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| STANDARDS |
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| PRIORITY STANDARDS: |
Strand II, Standard I, Benchmark I
5. Understand that matter is made of atoms and that atoms
are made of subatomic particles.
6. Understand atomic structure, including:
most space occupied by electrons
nucleus made of protons and
neutrons
isotopes of an element
masses of proton and neutron
2000 times greater than mass of electron
atom held together by proton-electron
electrical forces.
11. Know that some atomic nuclei can change, including:
spontaneous decay
half-life of isotopes
fission
fusion (the sun)
alpha, beta, and gamma radiation
Specifications:
Subatomic particles limited
to protons, neutrons, and electrons.
mass number calculations that
depend on number of particles in the nucleus |
| OBJECTIVES |
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OBJECTIVE (SWBAT):
Learn atomic theory and the development of the modern
understanding of the atom.
Describe the electrical charge, mass, and location for
the subatomic particles of a proton, a neutron, and an electron.
Define atomic number and mass number.
Given the atomic number and mass number of an atom, state
the number of protons, electrons, and neutrons for that atom.
Define the meaning of an atomic isotope and give the
number of protons, electrons, and neutrons in the isotopes of an element.
Write atomic symbols for isotopes.
Define atomic mass and calculate atomic mass from mass
numbers of isotopes.
BIG IDEAS:
All matter is made up of atoms.
Atoms consist of subatomic particles.
The atomic number is the number of protons in an atom.
In a neutral atom, the number of electrons equals the
number of protons.
ESSENTIAL QUESTIONS (SWBATA):
What is the underlying structure of matter?
What are atoms?
How does the periodic table show the number of protons
in an atom?
What is the relationship between the number of protons
and the number of electrons?
What does the mass number tell us of the number of subatomic
particles in the nucleus of an atom? |
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| VOCABULARY |
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| KEY VOCABULARY: |
| atom, Dalton’s Atomic Theory, subatomic particle, electrical
charges, electron, proton, nucleus, neutron, atomic mass unit (a.m.u.),
atomic number, mass number, isotope, atomic symbol, atomic weight (atomic
mass) |
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