Physical Science Fall 07 Review
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Transcript of Physical Science Fall 07 Review
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3. Structure of Matter
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Structure of MatterWhat are the letters in a chemical formula that represent the elements making up that compound?a. coefficients c. subscriptsb. chemical symbols
d. superscripts
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Structure of MatterWhat are the letters in a chemical formula that represent the elements making up that compound?a. coefficients c. subscriptsb. chemical symbols
d. superscripts
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Structure of MatterWhat is the mass, charge and location of a proton in an atom?
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Structure of MatterWhat is the mass, charge and location of a proton in an atom?
Mass = 1 amuCharge = + 1 positive Location = nucleus
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Structure of MatterWhat is the mass, charge and location of an electron in an atom?
Mass = Charge = Location =
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Structure of MatterWhat is the mass, charge and location of an electron in an atom?
Mass = almost zero (0.0001 amu) too small to count
Charge = -1 negative Location = electron cloud; swarming around, outside the nucleus.
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Structure of MatterWhat is the mass, charge and location of an neutron in an atom?
Mass =Charge = Location =
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Structure of MatterWhat is the mass, charge and location of an neutron in an atom?
Mass = 1 amuCharge = neutral/zero Location = nucleus
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Structure of MatterWhat is the difference between atomic number and atomic mass?
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Structure of MatterWhat is the difference between atomic number and atomic mass?
Atomic number is the number of protons and atomic mass is the number of protons + neutrons.
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Structure of MatterA mystery element has 5 neutrons, 6
protons, and 6 electrons. What is its atomic number?
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Structure of MatterA mystery element has 5 neutrons, 6
protons, and 6 electrons. What is its atomic number?
Atomic number = number of protons = 6
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Structure of MatterA mystery element has 5 neutrons, 6
protons, and 6 electrons. What is its atomic mass?
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Structure of MatterA mystery element has 5 neutrons, 6
protons, and 6 electrons. What is its atomic mass?
Mass = neutrons + protons = 5 + 6 = 11
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Structure of MatterA mystery element has 5 neutrons, 6
protons, and 6 electrons. What is the over all charge on this element?
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Structure of MatterA mystery element has 5 neutrons, 6
protons, and 6 electrons. What is the over all charge on this element?
+6 protons -6 electrons -= 0 neutral
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Structure of MatterA mystery element has 5 neutrons, 6
protons, and 6 electrons. What is the element?
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Structure of MatterA mystery element has 5 neutrons, 6
protons, and 6 electrons. What is the element?
Atomic number = 6 = Carbon
(see periodic chart)
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Structure of MatterA mystery element has 5 neutrons, 6
protons, and 6 electrons. Draw a Bohr model showing energy levels.
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Structure of MatterA mystery element has 5 neutrons, 6
protons, and 6 electrons. Draw a Bohr model showing energy levels.
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Structure of MatterA mystery element has 5 neutrons, 6 protons, and 6
electrons. Draw a Bohr model showing energy levels.
Electron (-)Proton (+)Neutron (0)NucleusEnergy Level 1Energy Level 2
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Structure of MatterHow would the atom pictured below form an ion?
Electron (-) 4Proton (+) 4Neutron (0) 4NucleusEnergy Level 1Energy Level 2
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Structure of MatterHow would the atom pictured below form an ion?
It would lose 2 electrons with a total of 2 electrons remaining Electron (-) 2Proton (+) 4 +2The atom would have an overall charge of +2
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Structure of MatterAtoms with the same number of
protons but different numbers of neutrons are called __________.
a. allotropes c. isotopesb. ions d. nutrinos
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Structure of MatterAtoms with the same number of
protons but different numbers of neutrons are called __________.
a. allotropes c. isotopesb. ions d. nutrinos
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Structure of MatterWhat is the name of this symbol?
a. chemical symbol
c. Bohr model
b. dot diagram d. Modern atomic model
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Structure of MatterWhat is the name of this symbol?
a. chemical symbol
c. Bohr model
b. dot diagram d. Modern atomic model
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Structure of MatterWhat do the dots stand for?
a. protons c. neutronsb. reactivity points
d. valence electrons
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Structure of MatterWhat do the dots stand for?
a. protons c. neutronsb. reactivity points
d. valence electrons