acids and bases Flashcards
1
Q
in aqueous solutions, acids produce what?
A
hydrogen ions (H+)
2
Q
bases are chemicals that neutralise acids, what do they produce?
A
a salt and water
3
Q
what are bases that are soluble in water called?
A
alkalis
4
Q
in an aqueous solution, alkalis what?
A
hydroxide ions (OH-)
5
Q
acids have a pH between what?
A
0 and 6
6
Q
alkalis have a ph between what?
A
8 and 14
7
Q
what does green on the universal indicator mean?
A
neutral
8
Q
what does purple on the universal indicator mean?
A
very alkaline
9
Q
what does red on the universal indicator mean?
A
very acidic
10
Q
when we react an acid with an alkali what happens?
A
hydrogen ions react with hydroxide ions to produce water
