Term
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Definition
• Anything that takes up space
and has mass |
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Term
|
Definition
• A pure substance that can not
be broken down into other
substances by chemical
means |
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Term
|
Definition
• Any element that makes up
less than 0.01% of the mass
of a living organism but is
critical to the health of the
organism |
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Term
|
Definition
• A substance containing two or
more different elements that
are chemically combined
together |
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Term
|
Definition
• The simplest particle of an
element that retains all the
properties of that element |
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Term
|
Definition
• A subatomic particle with a single
unit of positive electric charge (+).
– One of the two types of
particles found in the nucleus of
an atom |
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Term
|
Definition
• A subatomic particle with a single
unit of negative electric charge (-).
– These particles found outside
the nucleus of an atom.
– These particles are involved in
chemical bonding |
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Term
|
Definition
• A subatomic particle that has no
charge (is electrically neutral).
– One of the two types of
particles found in the nucleus of
an atom |
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Term
|
Definition
• The central core of an atom that
contains protons and neutrons |
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Term
|
Definition
• The number of protons in an
atom's nucleus.
– This number is unique for each elemen |
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Term
|
Definition
• One of several forms of an
element, each containing the
same number of protons in their
atoms but a different number of
neutrons |
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Term
| Radioactive Isotope(Radio-Isotope) |
|
Definition
• An isotope in which the nucleus
decays (breaks down) over time,
giving off radiation in the form of
matter and energy. |
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