this one Flashcards
1
Q
periodic
A
describes something that occurs or repeats
2
Q
periodic law
A
repeating chemicals and physical properties of elements change
3
Q
period
A
in chemistry a horizontal row of elements in the periodic table
4
Q
group
A
a vertical column of elements in the periodic table
5
Q
alkali metal
A
one of the elements of group 1
6
Q
alkaline earth metal
A
one of the elements of group 2
7
Q
halogen
A
one of the elements of group 17
8
Q
noble gas
A
one of the elements of group 18
