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9 Cards in this Set
- Front
- Back
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Define:
Matter |
Matter is defined as anything that occupies space and has mass.
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Define: O,C,H,N,Ca,P,K,S,Na,Fe,Mg.
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Oxygen, Carbon, Hydrogen, Nitrogen, Calcium, Phosphorus, Potassium, Sulfur, Sodium, Iron, Magnesium
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Define:Atoms
Protons Neutrons Electrons |
Atom: Smallest units of matter that retains the properties and characteristics of an element.
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Define:Protons
Neutrons Electrons |
Subatomic particles with a (+) charge. Found within the nucleus
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Define:Neutrons
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Subatomic particle neutral charge. Found with in the nucleus.
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Define:Electrons
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Subatomic particles found outside of the nucleus that have a (-) charge
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Define: Isotopes
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Atoms of an element that have different numbers of neutrons and therefore have different mas numbers.
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Define: Half life
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The time required far half of the radioactive atoms in a sample of that isotope to decay into a more stable form.
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Define: Atomic number
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The number of protons in the nucleus of an atom.
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