C3-2 Ionic equations and metal reactions

Which of these answers is NOT true for ionic equations?

• They can be used to show how ions change in any reaction.

• You can write an ionic equation for any reactions involving ions.

• In an ionic equation only the reacting particles are included.

• Anything that is the same on both sides of an equation is left out of an ionic equation.

The reaction of sodium and hydrochloric acid can be written:

2Na + 2HCl -> 2NaCl + H2

Which answer shows the correct ionic equation for this reaction?

• Na + HCl -> Na+ + H+

• Na + 2H+ -> Na+ + H2

• Na+ + 2H+ -> NaCl + H2

• Na + H+ -> Na+ + H

Tags

NGSS.MS-PS1-5

More reactive metals displace less reactive metal salts.

If you put an iron nail into copper sulphate a displacement reaction occurs.

Which answer shows the correct ionic equation for this reaction?

• Cu + FeSO4 -> Fe + CuSO4

• Fe + CuSO4 -> Cu + FeSO4

• Cu2+ + Fe2+ -> Fe2+ + Cu2+

• Fe + Cu2+ -> Fe2+ + Cu

Tags

NGSS.MS-PS1-2

More reactive metals displace less reactive metal salts.

Zinc is more reactive than copper.

Which answer shows the correct ionic equation for this reaction?

• Cu + ZnSO4 -> Zn + CuSO4

• Zn + CuSO4 -> Cu + ZnSO4

• Zn + Cu2+ -> Zn2+ + Cu

• Cu2+ + Zn2+ -> Zn2+ + Cu2+

Tags

NGSS.MS-PS1-2

Order of reactivity: Mg>Zn>Fe>Cu.

Which of the following is correct?

• Magnesium will not displace any metal other than copper

• Copper will displace all of the other metals

• Zinc is more reactive than Copper

• Iron is less reactive than magnesium

Oxygen is in group 6 of the periodic table.

Which is the correct ion for Oxygen?

Magnesium is in group 2 of the periodic table.

Which is the correct ion for magnesium?

Tags

NGSS.HS-PS1-1

Nitrogen is in group 5 of the periodic table.

Which is the correct ion for nitrogen?

Order of reactivity: Mg>Zn>Fe>Cu.

Which of the following is NOT correct?

• Zinc displaces both copper and iron

• Copper can not be displaced by iron and zinc

• Iron can displace magnesium but not zinc

• Magnesium can not be displace by copper or zinc

Complete the ionic equation for the reaction of magnesium and iron sulphate.

Magnesium is more reactive than iron.

Mg + Fe2+ -> Fe + ?

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5