#1
What is the process of converting a gas into a liquid called?
Evaporation
Condensation
Sublimation
Deposition
#2
What is the role of a catalyst in a chemical reaction?
To increase the reaction rate
To decrease the reaction rate
To change the equilibrium constant
To change the stoichiometry of the reaction
#3
Which type of solution has the maximum amount of solute that can dissolve at a given temperature?
Unsaturated solution
Saturated solution
Supersaturated solution
Dilute solution
#4
Which factor influences the rate of dissolution of a solute in a solvent?
Solute particle size
Pressure
Temperature
Density of the solvent
#5
What is the common solvent in most solutions?
Ethanol
Water
Acetone
Hexane
#6
Which term describes a solution with a high concentration of solute relative to solvent?
Dilute solution
Concentrated solution
Saturated solution
Supersaturated solution
#7
Which type of solution can conduct electricity?
Non-electrolyte solution
Ionic solution
Covalent solution
Saturated solution
#8
What is the molality of a solution?
The amount of solute in moles per liter of solution
The ratio of moles of solute to the mass of the solvent in kg
The ratio of mass of solute to the volume of the solution in liters
The concentration of solute in grams per liter of solution
#9
In a supersaturated solution, what happens if a seed crystal is added?
No change occurs
Solute precipitates out
Solution becomes more concentrated
Temperature decreases
#10
Which law is applicable to the relationship between the concentration of a gas in a solution and the partial pressure of that gas above the solution?
Avogadro's Law
Dalton's Law
Henry's Law
Boyle's Law
#11
What is the Tyndall effect related to in solutions?
Conductivity
Scattering of light
Density
Chemical reactivity
#12
Which factor does NOT affect the solubility of a solute in a solvent?
Temperature
Pressure
Particle size
Color of solute
#13
Which of the following is a colligative property of a solution?
Boiling point elevation
Color of the solute
Density
Vapor pressure of the solvent
#14
What is azeotrope in the context of solutions?
A mixture with a constant boiling point composition
A solution with variable concentration
A gas-liquid equilibrium state
A colloidal suspension
#15
What is the freezing point depression of a solution?
The increase in freezing point due to solute presence
The decrease in freezing point due to solute presence
The boiling point elevation caused by solute
The change in density of the solution upon freezing