Acids And Bases Flashcards
(17 cards)
Where does the pH scale start and stop?
0-14
What is the pH scale?
A measure of how acidic or alkaline a solution is
The lower the pH of a solution, the more ___ it is
Acidic
If the pH is low, is the solution an acid or alkali?
Acid
If the pH is high, is the solution an acid or alkali?
Alkali
What pH does a neutral substance have?
7
What is an indicator?
An indicator is a dye that changes colour depending on whether it’s above or below a certain pH
How can you measure pH electronically?
A PH probe attached to a pH meter
What do acids and bases do to each other?
Neutralise each other
What is an acid?
An acid is a substance that forms an aqueous solution with a pH of less than 7
What is a base?
A base is any substance that will react with an acid to form a salt
What is an alkali?
An alkaline is a base that dissolves in water to form a solution with a pH greater than 7
What ions do acids form in water?
H+
What ions do alkalis form in water?
OH-
What is the reaction between acids and bases called?
Neutralisation
What is the word equation for neutralisation?
Acid + base —> salt + water
H+ ions react with OH- to produce what?
Water
