What is the specific heat capacity and what is the specific heat capacity

Because of the different number of electron layers, the height of the electron separation surface is different, the gravitational force between the electron and the nucleus is different, and the difference in the saturation equilibrium degree of electrons in the outermost and subouter shells will also affect the different gravitational force on the surface of the electron and the nucleus. The gravitational force is different, so that the radius of the outermost electron orbit increases by the same length, and the heat needs to be consumed differently (that is, similar to the same altitude of different mass substances, the kinetic energy required is different). Since the heat consumed is different, that is, the heat absorption is different, but the radius of increase is the same, that is, the increased temperature is the same.

This phenomenon of increasing the same temperature while absorbing different amounts of heat is the specific heat capacity. For example, aluminum has one less layer of electrons than iron, so that aluminum electrons are closer to the surface of the nucleus than iron, that is, the gravitational attraction between aluminum electrons and nuclei is greater than that of iron, so that the outermost electrons of aluminum and the outermost electrons of iron increase the same length, that is, increase the same temperature, aluminum needs to absorb more heat than iron, so the specific heat capacity of aluminum is greater than iron.

1. Specific heat capacity is a physical quantity determined by the type of substance, and it is a property of matter.

2. Definition of junior high school physics: the heat absorbed (or released) by a certain substance per unit mass (1kg) when the temperature rises (or decreases)1 is called the specific heat capacity of the substance.

3. Symbol of specific heat capacity: c.

4. The unit of specific heat capacity: j (kg).

5. Remember the specific heat capacity of water: c=

Hello, according to the problem you described, the specific heat capacity refers to the amount of heat required to increase the temperature of 1kg of homogeneous substances by 1k when there is no phase change and chemical change. Using the concept of specific heat capacity, it is possible to deduce a molar heat capacity that represents the amount of heat required to raise 1 k of a mol of substance. And the molar heat capacity cp under isobaric conditions is called constant pressure molar heat capacity.

The molar heat capacity CV under isochoric conditions is called the constant volume molar heat capacity. The relationship between the constant pressure molar heat capacity and temperature is usually correlated as a polynomial. The above is for your reference.

Specific heat capacity refers to the amount of heat required to increase the temperature of 1kg of homogeneous substances by 1k when there is no phase change and chemical change.

Specific heat capacity is a physical quantity that describes the speed of heat absorption and heat release of a substance, which is represented by the lowercase letter c, which means the energy absorbed or released by a unit mass of a substance for every 1 increase or decrease of 1, and its unit is the composite unit j (kg· ).

Automobile water tank: it is the main part of the automobile cooling system; Its function is to dissipate heat, the cooling water absorbs heat in the water jacket, dissipates the heat after flowing to the radiator, and then returns to the water jacket and circulates continuously. So as to achieve the effect of heat dissipation and temperature regulation.

Hot water bottle, water in the cellar of the north:

The specific heat of water is large, which has a significant impact on climate change. In the case of the same heating or cooling, the temperature change of water is smaller, this characteristic of water has a great influence on the climate, the temperature rise in the coastal area is slower than that in the inland area during the day, and the coastal temperature decreases less at night, so the temperature change in the coastal area is small in the day, and the temperature change in the inland is large, and the inland is hotter than the coastal in the summer of the year, and the inland is colder than the coastal in winter.

Heating with hot water, radiators and warm water bags for heating in winter.

Cooling the engine of a car, the generator of a power plant, etc. with water.

When cultivating seedlings in rural areas, in order to protect the seedlings from freezing at night, water should be irrigated into the seedling field in the evening, and the temperature in the seedling field will not drop too much at night, and the seedlings will not freeze bad, and then put the water out in the morning, so that the seedling temperature is higher with sunshine, which is conducive to growth.

Specific heat capacity, represented by the symbol C, is also known as specific heat capacity, which is the heat capacity of a unit mass substance, that is, the heat absorbed or emitted by a unit mass object when it changes its unit temperature.

1. Specific heat capacity:

1. The specific heat capacity is represented by the symbol C, also known as the specific heat capacity, referred to as the specific heat of the mountain, which is the heat capacity of a unit mass substance, that is, the heat absorbed or released by a unit mass object when it changes the unit temperature.

2. Using the concept of specific heat capacity, the molar heat capacity representing the heat required to increase 1K of 1 molar substance can be deduced by analogy, and the molar heat capacity cp under isobaric conditions is called constant pressure molar heat capacity, and the molar heat capacity CV under isochoric conditions is called constant volume molar heat capacity.

3. Specific heat capacity is a commonly used physical quantity in thermodynamics, which indicates the ability of a substance to increase the heat required to increase temperature, rather than the ability to absorb or dissipate heat. It refers to the amount of heat absorbed or emitted by a unit temperature of a certain substance per unit mass as it rises or falls.

4. When the temperature of a certain mass of a substance rises, the ratio of the heat absorbed to the mass of the substance and the product of the temperature of the increase is called the specific heat capacity of the substance.

