Paper 1 chemistry Flashcards
1
Q
Chromatography?
A
Separate soluble solids
2
Q
crystallisation?
A
separate solute from solution
3
Q
simple distillation?
A
solvent from solution
4
Q
Rf value for?
A
identify substances in chromatography
5
Q
Rutherford-
Bohr-
Chadwick-
A
r-nuclear model (nucleus)
b-planetary model (energy levels)
c-neutrons
6
Q
What did Mosley discover?
A
protons
7
Q
What did Mendeleev arrange elements by?
A
atomic number
8
Q
What type of densities do transition metals have?
A
high