Cambridge Checkpoint Science 9: Salts

All acids contain

• hydrogen

• oxygen

• carbon

• sulfur

salts are formed chemically when

• solutions are left to evaporate slowly

• the hydrogen in an acid is replaced by a metal (or ammonium)

• the oxygen in an acid is replaced by a metal (or ammonium)

• solutions are made to evaporate quickly by heating

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

All salts formed when a metal reacts with H₂SO₄ are called:

• nitrates

• sulfates

• carbonates

• chlorides

All salts formed when a metal reacts with HNO₃ are called:

• nitrates

• sulfates

• carbonates

• chlorides

All salts formed when a metal reacts with HCl are called:

• nitrates

• sulfates

• carbonates

• chlorides

All salts formed when a metal reacts with H₂CO₃ are called:

• nitrates

• sulfates

• carbonates

• chlorides

Reacting a metal with an acid will produce

• a metallic salt and water

• a metallic salt and hydrogen

• a metallic salt and carbon dioxide

• a metallic salt and water and carbon dioxide

Why is it not a good idea to react sodium metal directly with an acid?

• sodium does not react easily when in direct contact with an acid, so will not produce a salt

• sodium is an alkali metal so will only react with an alkali to form a salt

• sodium is very reactive, so an "explosion" may occur

• sodium is unreactive, so it is better to use sodium oxide to produce a sodium salt

Tags

NGSS.HS-PS1-1

Select all that apply:

Why is it not a good idea to react copper or silver metal metal directly with an acid to make a salt?

• Both metals do not react easily when in direct contact with an acid, so will not produce a salt directly

• Both metals will only react with an alkali to form a salt

• Both are very reactive, so an "explosion" may occur

• Both metals are unreactive, so it is better to use their metal oxides to produce a salt

Tags

NGSS.HS-PS1-1

Reacting a metal oxide with an acid will produce

• a metallic salt and water

• a metallic salt and hydrogen

• a metallic salt and carbon dioxide

• a metallic salt and water and carbon dioxide