Table of Contents
- 1 What can affect specific heat?
- 2 What is the specific heat of metals?
- 3 How does specific heat affect final temperature?
- 4 Do metals have low specific heat?
- 5 Do metals have a high specific heat?
- 6 How does specific heat affect climate?
- 7 How does specific heat of metal compare to that of water?
- 8 What are the specific heats of aluminum and lead?
What can affect specific heat?
This quantity is known as the specific heat capacity (or simply, the specific heat), which is the heat capacity per unit mass of a material. Experiments show that the transferred heat depends on three factors: (1) The change in temperature, (2) the mass of the system, and (3) the substance and phase of the substance.
What causes metals to have different specific heats?
The temperature of the water changes by different amounts for each of the two metals. Each different type of metal causes the temperature of the water to increase to a different final temperature. This indicates that each metal has a different ability to absorb heat energy and to transfer heat energy.
What is the specific heat of metals?
Specific heats and molar heat capacities for various substances at 20 C
| Substance | c in J/gm K | c in cal/gm K or Btu/lb F |
|---|---|---|
| Copper | 0.386 | 0.0923 |
| Brass | 0.380 | 0.092 |
| Gold | 0.126 | 0.0301 |
| Lead | 0.128 | 0.0305 |
Does specific heat change with temperature?
In general, the specific heat also depends on the temperature. Table 1 lists representative values of specific heat for various substances. Except for gases, the temperature and volume dependence of the specific heat of most substances is weak.
How does specific heat affect final temperature?
The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius. The relationship does not apply if a phase change is encountered, because the heat added or removed during a phase change does not change the temperature.
How do you find the specific heat of a metal?
The specific heat capacity is the heat or energy required to change one unit mass of a substance of a constant volume by 1 °C. The formula is Cv = Q / (ΔT ⨉ m) .
Do metals have low specific heat?
It is the amount of energy (in joules) needed to raise the temperature of 1 gram of the substance by 1 °C. Specific heat is a property that is specific to a given type of matter, and substances vary in their specific heat. Metals tend to have low specific heat. Water has very high specific heat.
Do different masses for the same type of metal affect its specific heat value?
Explanation: Specific heat is defined as amount of heat per unit mass of substance that is needed in order to increase the temperature of the substance by one degree celsius. Mass of the substance has no effect on specific heat, as it is already a quantity expressed per unit mass.
Do metals have a high specific heat?
It is the amount of energy (in joules) needed to raise the temperature of 1 gram of the substance by 1 °C. Specific heat is a property that is specific to a given type of matter, and substances vary in their specific heat. Metals tend to have low specific heat.
Which factors affect heat transfer between a warm and a cool substance?
Which factors affect heat transfer between a warm and a cool substance? chemical composition of the substances. state of matter of the substances at room temperature. thermal equilibrium of the substances.
How does specific heat affect climate?
“The high specific heat of water affects Earth’s climate because it makes the temperatures of the oceans relatively resistant to change.”
Which expression defines specific heat?
Specific heat is the amount of heat required to raise one gram of any substance one degree Celsius or Kelvin. The formula for specific heat is the amount of heat absorbed or released = mass x specific heat x change in temperature.
How does specific heat of metal compare to that of water?
So, the conclusion could be made that the specific heat of metal is lower than the specific heat of water. It requires less heat per unit mass to create a greater change in temperature for metal than it does for water. This is general of course, since there are different types of metal. If we use an example though, you’d find that:
What makes a metal have a different heat capacity?
Each different type of metal causes the temperature of the water to increase to a different final temperature. This indicates that each metal has a different ability to absorb heat energy and to transfer heat energy. The ability of a substance to contain or absorb heat energy is called its heat capacity.
What are the specific heats of aluminum and lead?
Two different metals, aluminum and lead, of equal mass are heated to the same temperature in a boiling water bath. The specific heat capacities of each metal is displayed to students: Al 0.903 J/g°C Pb 0.160 J/g°C
How does the specific heat of a substance work?
So specific heat is the amount of heat required to raise the temperature of a unit mass of a substance by one degree (typically, Celsius). Basically all this is saying is that, if you had something, and you wanted to raise its temperature to a certain amount, how much energy would you need to actually do that based on the mass of that thing?