6.2 the pH scale Flashcards
1
Q
What is the pH scale?
A
A scale from 0-14 that tells you how acidic or basic a solution is.
2
Q
What pH are acidic, neutral and basic substances
A
Strong acid: Have a pH of 1 to 2
Acidic Solutions: Have a pH less than 7
Neutral solutions: Have a pH of 7
Basic Solutions: Have a pH more than 7
Strong base: Have a pH of 12 to 14
3
Q
How can we change the pH of a substance?
A
To make an acid become neutral you add water and to make a base become neutral you add water.
4
Q
What ion do acidic substances release?
A
H+ ions
5
Q
What ion do basic substances release?
A
OH- ions
6
Q
What is special about water and the ions it releases?
A
Water is neutral so it releases both H+ and OH- ions
