3.5.4 Acid + Metal reaction Flashcards
1
Q
Acid + Metal –>
A
Salt + Hydrogen
2
Q
What do acids and metals react to form?
A
Salt and Hydrogen
3
Q
What is a salt?
A
A salt is a compound formed when H is displaced from an acid.
4
Q
What are two observations in an acid and metal reaction?
A
- Fizzing
- Metal disappears
5
Q
Why is there fizzing in an acid and metal reaction?
A
Hydrogen gas is produced.
6
Q
Why does the metal disappear in an acid and metal reaction?
A
It is used up in the reaction.
7
Q
Why can’t Au, Ag or Cu be used in an acid and metal recation?
A
They are less reactive than H, so they can’t displace it.
8
Q
What is the chemical test for hydrogen?
A
A lit splint makes a squeaky pop. This is because the combustion of the hydrogen cause the test tube to resonate.
