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30 Cards in this Set
- Front
- Back
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Define atom.
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It is the smallest particle that retains the properties of its elements.
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Atoms are composed of three subatomic particles. Name them.
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Protons
Neutrons Electrons |
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The _____ is at the center of the each atom.
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nucleus
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What is contained in the nucleus?
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Protons and Neutrons
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Where in each atom are the electrons located?
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Outside the nucleus in their orbits
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What determines the total volume of an atom?
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the orbits of the electrons
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What is the relative mass of a proton?
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1
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What is the relative charge of a proton?
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+1
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What is the relative mass of a neutron?
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1
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What is the relative charge of a neutron?
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0
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What is the relative mass of an electron?
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0
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What is the relative charge of an electron?
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-1
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What subatomic particle determines the element?
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the protons
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_____ _____ is displayed as a whole number on the periodic table and determines what element you have.
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atomic number
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If the number of electrons in an atom is equal to the number of protons, then the charge is _____.
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neutral
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If the number of electrons in an atom is > the number of protons, then the charge is _____.
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negative
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If the number of electrons in an atom is < the number of protons, then the charge is _____.
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positive
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If an atom has a negative charge , then it is called a/an _____.
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anion
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If an atom has a positive charge , then it is called a/an _____.
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cation
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Fill in the missing information:
Element = sodium Atomic # = ? # of protons = ? # of electrons = ? Charge = ? Ionic Symbol = ? |
Element = sodium
Atomic # = 11 # of protons = 11 # of electrons = 10 Charge = +1 + Ionic Symbol = Na NOTE: Remember, in its elemental form sodium is always an ion. |
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Fill in the missing information:
Element = ? Atomic # = 16 # of protons = ? # of electrons = ? Charge = ? Ionic Symbol = ? |
Fill in the missing information:
Element = sulfur Atomic # = 16 # of protons = 16 # of electrons = 18 Charge = -2 2- Ionic Symbol = S NOTE: Remember, in elemental form, sulfur is always an ion. |
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Fill in the missing information:
Element = ? Atomic # = ? # of protons = 20 # of electrons = ? Charge = ? Ionic Symbol = ? |
Element = calcium
Atomic # = 20 # of protons = 20 # of electrons = 18 Charge = +2 2+ Ionic Symbol = Ca NOTE: Remember, in elemental form, calcium is always an ion. |
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Fill in the missing information:
Element = ? Atomic # = ? # of protons = ? # of electrons = ? Charge = ? 3- Ionic Symbol = P |
Element = ?
Atomic # = 15 # of protons = 15 # of electrons = 18 Charge = -3 3- Ionic Symbol = P NOTE: Remember, in elemental form, phosphorus is always an ion. |
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Define mass number.
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Neutrons + Protons
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What are isotopes?
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of the same element with different mass numbers/# of neutrons
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Using this shorthand way of describing an element, what do the "A", the "X", and the "Z" stand for (see the picture)?
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A = atomic mass (# of protons + neutrons)
X = element symbol Z = atomic number (# of protons) |
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State the element, the atomic mass, and the atomic number for the following (see the picture):
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element = Uranium
atomic mass = 238 atomic number = 92 |
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State the element, the atomic mass, and the atomic number for the following (see picture):
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element = Helium
atomic mass = 4 atomic number = 2 |
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State the element, the atomic mass, and the atomic number for the following (see picture):
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element = Beryllium
atomic mass = 9 atomic number = 4 |
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State the element, the atomic mass, and the atomic number for the following:
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element = Helium
atomic mass = 3 atomic number = 2 |
