Question
                How is the mass number of an atom calculated? (1 point)
Responses
electrons plus neutrons
electrons plus neutrons
total number of protons
total number of protons
protons plus neutrons
protons plus neutrons
total number of electrons
            
        Responses
electrons plus neutrons
electrons plus neutrons
total number of protons
total number of protons
protons plus neutrons
protons plus neutrons
total number of electrons
Answers
                    Answer
            
    Which atom would be neutral?(1 point)
Responses
an oxygen atom with 16 electrons, 18 protons, and 16 neutrons
an oxygen atom with 16 electrons, 18 protons, and 16 neutrons
an oxygen atom with 4 electrons, 6 protons, and 4 neutrons
an oxygen atom with 4 electrons, 6 protons, and 4 neutrons
an oxygen atom with 8 electrons, 8 protons, and 9 neutrons
an oxygen atom with 8 electrons, 8 protons, and 9 neutrons
an oxygen atom with 9 electrons, 8 protons, and 8 neutrons
    
Responses
an oxygen atom with 16 electrons, 18 protons, and 16 neutrons
an oxygen atom with 16 electrons, 18 protons, and 16 neutrons
an oxygen atom with 4 electrons, 6 protons, and 4 neutrons
an oxygen atom with 4 electrons, 6 protons, and 4 neutrons
an oxygen atom with 8 electrons, 8 protons, and 9 neutrons
an oxygen atom with 8 electrons, 8 protons, and 9 neutrons
an oxygen atom with 9 electrons, 8 protons, and 8 neutrons
                    Answer
            
    A nitrogen ion has a mass of 14 and a charge of +2. Which subatomic particles does it contain?(1 point)
Responses
2 protons, 6 neutrons, and 6 electrons
2 protons, 6 neutrons, and 6 electrons
7 protons, 7 neutrons, and 5 electrons
7 protons, 7 neutrons, and 5 electrons
7 protons, 7 neutrons, and 9 electrons
7 protons, 7 neutrons, and 9 electrons
4 protons, 4 neutrons, and 6 electrons
    
Responses
2 protons, 6 neutrons, and 6 electrons
2 protons, 6 neutrons, and 6 electrons
7 protons, 7 neutrons, and 5 electrons
7 protons, 7 neutrons, and 5 electrons
7 protons, 7 neutrons, and 9 electrons
7 protons, 7 neutrons, and 9 electrons
4 protons, 4 neutrons, and 6 electrons
                    Answer
            
    Which option is an isotope with 6 protons and 8 neutrons? (1 point)
Responses
carbon-8
carbon-8
oxygen-14
oxygen-14
carbon-14
carbon-14
oxygen-6
    
Responses
carbon-8
carbon-8
oxygen-14
oxygen-14
carbon-14
carbon-14
oxygen-6
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