Unit 8 Review

Chemical Equations

100

Shows the same number of atoms for each element on both sides

What is a balanced equation?

200

The balanced chemical equation for when aluminum burns in oxygen to form aluminum oxide.

What is 3O₂ + 4Al ->2Al₂O₃?

300

The balanced chemical equation for when sodium sulfide reacts with nickel (II) nitrate to form nickel (II) sulfide and sodium nitrate.

What is Na₂S+Ni(NO₃)₂-> NiS + 2NaNO₃?

400

The balanced equation for when solutions of sodium carbonate and iron (III) chloride react to form solid iron (III) carbonate and sodium chloride in solution.

What is 3Na₂CO₃ + 2FeCl₃ -> Fe₂(CO₃)₃ + 6NaCl?

500

The balanced equation when hydrogen phosphate reacts with magnesium hydroxide to produce magnesium phosphate and water.

What is 2H₃PO₄ + 3Mg(OH)₂ -> 1Mg₃(PO₄)₂ + 6H₂O?

Limiting Reactant and Percent Yield

100

The reactant that does not run out

What is the excess reactant?

200

The equation for percent yield

What is (actual value/theoretical value) x 100%?

300

If 10 moles of carbon and 5 moles of oxygen gas combine to form CO2, this would be the limiting reactant. 

What is Oxygen Gas?

400

If 5 grams of hydrogen gas combined with 4 grams of Oxygen gas, this would be the excess reactant.

What is hydrogen?

500

The percent yield if the your lab group measures 20 grams of product, when you calculated a yield of 40 grams of product.

What is 50%?

Review

100

JJ Thomson's Atomic Model

What is  the plum pudding model?

200

The famous scientist who gave Christmas time lectures on candles.

Who is Michael Faraday?

300

If 3 moles of hydrogen gas combine with excess nitrogen gas, the number of moles of ammonia produced.

What is 2 moles?

400

The type of exothermic chemical change that takes place when a candle burn.

What is Combustion?

500

The expression for once side of the combined gas law.

What is (PV)/(nT)?