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Questions and Answers
If a metal has a specific heat capacity of 500 J/kg°C, what does this indicate?
If a metal has a specific heat capacity of 500 J/kg°C, what does this indicate?
- It releases 500 Joules of energy when 1 kg of the metal cools by 1°C.
- It requires 500 Joules of energy to melt 1 kg of the metal.
- It requires 500 Joules of energy to raise the temperature of 1 kg of the metal by 1°C. (correct)
- It requires 500 Joules of energy to change the state of 1 kg of the metal.
Which formula correctly relates energy transferred (Q), mass (m), specific heat capacity (c), and temperature change (ΔT)?
Which formula correctly relates energy transferred (Q), mass (m), specific heat capacity (c), and temperature change (ΔT)?
- Q = mcΔT (correct)
- Q = mΔT / c
- Q = mc / ΔT
- Q = m / (cΔT)
If you double the mass of a substance while keeping the specific heat capacity and temperature change constant, how does the energy transferred change?
If you double the mass of a substance while keeping the specific heat capacity and temperature change constant, how does the energy transferred change?
- It is halved.
- It quadruples.
- It remains the same.
- It doubles. (correct)
You have equal masses of aluminum and copper, both at the same initial temperature. If the same amount of energy is added to each, which metal will experience a greater temperature increase? (Specific heat capacity of aluminum: 910 J/kg°C, copper: 390 J/kg°C)
You have equal masses of aluminum and copper, both at the same initial temperature. If the same amount of energy is added to each, which metal will experience a greater temperature increase? (Specific heat capacity of aluminum: 910 J/kg°C, copper: 390 J/kg°C)
Which of the following requires the least amount of energy to raise its temperature by 1°C, assuming all samples have a mass of 1 kg? (Specific heat capacities: brass: 380 J/kg°C, copper: 390 J/kg°C, iron: 460 J/kg°C, aluminum: 910 J/kg°C)
Which of the following requires the least amount of energy to raise its temperature by 1°C, assuming all samples have a mass of 1 kg? (Specific heat capacities: brass: 380 J/kg°C, copper: 390 J/kg°C, iron: 460 J/kg°C, aluminum: 910 J/kg°C)
If 1000 J of energy is added to 1 kg of copper and 1 kg of iron, which will have the higher final temperature, assuming they both start at the same temperature? (Specific heat capacity of copper: 390 J/kg°C, iron: 460 J/kg°C)
If 1000 J of energy is added to 1 kg of copper and 1 kg of iron, which will have the higher final temperature, assuming they both start at the same temperature? (Specific heat capacity of copper: 390 J/kg°C, iron: 460 J/kg°C)
To heat 2 kg of water from 20°C to 50°C, you need a certain amount of energy. If you instead have 4 kg of water and heat it from 20°C to 50°C, how will the energy required change?
To heat 2 kg of water from 20°C to 50°C, you need a certain amount of energy. If you instead have 4 kg of water and heat it from 20°C to 50°C, how will the energy required change?
Calculate the energy transferred when 2 kg of copper is heated from 25°C to 75°C. (Specific heat capacity of copper: 390 J/kg°C)
Calculate the energy transferred when 2 kg of copper is heated from 25°C to 75°C. (Specific heat capacity of copper: 390 J/kg°C)
If the same amount of energy is applied to 1 kg of aluminum and 1 kg of iron, which will experience a greater temperature change? (Specific heat capacities: aluminum: 910 J/kg°C, iron: 460 J/kg°C)
If the same amount of energy is applied to 1 kg of aluminum and 1 kg of iron, which will experience a greater temperature change? (Specific heat capacities: aluminum: 910 J/kg°C, iron: 460 J/kg°C)
How much energy is required to raise the temperature of 5 kg of iron by 10°C? (Specific heat capacity of iron: 460 J/kg°C)
How much energy is required to raise the temperature of 5 kg of iron by 10°C? (Specific heat capacity of iron: 460 J/kg°C)
What is the specific heat capacity of a 2 kg material if it requires 4000 J of energy to raise its temperature by 5°C?
What is the specific heat capacity of a 2 kg material if it requires 4000 J of energy to raise its temperature by 5°C?
If the temperature of a 3 kg sample of brass increases by 8°C after the addition of 9120 J of energy, what is the specific heat capacity of brass?
If the temperature of a 3 kg sample of brass increases by 8°C after the addition of 9120 J of energy, what is the specific heat capacity of brass?
A 5 kg piece of metal requires 11,500 J of heat to raise its temperature from 20°C to 25°C. What is the specific heat capacity of the metal?
A 5 kg piece of metal requires 11,500 J of heat to raise its temperature from 20°C to 25°C. What is the specific heat capacity of the metal?
If 5000 J of energy are applied to 2 kg of a substance, and its temperature rises by 10°C, what is the substance's specific heat capacity?
If 5000 J of energy are applied to 2 kg of a substance, and its temperature rises by 10°C, what is the substance's specific heat capacity?
