Balancing Chemical Equations

1.   What does balancing equations involve?

• adjusting the subscripts

•   adjusting the coefficients

• adjusting both subscripts and coefficients

• adjusting the masses of reactants and products

1.   All of the following are chemical reactions EXCEPT ________

• Burning of paper.

• Freezing of potassium nitrate solution.

• Sodium hydroxide is added to nitric acid.

• Potassium fluoride and calcium nitrate are mixed.

• 2,1,3

• 3,2,2

• 2,2,1

• 2,3,2

  In chemical reaction, the mass of the product is _____________

• undetermined

• equal to the mass of the reactants

• less than the mass of the reactants

• greater than the mass of the reactants

• gas

• yields

• reacts with

• heat is applied