Heat
Heat is energy transferred between objects due to temperature difference, and understanding its properties explains thermal phenomena and ap
Core concept
Specific heat capacity is the amount of heat needed to raise the temperature of 1kg of a substance by 1°C, varying between different materials.
How it works
Latent heat is the heat absorbed or released during a phase change (melting, boiling) without a change in temperature.
Why it matters
Heat transfer occurs through conduction (direct contact), convection (fluid movement), and radiation (electromagnetic waves).
Key detail
Understanding heat properties helps explain everyday phenomena like why metals feel colder than wood, and how thermos flasks retain temperature.
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Quick notes
• Specific heat capacity: heat to raise 1kg by 1°C.
• Varies between different materials.
• Latent heat: heat during phase change.
• No temperature change during this.
• Heat transfer: conduction, convection, radiation.
• Conduction: direct contact.
• Convection: fluid movement. Radiation: waves.
• This explains metal coldness, thermos flasks.