Acids and Bases Flashcards
What is a Acid
A substance which provides H+ (hydrogen ions)
what is a base
Any compound that reacts with an acid to neutralise it and produce water
what is a pH scale
scale from 0-14 that measures the concentration of H+ ions
pH
The value that is used to express the acidity of a solution
what is Neutralisation
the reaction of an acid and base to form a neutral solution of water and salt
What is a indicator ?
A compound that can change colour depending on conditions such as pH
What is an Alkali?
Releases OH- ions in solution; a soluble base
What is HCI
The chemical formula for hydrochloric acid
What is the formula for sulphuric acid
H₂SO₄
What is the formula for nitric acid
HNO₃
Whats a strong acid ?
An acid that fully dissociates when in solution to produce H+ ions
what is neutral on a pH scale
A substance that is 7 on the pH scale
What is a weak acid
An acid that only partially dissociates when dissolved in water to produce H+ ions
what is sulphates
salts formed by sulphuric acid reacting with a base/alkali
what does this do carbon dioxide + salt + water
products of a carbonate reacting with an acid
what are nitrates
the salts produced by nitric acid reacting with bases/alkalis
what are chlorides
the salts produced by hydrochloric acid reacting with bases/alkalis
what is the colour of litmus in acid
red
colour of litmus in alkali
blue
what is the colour of phenolphthalein in acid
colourless
colour of phenolphthalein in alkali
pink
