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18 Cards in this Set
- Front
- Back
- 3rd side (hint)
ATOM
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The smallest particle into which an element can be divided and still have the properties of that element.
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Still the same.
If an atom is divided by a chemical reaction two new substances will be created. |
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ATOMIC MASS
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Superscript number that gives total of number of protons and neutrons in an atom
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Left superscript
In a neutral atom the atomic mass will be 2 times the number of protons in the atom |
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ATOMIC MASS UNIT
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(amu) is defined to be 1/12 the mass of the carbon 12 nuclide.
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carbon 12
Carbon 12 is the standard for the atomic mass scale. |
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ATOMIC NUMBER
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Number of protons in an atom. Is shown as a subscript.
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Left subscript
In a neutral atom the atomic number will be 1/2 of the mass number |
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ATOMIC SYMBOL
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Atomic symbol has 3 parts. Body is the element. Left subscript is the number of protons. Left superscript is the mass number, equal to protons and neutrons in isotope
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Has 3 parts.
The atomic symbol tells what type of element and quantity of protons+neutrons |
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CHEMICAL SYMBOL
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Symbol that denotes the name of an element. Pb is the symbol for lead from the Latin word plumbum
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Pb
Lead is an element shown on the periodic table as Pb |
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ELECTRON
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A negatively charged atom that is located outside the nucleus of the atom.
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Negative
Electrons were discovered by J.J. Thomson in 1897. |
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GROUP
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Vertical column of elements on the periodic table.
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Up and down.
Elements in the same group have similar properties. |
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ISOTOPE
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Atoms of the same type, they have the same number of protons, but different numbers of neutrons.
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Same # P, different # N
Carbon-12 and carbon-13 both have 6 protons. C-12 has 6 neutrons and C-13 has 7 neutrons |
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MASS NUMBER
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The total number of protons plus neutrons in an atom.
The total number of protons plus neutrons in an atom. |
Total number.
The mass number is the left superscript. |
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METAL
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An element that is shiny, ductile, malleable and a good conductor.
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good conductor.
Metals are elements found on the left side of the periodic table. |
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METALLOID
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An element that has properties of both metals and nonmetals.
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Is and Is not.
Metalloids are found along the zigzag on the periodic table. |
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NEUTRON
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A neutral particle located in the nucleus of an atom
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Inside center
If you subtract the atomic number from the mass number you will find the number of neutrons in and atom. |
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NONMETAL
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An element that is not shiny, ductile or malleable and is not a good conductor.
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Right had side of the periodic table.
Nonmetals accept electrons when reacting with metals. |
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NUCLEUS
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The center of an atom. Contains the protons and neutrons.
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Center
Electrons are located around the nucleus of an atom. |
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PERIOD
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Horizontal row on the periodic table.
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Across
Elements in the same period have the same number of energy levels. |
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PROTON
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Positively charged particle that is located in the nucleus of the atom.
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Positive
Carbon 12 has six protons |
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SUBATOMIC PARTICLE
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Particles that are smaller then atoms.
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Not on Earth
Subatomic particles have been studied in particle accelerators. |
