The solubilities of four different substances in water and ethanol are given.

Some mixtures can be separated by solvation and filtration using water or ethanol as solvents.

• Method I uses water as the solvent.

• Method II uses ethanol as the solvent.

Which substances can be separated from each other using both methods?

A mixture of ethanol and methanol can be separated by fractional distillation. This method of separation depends on the difference of which property of the two alcohols?

Which descriptions are consistent with the diagram?

Identify the equation that represents sublimation.

Identify the pair of substances that can form a homogeneous mixture.

An ice cube of mass 10.0 g with a temperature of 0°C is placed into a glass containing 90 cm³ of water at 10°C. After 5 minutes some of the ice has melted. What is the temperature of the ice remaining?

A substance is heated at a constant rate.
During which interval does the energy of the substance increase the most?

Identify the change(s) that occur at the boiling point when a liquid is converted to a gas.
I. kinetic energy of the particles increases
II. separation between the particles increases

The temperature of a gas is reduced. Which of the following statements is true?

Which statements are correct?
I. Solids have a fixed shape because the particles can only vibrate about a fixed point.
II. Liquids can flow because the particles can move freely.
III. Gases are less dense because the interactions between the particles are very weak.