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Quiz

Week 7 - Phase Change Capability

Usuário eliminado 8 perguntas Atualizado em 3 fev 2020

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Perguntas do quiz (8)

  1. 1[blank_start]Specific[blank_end] [blank_start]heat[blank_end] is similar to heat capacitance, but is a specific number. The specific heat tells you how much energy one must put in per unit mass in order to raise the temperature 1 C.

    Answer is two words.
    1. ASpecific
    2. Bheat
  2. 2Which of the following processes indicate energy being released to the environment?
    1. Asolid to gas
    2. Bsolid to liquid
    3. Cliquid to solid
    4. Dgas to solid
    5. Eliquid to gas
    6. Fgas to liquid
  3. 3John wishes to heat a cup of water to make some ramen for lunch. His insulated cup holds 200 g of water at 20 C. He has an immersion heater rated at 1000 W (1000 J/s) to heat the water.
    How many joules of heat are required to heat the water to 100 C?

    Answer to 2 SF.

    E = [blank_start]67,000[blank_end] Joules
    1. A67,000
  4. 4During a phase change, [blank_start]energy[blank_end] may be added or removed from a system but the [blank_start]temperature[blank_end] will not change.
    1. Aenergy
    2. Btemperature
  5. 5Which of the following could be defined as the latent heat of fusion:
    1. AThe energy required to transition one unit of a substance from solid to liquid
    2. BThe energy liberated when one unit of a substance transitions from liquid to solid
    3. CThe energy required to transition one unit of a substance from liquid to vapor
    4. DThe energy liberated when one unit of a substance transitions from vapor to liquid
  6. 6The process of changing phase on a phase change, (T vs E) diagram is represented by:
    1. AA horizontal line
    2. BA vertical line
    3. CA positive sloping line
    4. Dnegative sloping line
  7. 7Water is rare in that when it cools down, the structure of the molecules:
    1. ASpread out
    2. BMove faster
    3. CSlow down
    4. DExpand
  8. 8Which of the following would be considered 'phases'?
    1. ASolid
    2. BLiquid
    3. CGas
    4. DSublimation
    5. EMelting
    6. FFreezing
    7. GCondensation

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Descrição
O usuário eliminou as informações de disciplina Quiz sobre Week 7 - Phase Change Capability, criado por Usuário eliminado em 28-01-2020.
Autor
Usuário eliminado
Idioma
English
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12
Histórico
Criado em 28 jan 2020 · atualizado em 3 fev 2020
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