Tests For Cations Flashcards
1
Q
What are cations?
A
- positive ions
- metal ions
2
Q
How do you carry out a flame test?
A
- nichrome wire dipped in water/HCl
- then dipped in substance
- substance put into flame
3
Q
During the flame test, what colour does lithium go?
A
Crimson
4
Q
What is the ion for lithium?
A
Li+
5
Q
During the flame test, what colour does sodium go?
A
Yellow
6
Q
What is the ion for sodium?
A
Na+
7
Q
During the flame test, what colour does potassium go?
A
Lilac
8
Q
What si the ion for potassium?
A
K+
9
Q
During the flame test, what colour does calcium go?
A
Brick red
10
Q
What is the ion for calcium?
A
Ca2+
11
Q
During the flame test, what colour does copper go?
A
Green
12
Q
What is the ion for copper?
A
Cu2+
13
Q
During the flame test, what colour does barium go?
A
Apple green
14
Q
What is the ion for barium?
A
Ba2+
15
Q
What happens if a mixture is flame tested?
A
Flame colours masked making it hard to differentiate
