Chemistry Review

Electrochemistry

100

What is oxidation?

Oxidation is the loss of electrons from a given substance (atoms, ions, etc.).

200

What is reduction?

Reduction is when any given substance (atoms, ions, etc.) gains electrons.

300

What is a key component that an electrolytic cell has that voltaic (galvanic) cells do not have?

Electrolytic cells have batteries (or an alternative power source) while voltaic cells do not.

400

What direction do electrons flow in electrochemical cells?

They flow from the anode to the cathode.

500

What is the purpose of the salt bridge in voltaic (galvanic) cells?

The salt bridge allows ions to flow, maintaining electrical neutrality for the whole voltaic cell.

Electrons and Orbitals

100

What is the charge of an electron?

Negative charge.

200

What are valence electrons?

They are the electrons located on the outermost orbital of an element.

300

What is chlorine's electron configuration in the ground state?

It is 2, 8, 7.

400

What are the 4 types of orbitals?

The s, p, d, and f orbitals.

500

How many electrons can each orbital hold?

s = 2

p = 6

d = 10

f = 14

Chemical Equations and Reactions

100

What kind of change is boiling?

Physical change.

200

Given the equation:

2H₂ + O₂ → 2H₂O

What type of reaction is this?

Synthesis reaction.

300

Given the equation:

NaCl + HF → HCl + NaF

What type of reaction is this?

Double Displacement/Replacement reaction.

400

Given the equation:

2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O

What type of reaction is this?

Combustion reaction.

500

Given the reactants NiCl₂ and Ag, will the two be able to react?

No, they will not react.

Solubility

100

Can an insoluble compound dissolve in water?

No.

200

Does ammonia (NH₃) dissolve in water?

Yes, ammonia dissolves in water.

300

At 90°C, how many grams of NaCl does it take to saturate 100g of H₂O?

40 grams.

400

What will happen to the solubility of NaCl (s) if the pressure of the container is increased?

Nothing will occur.

500

What happens to the vapor pressure when the temperature is increased from 20°C to 40°C?

Vapor pressure increases.

Organic Chemistry

100

Is glucose (C₆H₁₂O₆) an organic compound?

Yes.

200

What is the molecular formula of butane?

C₄H₁₀

300

What is the molecular formula of 3-hexene?

C₆H₁₂

400

What is the condensed formula of Heptane?

CH₃CH₂CH₂CH₂CH₂CH₂CH₃

500

Given the equation:

CH₃COOH + HOCH₂CH₂CH₃ → H₃CCOOCH₂CH₂CH₃ + H₂O

What type of organic reaction is this?

Esterification.