pH scales acids bases and alkalis Flashcards
1
Q
What are the three ways to find out if a liquid is an acid or alkaline?
A
Litmus Paper
Universal indicator
pH meter
2
Q
What happens when blue litmus paper turns red?
A
When blue litmus paper is placed in a substance that is acidic, it will turn to red. However, if placed in a substance that is basic or neutral, it will remain blue.
3
Q
What happens when red litmus paper turns blue?
A
When red litmus paper is placed into a basic substance, it will turn blue. If it comes in contact with an acidic or neutral substance, it will remain red.
4
Q
What is the disadvantage of using pH meter?
A
Disadvantage is that it only tells you if its an acid, alkali or neutral and doesn’t tell you what pH level it is.
5
Q
What is a base?
A
A base is any substance with a pH greater than 7.
