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Learn: Density and Specific Heat Capacity
OCR GCSE Physics J249
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Welcome!Today we'll explore density and specific heat capacity. These are key concepts that help us understand how materials behave. Let's dive in!
What is Density?Density is how much mass is packed into a certain volume of a material. It is calculated using the formula: Density = Mass ÷ Volume. Materials with higher density feel heavier for the same size.
Quick check: Which formula represents density?
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What is Specific Heat Capacity?Specific heat capacity is the amount of energy needed to raise the temperature of 1 kilogram of a material by 1°C. Materials with a high specific heat capacity require more energy to heat up.
The formula for specific heat capacity is {{blank0}} = m × c × ΔT.
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Why Does Specific Heat Capacity Matter?Specific heat capacity explains why materials like water take longer to heat up than metals. It helps in designing heating systems and understanding climate effects, such as oceans regulating temperature.
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Review Time!Great work! You've learned about density and specific heat capacity. Let's test your understanding with a few questions.
Which of the following are true about density? (Select all that apply)
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Match the items on the left with their correct pairs on the right
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The {{blank0}} of water is higher than most metals, which is why it heats up more slowly.
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Which term describes the energy required to heat 1 kg of a material by 1°C?
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