Types of Chemical Reaction and Balancing Equation

Combination reactions always:

• involve an element and an ionic compound.

• form only one product

• use only one reactant.

• require oxygen gas.

The equation below  is an example of

• double replacement reaction.

• combination reaction.

• single-replacement reaction.

• decomposition reaction.

The reaction  is a(n)

• combustion reaction.

• decomposition reaction.

• synthesis reaction.

• combination reaction.

Which of the following type of chemical reactions results in a single product?

• double replacement reaction.

• Synthesis/Combination Reaction

• single replacement reaction

• decomposition reaction

Which of the following has the correct coefficient to balance the chemical equation:

 

__ Na₃PO₄ + __ HCl → __ NaCl + __ H₃PO₄

• Na₃PO₄ + 3 HCl → NaCl + H₃PO₄

• Na₃PO₄ +3 HCl → 3 NaCl + H₃PO₄

• Na₃PO₄ + HCl → NaCl + H₃PO₄

• 3 Na₃PO₄ + HCl → 3 NaCl + H₃PO₄

Which of the following has the correct coefficient to balance the chemical equation:

 

__ CaCl₂ + __ Na₃PO₄ → __ Ca₃(PO₄)₂ + __ NaCl

• 2 CaCl₂ + 2 Na₃PO₄ → 2 Ca₃(PO₄)₂ + NaCl

• CaCl₂ + Na₃PO₄ → Ca₃(PO₄)₂ + NaCl

• 3 CaCl₂ + 2 Na₃PO₄ → Ca₃(PO₄)₂ + 6 NaCl

• 3 CaCl₂ + 2 Na₃PO₄ → Ca₃(PO₄)₂ + 3 NaCl

Which of the following has the correct coefficient to balance the chemical equation:

__ KOH + __ H₃PO₄ → __ K₃PO₄ + __ H₂O

• 2 KOH + H₃PO₄ → K₃PO₄ + H₂O

• 3 KOH + 2 H₃PO₄ → 3 K₃PO₄ + 3 H₂O

• KOH + H₃PO₄ → K₃PO₄ + 6 H₂O

• 3 KOH + H₃PO₄ → K₃PO₄ + 3 H₂O

How many Oxygen in 2(NO₃)?

• 1

• 6

• 3

• 5

Which of the following is NOT a true statement concerning what happens in all chemical reactions?

• The bonds of the reactants are broken and new bonds of the products are formed.

• The starting materials are named reactants.

• New atoms are formed as products.

• The ways in which atoms are joined together are changed.

In a combustion reaction, one of the reactants is _____.

• metal

• oxygen

• hydrogen

• nitrogen