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