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What Materials that have positive temperature coefficient?
Some materials with a positive temperature coefficient of resistance include silicon, germanium, and thermistors made of certain metal oxides like manganese, cobalt, and copper. These materials exhibit an increase in resistance with an increase in temperature, making them useful in temperature-sensing applications.
Which element has the highest ionization rate Sodium aluminum calcium or phosphorus?
phosphorous has highest ionization enthalpy because along the period ionization will increase.
What will Lowering air temperature will do to relative humidity?
Lowering air temperature will increase the relative humidity, assuming the amount of water vapor in the air remains constant. This is because colder air has a limited capacity to hold moisture, so the relative humidity will increase as the air temperature decreases.
What happens if the percentage of felsic minerals in a rock increase?
If the percentage of felsic minerals in a rock increases, the rock will become lighter in color and less dense. Felsic minerals are rich in silica and aluminum, so the rock may also become more viscous when melted. Additionally, the rock's melting temperature may decrease.
Which is bigger in size aluminum atom or chlorine atom?
The chlorine atom is bigger in size than the aluminum atom. This is because the atomic radius of chlorine is larger than that of aluminum due to the additional electron shells present in the chlorine atom.
Which would take more energy to increase temperature by 5 degrees water or Aluminum?
It would take more energy to increase the temperature of water by 5 degrees than aluminum. This is because water has a higher specific heat capacity, meaning it requires more energy to raise its temperature compared to aluminum.
Will concrete brick aluminum or copper take most energy to increase its temperature?
Copper will take the most energy to increase its temperature, followed by aluminum and then concrete brick. This is because copper has a higher specific heat capacity compared to aluminum and concrete brick, meaning it requires more energy to raise its temperature.
What happens to aluminum if you increase temperature?
It become a Solid
Why does aluminum heat up faster than steel?
Aluminum has a lower specific heat capacity than steel, meaning it requires less energy to increase its temperature. This is why aluminum heats up faster than steel when exposed to the same amount of heat. Additionally, aluminum has higher thermal conductivity, which allows it to transfer heat more efficiently.
What occurs when a 35-gram aluminum cube at 100C is placed in 90 grams of water at 25C in an insulated cup?
The aluminum cube will lose heat as it cools down to the final temperature of the system. This heat will be transferred to the water causing it to increase in temperature. The final equilibrium temperature will be somewhere between the initial temperatures of the aluminum and water.
What substance will increase the most in temperature 100G?
Substances with a low specific heat capacity will experience the greatest increase in temperature when 100g of heat is added. This means that metals like copper or aluminum, which have low specific heat capacities, will increase in temperature the most compared to substances like water or sand which have higher specific heat capacities.
Will aluminium react with water?
Aluminum will not react with water at normal temperatures. Increase the temperature greatly, and just about any two things will react, though.
Temperature of aluminum roofing.?
Aluminum roofing is typically use on sheds or other out buildings. It doesn't have any insulating value and therefore is not generally suitable for a home. In the Summer they also increase the heat in the building.
What process is used on aluminum to increase hardness?
To increase the hardness of aluminum, a process called "heat treatment" is commonly used, particularly through aging or solution heat treatment followed by aging. This involves heating the aluminum alloy to a specific temperature to dissolve alloying elements, then rapidly cooling it, and finally reheating it to a lower temperature, allowing the formation of precipitates that enhance hardness and strength. Additionally, processes like cold working can also be employed to further increase hardness by deforming the metal at room temperature.
What happens to the density of aluminum if you heat it?
When you heat aluminum, its density decreases. This is because the atoms in the metal vibrate faster and more energetically, which causes them to spread apart slightly. The increase in volume with temperature causes a corresponding decrease in density.
What metal will have the highest temperature with specific heat of aluminum 0.215 copper 0.092 and silver of 0.057?
I would like to start off by saying that: Energy absorbed by metal = mass of metal x specific heat capacity of metal x change in temperature of the metal If the same amount of energy is given to all three metals, there would be the highest temperature increase in the metal with the lowest specific heat capacity. Therefore, Silver would be the answer.
Two ways can aluminum be hardened?
Aluminum can be hardened through heat treatment processes such as precipitation hardening, where the aluminum is heated and then rapidly cooled to increase its strength. Another method is cold working, where the aluminum is deformed at low temperatures to introduce dislocations and improve its mechanical properties.
