Gen Chem Atomic Structure 2013.txt
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Name the three subatomic particles of an atom and identify thier charge.
- Protons are positive
- Neutrons are neutral
- Electrons are negative
Name the three subatomic particles of an atom and state thier mass.
- Proton mass is 1 amu
- Neutron mass is 1 amu
- Electrons have no mass
What is the charge of the nucleus of an atom?
Atoms, as listed on the periodic table, have what charge?
Atoms are electrically neutral
How does one calculate the number of neutrons in an atom?
Atomic mass minus atomic number
How does one find the number of protons of an atom?
Atomic number on the periodic table
What are two ways to find the number of electrons an atom has?
Number of electrons is equal to the number of protons OR add up the electron configuration listed on the per table
How does an ion form?
When an atom loses or gains an electron
Has a K+1 ion gained or lost an electron?
Lost an electron
What uniquely identifies an element?
How many electrons does a fluoride ion have?
10 (Fluorine is atomic # 9, F-1 gains one)
What term is used for atoms of the same element that have different masses?
What two types of matter are considered pure substances?
Elements and compounds
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