Heat

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What is heat?

Back

Heat is a form of energy that is transferred between systems or objects with different temperatures (thermal energy transfer).

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What is the melting point?

Back

The melting point is the temperature at which a solid becomes a liquid at a given pressure.

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What is an endothermic process?

Back

An endothermic process is a reaction or change that absorbs heat from its surroundings.

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What is an exothermic process?

Back

An exothermic process is a reaction or change that releases heat to its surroundings.

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What is specific heat capacity?

Back

Specific heat capacity is the amount of heat required to raise the temperature of 1 gram of a substance by 1 degree Celsius.

Front

What is the formula to calculate heat energy?

Back

The formula is Q = mcΔT, where Q is heat energy, m is mass, c is specific heat capacity, and ΔT is the change in temperature.

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What is the heat of fusion?

Back

The heat of fusion is the amount of heat required to convert a unit mass of a solid into a liquid at its melting point.

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What is the heat of vaporization?

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The heat of vaporization is the amount of heat required to convert a unit mass of a liquid into a gas at its boiling point.

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How does temperature affect kinetic energy?

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As temperature increases, the kinetic energy of the particles in a substance also increases.

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What happens to water at 0°C?

Back

At 0°C, water can exist as both a solid (ice) and a liquid, which is its melting point.