Gases in Reactions 4.39 Flashcards
Section:4
1
Q
When an element burns in air and reacts with oxygen what does it form
A
oxides
2
Q
What colour flame does magnesium burn with in air
A
A bright white flame
3
Q
What colour flame does Hydrogen burn with in air
A
An orangey/yellow flame
4
Q
What colour flame does Sulfur burn with in air
A
A pale blue flame
5
Q
What else is formed when Magnesium burns in air
Is it acidic or alkaline?
A
Magnesium oxide in the form of a white powder
it is slightly alkaline when dissolved in water
6
Q
How does Hydrogen burn in air
A
Very easily, can be explosive
7
Q
What is the combustion of hydrogen used for
A
To test for hydrogen gas
When hydrogen is present, gives a squeaky pop
8
Q
Is Sulfur alkaline or acidic when dissolved in water
A
Acidic
9
Q
what gas is produced when sulfur is burnt
A
sulfur dioxide
