Acids,Bases and Salts defintions

Question 1

Acid

Answer 1

Releases H+ ions in aqueous solution. An acid is a proton donor.

Question 2

Base

Answer 2

A species that is a proton acceptor.

Question 3

Alkali

Answer 3

A type of base that dissolves in water forming hydroxide ions, OH-(aq) ions.

Question 4

Why are ammonia and organic amino compounds bases?

Answer 4

These compounds contain a nitrogen atom with a lone pair of electrons. The lone pair on the nitrogen is able to form a bond with a H+ ion, hence the compound can act as a proton acceptor.

Question 5

Salt

Answer 5

A chemical compound formed from an acid,when a H+ ion from the acid has been replaced by a metal ion or another positive ion, such as the ammonium ion, NH4+.

Question 6

Ionic equation

Answer 6

An equation for a reaction showing what atoms actually change, the spectator ions are not in the ionic equation.

Question 7

spectator ion

Answer 7

Ions that are present but take no part in the chemical reaction.

Question 8

lone pair

Answer 8

An outer shell pair of electrons that is not involved in chemical bonding.

Question 9

precipitate

Answer 9

A solid that comes out of solution.