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Chem 1020 Exam 2.
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Exam of 3 pages for the course Biology 101 at Biology 101 (Chem 1020 Exam 2.)
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Chem 1020 Exam 2Row is called _______ on the periodic table - ANS-period
Column is called _____ on the periodic table - ANS-group
How are elements grouped by similarity on the periodic table? - ANS-By group/column
Metals, metalloids, and nonmetals on the periodic table - ANS-most are metals - all of
the ones on the left and middle (except Hydrogen on top) until the staircase of
transitional metals, and then the nonmetals on the right upper side
Alkali metals - ANS-Group A1
lithium, sodium, potassium, etc. soft metals that react violently with water
Alkaline earth metals - ANS-Group 2A
magnesium and calcium
also reactive but less violent than the alkali metals
Halogens - ANS-Group 7a
all exist as diatomic - two
react quickly with metals and others to form compounds (bleach, teflon, table salt, etc)
Noble Gases - ANS-Group 8A
very stable, don't really react with other elements to form compounds - all gases at room
temp
How do you describe particles? - ANS-Mass
Charge
1 AMU - ANS-1.66 x 10^-27 kg (protons and neutrons are about 1 AMU)
atomic number - ANS-the number of protons/electrons in an atom
mass number - ANS-sum of the number of protons and neutrons in an atom (periodic
table doesn't show this)
Isotope - ANS-atoms with the same number of protons but different numbers of
neutrons
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