Detecting Cations Flashcards
1
Q
Name the metal used in flame tests and why it is used
A
Nichrome wire because it is inert
2
Q
Cations are positive or negative
A
Positive
3
Q
Red flame
A
Lithium
4
Q
Yellow flame
A
Sodium
5
Q
Lilac flame
A
Potassium
6
Q
Orange red flame
A
Calcium
7
Q
Green blue flame
A
Copper
8
Q
Chemical used in hydroxide precipitate tests
A
Sodium hydroxide
9
Q
Green precipitate
A
Iron (ll)
10
Q
Orange brown precipitate
A
Iron (lll)
11
Q
Blue precipitate
A
Copper (ll)
12
Q
White precipitate, doesn’t dissolve in excess solution
A
Calcium
13
Q
White precipitate, dissolves in excess solution
A
Zinc