C.5 Review

Classmates

100

This classmate plays beach volleyball

What is Merrick?

200

This classmate has a cool watch

Who is Harlan

300

How many people are in period 2 Miss Cassidy?

what is 36 students

500

What colleges did Miss Cassidy go to?

Vassar and UC Berkeley

Unit Conversion

100

Given 450mg of salt, how many grams do you have?

(1000mg=1g)

0.45 grams

200

You have 24 grams of carbon. How many moles of carbon do you have?

2 moles

300

You have 2 Liters of a 3 M(3 Molar) acid solution. How many moles of acid are in the bottle?

6 moles

400

There is 0.5 moles of pure gold (Au), how many atoms is inside the gold?

(Use Avogadro's Number: 6.022x10^23)

3.011x10^23 atoms

500

You have a 10mL cube of metal. The metal has a density of 5g/mL and a molar mass of 10g/mol. How many moles are in the cube?

*find total weight then convert into moles

5 moles

Chemical Bond Energies

100

When a chemical bond is formed, energy is always released, making it this type of reaction.

Exothermic

200

True or False: Breaking a chemical bond releases energy into the environment.

False

300

Between a single bond, a double bond, and a triple bond, this one is the strongest and requires the most energy to break.

Triple Bond

400

This is the most common unit of measurement used to quantify bond energy, representing the amount of energy in thousands of Joules per mole

kj/mol

500

To find the total energy change in a reaction, you take the energy used to break bonds and subtract the energy released when these are created

Products

Combustion and Engines

100

What type of engine uses a spark plug?

gasoline engine

200

Diesel engines use compression and a spark plug.

True or False?

False

(Diesel engines use only compression)

300

What is the name of the gas that engines need to function?

(humans need this as well)

Oxygen

400

What is the combustion reaction formula?

2C₈H₁₈+25O₂ ---> 16CO₂+18H₂O

500

How many kj/mol does coal release?

300-400 kj/mol

Combined Gas Law

100

What does the "T" variable represent in the combined gas law formula?

temperature

200

As temperature increases, what also increases?

pressure

300

What is the combined gas law formula?

P₁V₁/T₁ = P₂V₂/T₂

400

To properly solve any problem using the Combined Gas Law, this specific variable must always be converted from Celsius to Kelvin.

What is temperature?

500

The Combined Gas Law is derived by looking at the behavior of these three specific physical properties of a gas.

What are pressure, volume, and temperature?