Amphoteric

Which one of the following is an amphoteric oxide?

• Zinc oxide

• magnesium oxide

• sulfur oxide

• copper(II) oxide

Tags

NGSS.HS-PS1-1

Which one of the following oxides will dissolves in dilute hydrochloric acid and also in dilute aqueous solution hydroxide?

• Zinc oxide

• iron(III) oxide

• copper(II)oxide

• calcium oxide

Which of the following oxides reacts with aqueous sodium hydroxide to give a salt?

• Copper(II)Oxide

• Iron(II) oxide

• magnesium oxide

• Zinc oxide

The oxide of a metal was found to react both with hydrochloric acid and with sodium hydroxide solution. Which one of the following is the best description of the oxide?

• acidic

• basic

• neutral

• amphoteric

Which one of the following gives the best order for describing the oxides ZnO, CO, Na₂O, SO₂?

• basic, acidic, basic, acidic

• basic, neutral, acidic, amphoteric

• amphoteric, neutral, basic, acidic

• basic , amphoteric , acidic, acidic

Which one of the following elements will burn in oxygen to form an acidic oxide?

• carbon

• calcium

• magnesium

• iron

Which of the following elements is most likely to form an amphoteric oxide?

• aluminium

• nitrogen

• sodium

• magnesium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following elements burns in air to form an oxide which, when shaken with water, gives a solution with a pH grater than 7?

• carbon

• hydrogen

• magnesium

• sulfur

Which oxide can react with an acid and with an alkali?

• aluminium oxide

• copper(II) oxide

• iron(II) oxide

• magnesium oxide

Aluminium form an amphoteric oxide

Which information about aluminium oxide can be deduce from this information?

• it displaces copper from aqueous copper(II) sulfate

• it forms a salt with aqueous sodium hydroxide

• it reduced by carbon

• It is soluble in water