Calorimetry
Chemistry ⇒ Thermochemistry and Energetics
Calorimetry starts at 10 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Calorimetry.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 11
Describe one way to minimize heat loss to the surroundings in a calorimetry experiment.
Describe the difference between a bomb calorimeter and a coffee cup calorimeter.
Describe the steps involved in determining the specific heat capacity of a metal using a calorimeter.
Explain why it is important to stir the solution in a calorimeter during an experiment.
A 100 g sample of water is heated from 25°C to 35°C. (Specific heat capacity of water = 4.18 J/g°C) Calculate the amount of heat absorbed by the water.
A 200 g sample of a metal at 80°C is placed in 100 g of water at 20°C. The final temperature is 25°C. (Specific heat of water = 4.18 J/g°C) Calculate the heat gained by the water.
A metal block of mass 50 g at 100°C is placed in 100 g of water at 25°C. The final temperature is 30°C. (Specific heat of metal = 0.4 J/g°C, water = 4.18 J/g°C) Calculate the heat lost by the metal.
A reaction in a calorimeter causes the temperature of 150 g of solution to drop by 3°C. (Specific heat = 4.18 J/g°C) Calculate the heat change for the solution.
Which of the following best defines calorimetry? (1) The study of heat changes in chemical reactions (2) The measurement of temperature only (3) The study of pressure changes (4) The measurement of mass changes
Which of the following equations is used to calculate the heat change in a substance? (1) Q = mcΔT (2) Q = m/v (3) Q = P × V (4) Q = nRT
Which of the following factors does NOT affect the accuracy of calorimetry experiments? (1) Heat loss to surroundings (2) Incomplete reaction (3) Accurate temperature measurement (4) Color of the calorimeter
Which of the following is a correct assumption when using a coffee cup calorimeter? (1) The system is perfectly insulated (2) The pressure is constant (3) The volume is constant (4) The reaction is endothermic
Fill in the blank: In a bomb calorimeter, the reaction occurs at constant __________.
Fill in the blank: The heat capacity of a substance is the amount of heat required to raise the temperature of __________ of the substance by 1°C.
Fill in the blank: The total heat change in a calorimeter is the sum of the heat absorbed by the __________ and the heat absorbed by the calorimeter itself.
The amount of heat required to raise the temperature of 1 gram of a substance by 1°C is called its __________.
True or False: In an exothermic reaction, the temperature of the surroundings increases.
True or False: The enthalpy change measured in a coffee cup calorimeter is the same as the internal energy change for the reaction.
True or False: The heat capacity of a calorimeter must be considered when calculating the heat change in a reaction.
True or False: The heat gained by the calorimeter is always equal to the heat lost by the reaction.
