Ch 21 Acids And Bases Flashcards
1
Q
What is an acid
A
Ph higher than 7 eg. Lemon juice/ hydrochloride acid
2
Q
What is a base
A
Ph lower than 7 eg. Limewater/ toothpaste
3
Q
What are alkalis
A
Bases that dissolve in water
4
Q
What is neutral
A
Ph 7- eg. Water and salt solution
5
Q
Example of indicater
A
Litmuspaper / universal inducater
6
Q
What colour does litmus turn in acid
A
Blue turn red
7
Q
What colour does litmus turn in base
A
Red to blue
8
Q
What is a universal indicater
A
Universal indicator is a mixture of dyes that change to different colours according to how strong the acid or base is.
9
Q
What happens to acids in water
A
Dissociate into irons
10
Q
What happens to acids in water
A
Dissociate into irons
