle found in an area outside the nucleus of an atom.
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Isotope
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An atom of an element that has the same number of protons as another atom of the same element but a different number of neutrons.
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Mass Number
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The sum of the protons and nuetrons in the nucleus of an atom.
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Direct Evidence
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Evidence you get when actually seeing it or touching it.
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