Chemical tests Flashcards
1
Q
What colour does lithium burn with in a flame?
A
Red
2
Q
What colour does sodium burn with in a flame?
A
Yellow
3
Q
What colour does potassium burn with in a flame?
A
Lilac
4
Q
What colour does calcium burn with in a flame?
A
Orange/red
5
Q
What colour does copper burn with in a flame?
A
Blue/green
6
Q
When NaOH is added what is formed from Copper, Cu2+?
A
A blue precipitate is formed
7
Q
When NaOH is added what is formed from Iron, fe2+?
A
A sludgy green precipitate is formed
8
Q
When NaOH is added what is formed from Iron, fe3+?
A
A reddish brown precipitate is formed
9
Q
What is the test for NH4 (ammonia)?
A
Damp litmus paper will go from red to blue
10
Q
What is the test for carbonates?
A
Add dilute HCl to test sample, is carbonates are present then it will fizz with CO2
