Quantity of Heat
Physics · 50 practice questions
Heat as a form of energy; definition of heat capacity and specific heat capacity of solids and liquids; determination of heat capacity and specific heat capacity by simple methods (method of mixtures, electrical method, Newton's law of cooling).
- Differentiate between heat capacity and specific heat capacity.
- Determine heat capacity and specific heat capacity using simple methods and solve numerical problems.
Try a few questions
- Practice question 1
A calorimeter used in heat capacity experiments is generally
- A.made of a good insulator with a very high heat capacity
- B.made of a material that reacts chemically with the substance being tested
- C.made of a good conductor with a low heat capacity, such as copper, to minimize heat loss
- D.unnecessary for any accurate heat capacity determination
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C. made of a good conductor with a low heat capacity, such as copper, to minimize heat loss
A copper calorimeter with low heat capacity ensures it absorbs minimal heat itself, improving experimental accuracy.
- Practice question 2
Specific heat capacity experiments must account for the heat capacity of the calorimeter and stirrer, unless these are
- A.made entirely from water, identical to the substance being tested
- B.used only at very high, near-boiling temperatures
- C.specifically designed to have a negligible heat capacity
- D.replaced by digital sensors with no physical heat capacity at all
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C. specifically designed to have a negligible heat capacity
Ignoring the calorimeter's own heat absorption is only valid if its heat capacity is deliberately made very small.
- Practice question 3
Heat capacity, unlike specific heat capacity, depends on the
- A.mass of the specific object being considered
- B.material alone, independent of the object's actual mass
- C.temperature scale used, whether Celsius or Kelvin
- D.colour of the object being heated
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A. mass of the specific object being considered
Heat capacity applies to a whole object of a given mass, unlike the per-unit-mass nature of specific heat capacity.
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