3Q Chemisry Test Review

How do you dispose of excess lab chemicals?

• Pour leftovers in the sink.

• Place leftovers in the trash.

• Ask teacher for proper disposal method.

• Put leftovers back in original container.

Which electron configuration is correct for an Neon, atomic number 10?

• F

• G

• H

• J

2.5 mol of O₂ are used. How many grams of CO₂ are produced?

• 1.83 x 10² g

• 6.6 x 10¹ g

• 8.5 x 10^-1 g

• 3.4 x 10^-2 g

In the reaction shown, what is the mole ration of H₂ to H₂O?

• 2:2

• 2:1

• 1:2

• 4:4

In the reaction shown, if element B is in excess, then...

• A is the limiting reactant.

• B is the limiting reactant.

• C is the limiting reactant.

• Both A and B are limiting reactants.

Which reaction is a single replacement reaction?

• F

• G

• H

• J

What is the limiting reactant when 2.00 g of NH₃ is mixed with 4.00 g of O₂.

• Oxygen

• Water

• Ammonia (NH₃)

• Nitrogen Monoxide (NO)

Using the reaction given, how many grams of O₂ are needed to produce 36 grams of water?

• 9 grams

• 16 grams

• 32 grams

• 40 grams

What are the coefficients that would correctly balance the equation shown?

• 2, 1, 2, 1

• 1, 2, 3, 1

• 1, 2, 1, 2

• 1, 1, 2, 1

Which type of reaction do you think the reactants will cause?

• double-replacement reaction

• synthesis reaction

• decomposition reaction

• single-replacement reaction