AP Chemistry-Unit 3 Review #2

Front

What type of solid will not conduct electricity until it is liquid or aqueous?

Back

Ionic Solid: Ionic solids consist of ions held together by ionic bonds. They do not conduct electricity in solid form but can conduct when melted or dissolved in water.

Front

Which of the following is most likely to be soluble in water? NaF, C12H22O, Mn, Cl2

Back

NaF: Sodium fluoride is an ionic compound and is highly soluble in water due to its ionic nature.

Front

What is the pressure in a vessel containing 2.34 g of CO2, 1.73 g of SO2, and 3.33 g of Ar at 42ºC in a 12.2 L vessel?

Back

263 mmHg: Use the ideal gas law (PV=nRT) to calculate the pressure.

Front

In paper chromatography, if water is the mobile phase, what kind of substance will move up the farthest?

Back

Polar substance: Polar substances interact more strongly with the polar mobile phase (water) and will travel further.

Front

List the 4 Intermolecular forces from weakest to strongest.

Back

London dispersion, dipole-dipole, hydrogen bonding, ion-dipole: These forces vary in strength, with London dispersion being the weakest and ion-dipole being the strongest.

Front

Define ionic solid.

Back

Ionic Solid: A solid composed of ions held together by electrostatic forces (ionic bonds), typically formed between metals and nonmetals.

Front

What is solubility?

Back

Solubility: The ability of a substance to dissolve in a solvent, often expressed in terms of concentration.

Front

Explain the concept of intermolecular forces.

Back

Intermolecular Forces: Forces of attraction or repulsion between neighboring particles (atoms, molecules, or ions) that influence physical properties.

Front

What is the ideal gas law?

Back

Ideal Gas Law: A fundamental equation (PV=nRT) that relates the pressure (P), volume (V), number of moles (n), gas constant (R), and temperature (T) of an ideal gas.

Front

Define paper chromatography.

Back

Paper Chromatography: A technique used to separate and analyze mixtures of substances based on their different rates of movement across a stationary phase.