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Protons and neutrons are located in the nucleus (the center of the ... neutrons an atom possesses? Find the following for the aluminum atom: Atomic number.
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Identify the subatomic particles and their charges?
Where are the subatomic particles located in an atom?
Atoms are made of smaller particles called subatomic particles: Protons (positive) Neutrons (neutral) Electrons (negative)
Protons and neutrons are located in the nucleus (the center of the atom).
Electrons are orbiting the nucleus.
The particles of opposite charges are attracted to each other, keeping electrons near the nucleus
The # of electrons = # of protons
Structure of an Atom Subatomic Particle
Location Charge Mass
Proton
Nucleus of the atom
Positive 1 amu
Neutron
Nucleus of the atom
Neutral 1 amu
Electron
quickly orbiting the nucleus
Negative Basically no mass
Describe the structure of an atom.
Be able to identify the number of protons, neutrons, and electrons in an atom.
What does the atomic number of an atom represent?
How do the atomic numbers compare between different atoms?
If an atom has 12 protons, how many electrons does it have?
Where do you find the atomic mass of an element on the periodic table?
How do you get the atomic number from this value?
How do you calculate the mass of an atom?
What does the atomic mass of an atom represent?
Number of protons in an atom
Each atom has a different number of protons
In atoms the number of protons always equals the number of electrons (making the atom neutral)