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CP Chem B Questions & Answers
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CP Chem B Questions & Answers Give some examples of a substance absorbing heat in terms of phase changes. Melting and Boiling are examples of phase changes where the substance is absorbing heat Give some examples of a substance giving off heat in terms of phase changes. Freezing and conde...

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  • 31 de diciembre de 2024
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  • 2024/2025
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  • cp chem b questions answers
  • give some examples of a substance giving off heat
  • what happens when you increase the temperature of

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CP Chem B Questions & Answers
Give some examples of a substance absorbing heat in terms of phase changes. -
answer Melting and Boiling are examples of phase changes where the substance is
absorbing heat

Give some examples of a substance giving off heat in terms of phase changes. -
answer Freezing and condensation would be examples of phase changes where the
substance is giving off heat.

What happens when you increase the temperature of a substance at the molecular
level? - answer The molecules begin moving faster due to this increased motion they
move apart from each other.

Describe some characteristics that a material with a high specific heat capacity would
have? - answer A material with a high specific heat would take a long time and a lot
of energy to heat up when compared to a material with a low specific heat. A material
with a high specific heat would also retain its heat far longer.

If it takes 200 J to raise the temperature of a 20-gram block of ice by 10°C, what is the
specific heat capacity of the ice? - answer 1 J/(g°C

If the heat capacity of gold is 0.13 J/(g°C), how much heat does it take to raise the
temperature of a one-gram piece of gold from 75°C to 153°C? - answer 10.14 J

If the heat capacity of aluminum is 0.90 J/(g°C), how much heat is needed to raise the
temperature of a 15-gram piece by 29°C? - answer 391.5 J

What is the temperature change if you cool water from 343°C to 55°C? - answer 288
degrees Celsius

What is the temperature change if you heat water from 23°C to 100°C? - answer 73
degrees Celsius

If the heat capacity of aluminum is 0.90 J/(g°C), how much heat is needed to raise the
temperature of a 17-gram piece of aluminum from 32°C to 60°C? - answer 428.4 J

Given the above heat capacities and that each sample had the same mass, which of the
materials would cool the slowest? - answer Potassium, because it has the highest
specific heat and retains heat the longest.

Given the above heat capacities and that each sample had the same mass, which of the
above materials would cool the fastest? - answer The one with the lowest specific

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