Unit 4: Chemical Reactions & Stoichiometry

Types of Chemical Reactions

100

Name any 3 of the 5 types of chemical reactions we learned.

Synthesis, Decomposition, Single Replacement, Double Replacement, Combustion

200

What type of chemical reaction is this?

AX + B -> BX + A

Single Replacement

300

                            DAILY DOUBLE

For a chemical reaction to be considered combustion, four pieces are needed. The first item needed is a hydrocarbon, or a compound with just Hydrogen and Carbon. What are the other three pieces?

Oxygen, Carbon Dioxide, Water

400

What type of chemical reaction is this?

FeS + HCl -> H₂S + FeCl

Double Replacement

500

What type of chemical reaction is this?

C₆H₁₂O₆ + O₂ -> H₂O + CO₂

Single Replacement

Balancing

100

Is this reaction balanced?

H₂O₂ -> H₂ + O₂

Yes

200

Is this reaction balanced?

HCl + NaOH -> NaCl + H₂O

Yes

300

The Law of Conservation of Mass says that the amount of atoms before the reaction needs to be the ____ amount of atoms after the reaction.

Same

400

Balance the following equation by adding the correct coefficients.

__ KBr + __ CaF₂ -> __ CaBr₂ + __ KF

2, 1, 1, 2

500

Balance the following equation

__ C₄H₈ + __ O₂ -> __ CO₂ + __ H₂O

1, 6, 4, 4

Molar Mass

100

We find the molar mass by extracting the atomic ___ from the periodic table.

Mass

200

What is the molar mass of Beryllium (Be), with correct units?

9.01 g/mol

300

Find the molar mass of H₂O with correct units.

18 g/mol

400

Find the molar mass of CaCl₂ with correct units. 

~111 g/mol

500

Find the molar mass of (NH₄)₂S with correct units. 

~70 g/mol

Stoich I

100

If I'm given grams and I need to convert to moles, am I dividing or multiplying?

Dividing

200

How many moles are in one Molar Mass of a substance?

1 mole for every Molar Mass

300

How many moles is 64g of O₂?

(Find the Molar Mass first)

2 moles

400

How many grams are in 2.5 moles of Ni?

~146.7 g Ni

500

How many particles are in 10g of H₂O?

3.34 x 10²³ particles H₂O

Stoich II

100

If I'm given particles and I need to convert to moles, am I dividing or multiplying?

Dividing

200

How many particles are in one mole?

6.02 x 10²³ particles

300

How many moles is 12.04 x 10²⁴ particles of HCl?

2 moles

400

How many particles are in 3 moles of K?

18.06 x 10²³ particles K

500

How many grams are in 3.01 x 10²³ particles of F₂?

~19 g F₂