CHEMISTRY TEST TERM I

The type of this reaction :

Na₂O + H₂O -> 2NaOH

• Combination

• Displacement

• Decomposition

Which is the displacement reaction ?

• Fe(OH)₃ -> Fe₂O₃ + H₂O

• 2Ba + O₂ -> 2BaO

• 2Na + 2HCl -> 2NaCl + H₂

How to test oxygen ?

Write formula for reaction diagram

Barium oxide + Sulfuric acid -> Barium sunfate + Water

How to test water

Is this reaction balanced? If not, select the choice that best explains why it is not balanced.

Mg(NO₃)₂ + 2Na --> 2NaNO₃ + Mg

• Mg is not balanced

• Na is not balanced

• Balance

• O is not balanced

Which coefficient must go in the missing spot to balance the chemical equation?

___Cu + O₂ --> 2Cu₂O
( Write number to balance )

Draw structural formula

CSO

Draw structural formula

Na₂O

How to test hydrogen