The Periodic Table Flashcards
1
Q
Who made the periodic table?
A
dmitri mendeleev
2
Q
How many elements are there?
A
118
3
Q
Which element is the lightest?
A
Hydrogen
4
Q
What is the name of group 1 elements
A
alkali metals
5
Q
What is the middle bit called?
A
Transition Metals
6
Q
What are group 7 Elements called?
A
Halogens
7
Q
What are group 8 elements called
A
Noble gases
8
Q
How do you know what the atomic mass
A
its the bigger number
9
Q
An atom of an element has the electronic structure 2,8,8,1. How many electrons are in the shell nearest the nucleus?
A
2
10
Q
What is the periodic table made of
A
Chemical elements
11
Q
what is K
A
Potassium
12
Q
What is a Element?
A
A substance that only contains atoms with the same number of protons.
13
Q
He
A
Helium
14
Q
Pb
A
Lead
15
Q
Sodium + Chlorine
A
Sodium Chloride
