Chemistry Balancing Test

Question 1

What is an aqueous solution?

Answer 1

A solid dissolved in water

Question 2

What is a precipitate?

Answer 2

A solid formed from a chemical reaction

Question 3

What uses an electrical current to decompose compounds?

Answer 3

Electrolysis

Question 4

In order for combustion to occur, what reactant must be present?

Answer 4

Oxygen

Question 5

What are the products for a complete combustion reaction?

Answer 5

Water and carbon dioxide

Question 6

What are the four factors that affect the rate of a reaction?

Answer 6

Temperature, concentration, surface area, and catalyst

Question 7

What speeds up a chemical reaction?

Answer 7

A catalyst

Question 8

What is Cu(NO3)3 an example of?

Answer 8

Compound

Question 9

What is Si an example of?

Answer 9

Element

Question 10

What is N2 an example of?

Answer 10

Diatomic molecule

Question 11

What are the 7 diatomic molecules?

Answer 11

H2, N2, O2, F2, Cl2, Br2, I2

Question 12

How do you find the percent yield?

Answer 12

Experimental over actual x 100

Question 13

Balance C3H8 + O2 — CO2 + H2)

Answer 13

C3H8 + 5O2 — 3 CO2 + 4H2O