CHEM 1020 EXAM 2 | QUESTIONS WITH VERIFIED
ACCURATE ANSWERS | 2026
Row is called _______ on the periodic table - Answers - period
Column is called _____ on the periodic table - Answers - group
How are elements grouped by similarity on the periodic table? - Answers - By
group/column
Metals, metalloids, and nonmetals on the periodic table - Answers - 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 - Answers - Group A1
lithium, sodium, potassium, etc. soft metals that react violently with water
Alkaline earth metals - Answers - Group 2A
magnesium and calcium
also reactive but less violent than the alkali metals
Halogens - Answers - Group 7a
all exist as diatomic - two
react quickly with metals and others to form compounds (bleach, teflon, table salt, etc)
Noble Gases - Answers - Group 8A
very stable, don't really react with other elements to form compounds - all gases at room
temp
How do you describe particles? - Answers - Mass
Charge
1 AMU - Answers - 1.66 x 10^-27 kg (protons and neutrons are about 1 AMU)
atomic number - Answers - the number of protons/electrons in an atom
mass number - Answers - sum of the number of protons and neutrons in an atom
(periodic table doesn't show this)
Isotope - Answers - atoms with the same number of protons but different numbers of
neutrons
(same atomic number different mass number)
ACCURATE ANSWERS | 2026
Row is called _______ on the periodic table - Answers - period
Column is called _____ on the periodic table - Answers - group
How are elements grouped by similarity on the periodic table? - Answers - By
group/column
Metals, metalloids, and nonmetals on the periodic table - Answers - 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 - Answers - Group A1
lithium, sodium, potassium, etc. soft metals that react violently with water
Alkaline earth metals - Answers - Group 2A
magnesium and calcium
also reactive but less violent than the alkali metals
Halogens - Answers - Group 7a
all exist as diatomic - two
react quickly with metals and others to form compounds (bleach, teflon, table salt, etc)
Noble Gases - Answers - Group 8A
very stable, don't really react with other elements to form compounds - all gases at room
temp
How do you describe particles? - Answers - Mass
Charge
1 AMU - Answers - 1.66 x 10^-27 kg (protons and neutrons are about 1 AMU)
atomic number - Answers - the number of protons/electrons in an atom
mass number - Answers - sum of the number of protons and neutrons in an atom
(periodic table doesn't show this)
Isotope - Answers - atoms with the same number of protons but different numbers of
neutrons
(same atomic number different mass number)
