Identifying Ions Flashcards
0
Q
What colour does potassium burn as
A
Lilac
1
Q
Ionic compound contains
A
A positive ion (metal)
A negative ion (non metal)
2
Q
What colour does copper burn as
A
Blue then green
3
Q
What colour does sodium burn as
A
Orange
4
Q
What colour does calcium burn as
A
Dark orange
5
Q
What colour does strontium burn as
A
Orange red
6
Q
What colour does lithium burn as
A
Bright red
7
Q
Why do chemicals burn as different colours
A
To do with the electrons in them moving around- when they collide they give of different amounts of energy which produces different amounts of light energy
8
Q
Why is heat needed to make chemicals’ colours visible
A
Electrons gain enough energy to collide and give off light energy
9
Q
Identifying cations and metal ions
A
Adding it to sodium hydroxide
