The periodic table Flashcards
1
Q
The periodic table shows all the water that have been discovered
A
All the elements
2
Q
Vertical columns are called?
A
Groups
3
Q
Horizontal rows are called what?
A
Periods
4
Q
Approximately how much of the elements are metals?
A
75%
5
Q
Approximately how much of the elements are nonmetals?
A
25%
6
Q
The block in the middle between group 2 and group 3 is known as the what metals?
A
The transition metals
7
Q
Elements that easily combine with others are said to be what?
A
Are said to be reactive
8
Q
Group 1 and 7 are generally quite what?
A
Reactive
9
Q
Group 0 (the noble gasses) are very what?
A
Are very unreactive
