Elements And The Periodic Table 22 Flashcards
Isotope plutonium-238 used for batteries to power
Long-term space travel
As plutonium-238 decays,
It gives off heat that is converted into energy
If an atom has a charge, it’s called an
Ion
A negative charged ion aka
An anion
An anion results when an atom gains one or more
Electrons
A positively charged ion aka
A cation
A cation results when an atom loses or
Gives away one or more electron
A - and a + charge
Attract
Negative and negative charge
Repel
+ and + charges
Repel
Like repels
Like
A cation attracted to an
Anion
A positive ion repelled by
Another positive ion (cation)
Negative ion repelled by
Another negative ion (anion)
Neutral atoms _ each other
Neither attract nor repel
Periodic table structure is based on element’s
Mass
Atomic mass is the weighted average based on
Relative abundance of isotopes
_ reorganized Mendeleev’s table by atomic number, not mass
Henry Moseley
Henry Moseley is a British
Chemist
Anion example (c,n)
Chloride
Nitrate
Anion example (s,p)
Sulfate
Phosphate
Cation example (L, s, p)
Lithium
Sodium
Potassium
