CH-104 Final Review

Exam 1

1

This term refers to a property of matter that depends on the amount of substance present, such as mass or volume. (30 seconds)

What is an extensive property?

2

This ion of magnesium has 12 protons, 12 neutrons, and 10 electrons. (45 seconds).

What is ²⁴₁₂Mg²⁺?

3

Among C₂H₄, C₆H₆, CH₄O, and C₂H₆, this one is an empirical formula. (60 seconds)

What is CH₄O?

4

This is the shape of an orbital that has these set of quantum numbers: n=3, l=0, m_l=0, m_s=-1/2. (60 seconds)

What is an s-orbital?

5

This is the full electron configuration for an aluminum atom. (60 seconds)

What is 1s² 2s² 2p⁶ 3s² 3p¹ ?

Exam 2

1

This is the order from smallest to largest ionic radius of these ions: S²⁻, Cl⁻, K⁺, Ca²⁺ (45 seconds)

What is Ca²⁺ K⁺ Cl⁻ S²⁻ ?

2

This is the IUPAC name for the following compound:

Cu(NO3)_2. (45 seconds)

What is copper (II) nitrate?

3

The polyatomic ion CO₃^2- has this many resonance structures. (90 seconds)

What is 3?

4

H₂O has this electron geometry and molecular geometry. (90 seconds)

What is tetrahedral and bent?

5

CO2 has this hybridization around the carbon atom. (90 seconds)

What is sp?

Exam 3

1

This is the mass percent composition of H in H₂O? (60 seconds)

What is 11.2%

2

When a strong acid reacts with a strong base, these are the products formed. (30 seconds)

What are water and a salt.

3

When 3.00 moles of HCl react with excess Ca(OH)₂, this many moles of CaCl₂ are produced. (90 seconds)

what is 1.50 mole CaCl₂? 

4

The concentration of a solution prepared by dissolving 0.50 moles of glucose (C₆H₁₂O₆) in 500 mL of water is this. (90 seconds)

What is 1.00 M?

5

To balance the reaction C₂H₄+O₂−>CO₂+H₂O, the ratio of C₂H₄:O₂:CO₂:H₂O must be this. (90 seconds)

What is 1:3:2:2?

Exam 4

1

The standard enthalpy of formation ΔHf^∘ of H₂(g) is this value. (30 seconds)

What is 0 kJ/mol? 

2

This law states that the total pressure of a gas mixture is the sum of the partial pressures of each individual gas. (30 seconds)

What is Dalton's Law of Partial Pressures?

3

The amount of heat required to raise the temperature of 1 gram of a substance by 1^∘C is known as this. (30 seconds)

What is specific heat capacity?

4

When a 25.0 g sample of water cools from 80.0^∘C to 20.0^∘C, the process is classified as this. (45 seconds)

What is exothermic?

5

A 50.0 g piece of metal at 150.0^∘C is placed in 100.0 g of water at 25.0^∘C. The final temperature of the system is 30.0^∘C. Assuming no heat is lost to the surroundings and the specific heat capacity of water is 4.184 J/g°C, calculate the specific heat capacity of the metal. (180 seconds)

What is 0.385 J/g°C?

IMF

1

This type of intermolecular force is present in all molecules, regardless of polarity. (30 seconds)

What are London dispersion forces?

2

This type of intermolecular force occurs between polar molecules that do not involve hydrogen bonding. (30 seconds)

What are dipole-dipole forces?

3

This is the strongest type of intermolecular force that occurs between a molecule with a hydrogen atom bonded to N, O, or F. (30 seconds)

What is hydrogen bonding?

4

This is the order of increasing boiling point of the following compound: N2, HCl, NH3. (45 seconds)

What is N2 < HCl < NH3?

5

This is the reason why CH₃CH₂OH has a higher boiling point than CH₃OCH₃, even though both molecules have similar molar masses. (90 seconds)

What is because CH₃CH₂OH can form hydrogen bonds due to the presence of an −OH group, while CH3OCH3 can only experience dipole-dipole interactions?