Physics HL
Physics HL
5
Chapters
329
Notes
Theme A - Space, Time & Motion
Theme A - Space, Time & Motion
Theme B - The Particulate Nature Of Matter
Theme B - The Particulate Nature Of Matter
Theme C - Wave Behaviour
Theme C - Wave Behaviour
Theme D - Fields
Theme D - Fields
Theme E - Nuclear & Quantum Physics
Theme E - Nuclear & Quantum Physics
IB Resources
Theme B - The Particulate Nature Of Matter
Physics HL
Physics HL

Theme B - The Particulate Nature Of Matter

Understanding Specific Latent Heat: From Ice To Vapor

Word Count Emoji
626 words
Reading Time Emoji
4 mins read
Updated at Emoji
Last edited on 5th Nov 2024

Table of content

🚀 Fun fact: Imagine you're making some popcorn for movie night. You put the popcorn in the microwave and notice that even though it's popping, the temperature inside doesn't increase. Why? It's because of the concept of latent heat!

Specific latent heat 🔥

  • Definition: It's the energy needed to change 1 kg of a substance from one phase to another without changing its temperature.
  • Formula: L = mQ​ where
  • L = Specific latent heat (J/kg)
  • Q = Energy transferred (J)
  • m = Mass of the substance (kg)

Real World Example: When you leave an ice cube outside on a hot day, it melts even if the temperature around it remains constant. That's because the ice is absorbing energy in the form of specific latent heat.

Measuring specific latent heat 📐

  • Method-of-mixtures
  • Take a known mass of ice at 0°C.
  • Add it to water at a higher temperature.
  • Observe how energy transfers until equilibrium is achieved.

📌 Key Takeaway: The ice takes energy from the water to melt and then to come to the same temperature as the initial water.

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IB Resources
Theme B - The Particulate Nature Of Matter
Physics HL
Physics HL

Theme B - The Particulate Nature Of Matter

Understanding Specific Latent Heat: From Ice To Vapor

Word Count Emoji
626 words
Reading Time Emoji
4 mins read
Updated at Emoji
Last edited on 5th Nov 2024

Table of content

🚀 Fun fact: Imagine you're making some popcorn for movie night. You put the popcorn in the microwave and notice that even though it's popping, the temperature inside doesn't increase. Why? It's because of the concept of latent heat!

Specific latent heat 🔥

  • Definition: It's the energy needed to change 1 kg of a substance from one phase to another without changing its temperature.
  • Formula: L = mQ​ where
  • L = Specific latent heat (J/kg)
  • Q = Energy transferred (J)
  • m = Mass of the substance (kg)

Real World Example: When you leave an ice cube outside on a hot day, it melts even if the temperature around it remains constant. That's because the ice is absorbing energy in the form of specific latent heat.

Measuring specific latent heat 📐

  • Method-of-mixtures
  • Take a known mass of ice at 0°C.
  • Add it to water at a higher temperature.
  • Observe how energy transfers until equilibrium is achieved.

📌 Key Takeaway: The ice takes energy from the water to melt and then to come to the same temperature as the initial water.

Unlock the Full Content! File Is Locked Emoji

Dive deeper and gain exclusive access to premium files of Physics HL. Subscribe now and get closer to that 45 🌟

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