You have 1 kg each of aluminum, brass, copper and iron. If you supply 500 J of energy to each, which will have the largest temperature increase? (Specific heat capacities: aluminum: 910, brass: 380, copper: 390, iron: 460, all in J/kg°C)
You have 1 kg each of aluminum, brass, copper and iron. If you supply 500 J of energy to each, which will have the largest temperature increase? (Specific heat capacities: aluminum: 910, brass: 380, copper: 390, iron: 460, all in J/kg°C)
How much energy is required to heat 3 kg of water from 20°C to 80°C, given that the specific heat capacity of water is 4200 J/kg°C?
How much energy is required to heat 3 kg of water from 20°C to 80°C, given that the specific heat capacity of water is 4200 J/kg°C?
If you want to heat 1 kg of copper from 20°C to 50°C, how would the amount of energy required change if you instead heated 2 kg of copper from 20°C to 35°C? (Specific heat capacity of copper = 390 J/kg°C)
If you want to heat 1 kg of copper from 20°C to 50°C, how would the amount of energy required change if you instead heated 2 kg of copper from 20°C to 35°C? (Specific heat capacity of copper = 390 J/kg°C)
You have two blocks of iron; Block A with a mass of 1 kg and Block B with a mass of 3 kg. If both blocks initially have the same temperature and the same amount of energy is added to each block, which block will have the larger final temperature?
You have two blocks of iron; Block A with a mass of 1 kg and Block B with a mass of 3 kg. If both blocks initially have the same temperature and the same amount of energy is added to each block, which block will have the larger final temperature?
A metal has a specific heat capacity of 450 J/kg°C. If 2250 J of energy is applied to a 3 kg sample of this metal, by how much will its temperature rise?
A metal has a specific heat capacity of 450 J/kg°C. If 2250 J of energy is applied to a 3 kg sample of this metal, by how much will its temperature rise?
Brass has a specific heat capacity of 380 J/kg°C. Find the amount of energy in Joules that needs to be transfered into 5 kg of Brass in order to raise its temperature 2°C
Brass has a specific heat capacity of 380 J/kg°C. Find the amount of energy in Joules that needs to be transfered into 5 kg of Brass in order to raise its temperature 2°C
Flashcards
What is heat?
What is heat?
The energy transferred due to a temperature difference.
What is temperature?
What is temperature?
A measure of the average kinetic energy of the particles in a substance.
What is Specific Heat Capacity?
What is Specific Heat Capacity?
The amount of heat energy required to raise the temperature of 1 kg of a substance by 1°C.
Formula for specific heat capacity
Formula for specific heat capacity
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Meaning of specific heat capacity of copper being 390 J/Kg °C
Meaning of specific heat capacity of copper being 390 J/Kg °C
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Energy to heat 3kg of copper from 20°C to 220°C
Energy to heat 3kg of copper from 20°C to 220°C
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Energy to heat 2kg of water from 10°C to 90°C
Energy to heat 2kg of water from 10°C to 90°C
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Energy to heat 1 kg of iron by 1°C
Energy to heat 1 kg of iron by 1°C
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Metal needing the most energy to raise temperature by 1°C
Metal needing the most energy to raise temperature by 1°C
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Metal with largest temperature rise for a given amount of energy
Metal with largest temperature rise for a given amount of energy
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Energy to heat 2 kg of iron by 5°C
Energy to heat 2 kg of iron by 5°C
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Study Notes
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The task is to understand and apply the concept of specific heat capacity
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One must define heat, temperature, and specific heat capacity
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The formula for specific heat capacity, needs to be shown including all the units
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Copper's specific heat capacity is 390 J/kg°C
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The energy transferred when 3kg of copper is heated from 20°C to 220°C needs to be calculated
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Also calculate the energy needed to heat 2kg of water from 10°C to 90°C, water's specific heat capacity is 4200 J/kg°C
Specific Heat Capacity Values for Metals
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Aluminium: 910 J/kg °C
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Brass: 380 J/kg °C
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Copper: 390 J/kg °C
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Iron: 460 J/kg °C
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Calculate the energy that must be transferred to 1 kg of copper to raise its temperature by 1 °C
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With 1 kg of each metal, determine which requires the most energy to raise its temperature by 1 °C
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When the same amount of energy is transferred into 1 kg of each metal, determine which has the largest temperature rise
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Calculate the energy that must be transferred into 2 kg of iron to raise its temperature by 5°C
Table Completion
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Complete the table by calculating the missing values using the formula for specific heat capacity
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The table includes values for:
- Material
- Energy transfer (J)
- Mass (kg)
- Temperature rise (°C)
- Specific heat capacity (J/kg°C)
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Row A: Mass, temperature rise, and specific heat capacity are given. The energy transfer needs to be calculated.
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Row B: Energy transfer, mass, and specific heat capacity are given. The temperature rise needs to be calculated.
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Row C: Energy transfer, temperature rise, and specific heat capacity are given. The mass needs to be calculated.
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Row D: Mass, temperature rise, and specific heat capacity are given. The energy transfer needs to be calculated.
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Row E: Energy transfer, mass, and temperature rise are given. The specific heat capacity needs to be calculated.
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