seperate chemistry 2 Flashcards
1
Q
what are five metal ions that can be identified using flame tests
A
lithium, sodium,potassium, calcium and copper
2
Q
A
3
Q
what flame colour does calcium turn when burned
A
orange-red
3
Q
what flame colour does lithium turn
A
crimson
3
Q
what flame colour does potassium turn
A
lilac
3
Q
A
3
Q
A
4
Q
what flame colour sodium turn when burned
A
yellow
5
Q
A
6
Q
what are the steps to identify metal ions in an ionic compound during a flame test
A
1.Submerge a nichrome wire loop in dilute hydrochloric acid to make sure that it is clean.
2.Place the nichrome wire loop into the sample to be tested.
Hold the nichrome wire loop in a Bunsen burner’s blue flame.
Observe any change in colour of the Bunsen flame.
6
Q
what flame colur does copper turn when burned
A
blue-green
6
Q
A
6
Q
A
6
Q
A
6
Q
A
7
Q
A
7
Q
A
7
Q
A
7
Q
A
7
Q
A
7
Q
A
7
Q
A
7
Q
A
7
Q
A
7
7
7
7
7
7
7
7
8
9
9
what are the apparatus for a flame test
bunsen burner and nichrome wire loop
9
9
9
9
9
9
9
9
9
9
9
10
10
10
10
10
10
10
10
10
11
12
12
12
12
12
12
13
13
13
13
13
13
13
13
14
14
14
14
14
14
14
15
16
where can metal ions are
16
16
16
16
16
16
16
16
16
16
16
16
17
17
17
17
17
17
17
17
