Oxygen, The Oxides, Hydrogen & Water Flashcards
1
Q
Acid
A
A substance that when dissolved in water produces an excess of H+ ions
2
Q
Acid rain
A
Rain that has a pH value below 5 produced when acidic gases, such as sulphur dioxide, dissolves in rain water
3
Q
Base
A
A substance that neutralises an acid to form a salt
4
Q
Catalyst
A
A substance that increases the rate of a chemical reaction but which is chemically unchanged at the end of the reaction
5
Q
Combustion
A
A chemical reaction involving burning
6
Q
Effervescence
A
The production of bubbles of gas during a reaction taking place in aqueous solution
7
Q
Neutralisation
A
The reaction between an acid and a base to form a salt
8
Q
Salt
A
A substance formed when the hydrogen ions in an acid are replaced by either metal ions or ammonium ions in a neutralisation reaction
