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15
×
Isotopes of the same element can differ in
mass number/number of neutrons
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15
×
What element is represented by the Bohr model?
Lithium
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15
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The number of valence electrons for elements in Group 16 is _____.
6
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15
×
By knowing the number of protons a neutral atom has, you should be able to determine
the number of electrons in the neutral atom
the name of the atom
two of these
the number of neutrons in the neutral atom
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15
×
Which one of the following statements about atomic structure is false?
Almost all of the mass of the atom is in the nucleus
An atom is mostly empty space.
Protons and neutrons in the nucleus are very tightly packed
Proton & neutron number is always the same in a neutral atom
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thief
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star
Double points!
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rocket
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banana
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15
×
How many valence electrons does this element have?
3
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15
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How many neutrons does an atom with an atomic mass of 9 and an atomic number of 5 contain?
4
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15
×
What does the number 84 in Krypton-84 represent?
the mass number
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seesaw
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fairy
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fairy
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thief
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15
×
According to Dalton's postulates, how do atoms relate to elements?
None of the above
Atoms of one element differ from atoms of other element
The same atom may be part of 2 or more elements
All elements are composed of atom & all atoms are identical
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15
×
How many protons, electrons, and neutrons does a neutral atom with an atomic number of 50 and a mass number of 120 contain?
50 protons, 50 electrons, 70 neutrons
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15
×
Which scientist discovered the electron?
Thomson
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15
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How are ions formed?
By adding or taking away an electron from an atom
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monster
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shark
Other team loses 25 points!
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shark
Other team loses 10 points!
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thief
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15
×
What particles form the nucleus of an atom?
protons and neutrons
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