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A P E M A N practice
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How many neutrons are in the nucleus of an atom that has a mass number of 36 and an atomic number of 25?
11
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What is the center of an atom containing protons and neutrons?
nucleus
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What type of charge does a proton have?
positive
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protons + neutrons =
mass number
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What make an atom a neutral atom?
same number of protons and electrons so the charges cancel out
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If an atom has 35 protons in the nucleus, how many electrons will it have orbiting the nucleus?
35
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What are the 3 subatomic particles that make up an atom?
protons, neutrons, electrons
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Where are the electrons located?
Electron Shells/cloud
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How many electrons does this element have?
56
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Where do you find the atomic number of an atom?
Above the chemical symbol in the periodic cell/ periodic table
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Use the image to answer the question. If P stands for protons and N stands for neutrons, what is the mass number of this element?
59
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How many protons does this element have?
49
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What type of charge does a electron have?
Negative
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What is the atomic # for Oxygen? Use a periodic table
8
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What type of charge does a neutron have?
Neutral/ No charge
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The identity of an atom is determined by what?
the number of protons
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What is the Mass Number for Oxygen if it has 9 neutrons?
17
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What is the atomic # for Silicon (Si) ? Use Periodic Table
14
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What does APE MAN stand for?
Atomic Number = Protons = Electron Mass Number-Atomic Number=Neutrons
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How many neutrons are in the nucleus of an atom with an atomic number of 25 and a mass of 56?
31
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