Chemical Reactions and the Mole

Chemical Reactions

100

This type of reaction is the opposite of a decomposition reaction.

What is a synthesis reaction?

200

These substances are used up in a chemical reaction to produce new substances.

What are reactants?

300

This type of reaction involves 2 compounds reacting to form 2 new compounds

What is a double replacement reaction?

400

What type of reaction is shown below?

HF + Na -> NaF + H₂​​​​

What is a single replacement reaction?

500

Classify and balance the following chemical equation:

__ CH₄ + __ O₂ -> __ CO₂ + __ H₂O

Type of reaction: combustion

Balanced equation: CH₄ + 2O₂ -> CO₂ + 2H₂O

Balancing Equations

100

This Law is followed when balancing a chemical equation.

What is the Law of Conservation of Mass?

200

Balance the following equation:

__ H₂O₂ -> __ H₂O + __ O₂

2 H₂O₂ -> 2 H₂O + O₂

300

Balance the following equation:

__ Ag₂S -> __ Ag + __ S₈

8 Ag₂S -> 16 Ag + S₈

400

Balance the following equation:

__ BaCl₂ + __Na₂SO₄ -> __ BaSO₄ + __ NaCl

BaCl₂ + Na₂SO₄ -> BaSO₄ + 2 NaCl

500

Balance the following equation:

__ C₃H₈ + __ O₂ -> __ CO₂ + __ H₂O

C₃H₈ + 5 O₂ -> 3 CO₂ + 4 H₂O

The Mole

100

This Italian scientist has quite a large number named after him.

Who is Avogadro?

200

6.02 x 10²³ molecules of H₂O is equal to _____ mole of H₂O.

What is 1 mole?

300

The molar mass of carbon dioxide is ________ g/mole.

What is 44 g/mole?

400

2 moles of NaOH has a mass of ___________ g.

What is 80 grams?

500

List the following in increasing order:

9.03 x 10²³ atoms of Na

23 grams of Na
2 moles of Na

23 grams of Na
9.03 x 10²³ atoms of Na
2 moles of Na

Mo' Money Mole Problems

100

This is the unit for molar mass.

What is g/mole?

200

How many oxygen atoms is in the chemical formula below?

Mg₃(PO₄)₂

What is 8?

300

This is the mass of 4.5 moles of NH₃.

What is 76.5 g?

400

This is the number of molecules in 154 g of CO₂.

What is 2.107 x 10²⁴ molecules?

500

This is the mass of 2.0769 x 10²⁴ molecules of NaOH.

What is 138 grams?

Miscellaneous

100

This is the mass of one mole of a substance.

What is molar mass?

200

The symbol (aq) stands for ______________.

What is "dissolved in water"?

300

The molar mass of dinitrogen pentoxide.

What is 108 g/mole?

400

The number of atoms in 0.25 moles of Sulfur.

What is 1.51 x 10²³ atoms?

500

This is the number of cats Ms. Danner currently has.

What is 3?