C1- the periodic table Flashcards
1
Q
what did mendeleevs periodic table include?
A
- had gaps in it
- showed elements with similar chemical properties lined up in groups
2
Q
how are things arranged in the modern periodic table?
A
- elements are arranged in rows, called periods, in order of increasing atomic number
- elements with similar properties are placed in vertical columns, called groups
3
Q
what is the maximum amount of electrons the first shell of an atom can hold?
A
2
4
Q
what is the maximum amount of electrons the second shell of an atom can hold?
A
8
5
Q
what does the period number of the periodic table show you about the atom?
A
number of shells
6
Q
what does the group number in the periodic table tell you about the atom?
A
number of electrons in outermost shell
7
Q
do metals have high or low boiling/melting points?
A
high
8
Q
do non metals have high or low boiling points?
A
low
9
Q
are metals good conductors of electricity
A
yes
10
Q
are non metals good conductors of electricity?
A
no
