Chemistry Flashcards
1
Q
What groups are the metals in
A
Group 1 and 2
2
Q
Who had a description of spherical atoms
A
Dalton atoms
3
Q
Why did Mendeleev leave gaps
A
Because he knew that there were missing elements
4
Q
Why are potassium sodium and lithium in group 1
A
Because they have similar properties
5
Q
What is always different about atoms of different elements
A
There protons
6
Q
A
