Acids and Bases Flashcards
1
Q
What is the pH of a neutral substance (water)?
A
7
2
Q
What is a base?
A
A substance with a pH of greater than 7.
3
Q
What is an alkali?
A
A base that dissolves in water to form a solution.
4
Q
What is an indicator?
A
A dye that changes colour.
5
Q
Acids form ___ ions in water.
A
H+
6
Q
Define what electrolysis is.
A
The splitting up of ionic substances using electricity.
7
Q
Name all the elements in the reactivity series starting from most reactive going down to least reactive.
A
Potassium, sodium, lithium, calcium, magnesium, aluminium, zinc, iron, tin, lead, hydrogen, copper, silver, gold, platinum.
8
Q
What is the cathode?
A
Negative electrode
9
Q
What is the anode?
A
Positive electrode
10
Q
What is an acid?
A
A substance that forms aqueous solutions with a pH of less than 7.