Second, the role of regulation:

1. The specific heat capacity of water is large, and it has a wide range of applications in industrial and agricultural production and daily life. This application mainly considers two aspects, the first is that a certain quality of water absorbs or releases a lot of heat while its own temperature does not change much, which is conducive to regulating the climate, and the second is that a certain quality of water rises or decreases a certain temperature to absorb heat or release a lot of heat, which is conducive to using water as a coolant or heating.

2. The specific heat capacity of water is large, which has a significant impact on climate change. In the case of the same heating or cooling, the temperature change of water is small, this characteristic of water has a great influence on the climate, the coastal area heats up more slowly than the inland area during the day, and the coastal temperature decreases less at night, so the temperature change in the coastal area is small in the day, and the temperature change in the inland is large, the inland is hotter than the coastal in the summer of the year, and the inland is colder than the coastal in winter.

3. On a sunny and windless summer, the surface temperature on the island is higher than the surrounding sea temperature, resulting in the formation of sea breeze circulation and cumulus convection over the island, which is the manifestation of the marine heat island effect.

1. When the temperature of a certain mass of a substance rises, the ratio of the heat absorbed to the mass of the substance and the product of the temperature of the increase is called the specific heat capacity (specific heat) of the substance, which is represented by the symbol C. The units in the International System of Units are joules per kilogram of Kelvin [j (kg·k)] or joules per kilogram of Celsius [j (kg·) j is for joules and k is for the thermodynamic temperature scale, which is the amount of energy required to raise (or fall) the temperature of 1 kilogram of a substance by 1 Kelvin.

2. Specific heat capacity (symbol C), referred to as specific heat capacity, also known as specific heat capacity, is a commonly used physical quantity in thermodynamics, which is used to represent the heat absorption or heat dissipation ability of a substance. The greater the specific heat capacity, the greater the ability of the substance to absorb heat or dissipate heat. It refers to the amount of heat absorbed or emitted by a unit temperature of a certain substance per unit mass as it rises or falls.

The unit in the SI is joules per kilogram of Kelvin [j (kg· k)], i.e. the amount of heat required to raise the temperature of 1 kg of a substance by 1 Kelvin.

Specific heat capacity is a physical quantity that represents the thermal properties of a substance. It is usually denoted by the symbol c. If an object with a mass of m absorbs (or emits out) heat δq in a certain process, and the temperature increases (or decreases) δt, then δq δt is called the heat capacity of the object in this process (referred to as heat capacity), which is represented by c, that is, c = δq δt.

Divide the heat capacity by the mass to obtain the specific heat capacity c=c m=δq mδt. For the heat capacity and specific heat capacity of the micro process, there are c=dq dt, c=1 m*dq dt, respectively. Therefore, in the finite process of the temperature change from t1 to t2, the heat absorbed (or released) q = (t2,t1)cdt = m (t2,t1)cdt.

In general, the heat capacity and specific heat capacity are both functions of temperature, but when the temperature variation range is not too large, they can be approximated as constants. So there is q=c(t2-t1)=mc(t2-t1). If the temperature change is δt=t2-t1, then q=cmδt.

This is the basic formula for calculating heat in secondary schools using specific heat capacity. The formula for calculating the heat related to specific heat is: Q = cmδt i.e. q absorption (discharge) = cm (t-t1) where c is the specific heat, m is the mass, t is the final temperature, t1 is the initial temperature, and q is the energy.

When it is endothermic, it is Q=cmδt liter (the actual raised temperature is used to reduce the initial temperature of the object), and when it is exothermic, it is Q=cmδt (the actual initial temperature is used to reduce the temperature after the drop). Or q=cmδt=cm (end of t - beginning of t), q>0 is endothermic and q<0 is exothermic. Specific heat capacity of the mixture:

Weighted average calculation: c= c m=(m1c1+m2c2+m3c3+....)m1+m2+m3+…The specific heat capacity of a gas is defined: cp

The heat capacity when the pressure is unchanged and the temperature changes with the volume, cp=dh dt, h is the enthalpy. cv

The heat capacity when the volume is unchanged and the temperature changes with the pressure, CV=du dt, and U is the internal energy. Then when the temperature of the gas is t and the pressure is p, the specific heat capacity of the gas when the heat dq is provided:

cp*m*dt=cv*m*dt+pdv；where dt is the temperature change and dv is the volume change.

Specific heat capacity: For gases with f degrees of freedom.

The specific heat capacity and molar ratio is: cv,m=r*f 2 cv=rs*f 2 r= Meyer's formula: cp=cv+r specific heat capacity ratio:

CP CV multi-party specific heat capacity: CN=CV-R (N-1)=CV*( N) (1-N) For both solids and liquids, the specific heat capacity CP can be measured with the specific constant pressure heat capacity CP, i.e., C=CP (measured by a defined method C=DQ MDT).

Dulong-Petit Rule:

There is a simple rule that all metals have a fixed one within a certain temperature range.

cp 25j (mol·k) so cp=25 m, where m is the molar mass and the specific heat capacity unit j (mol·k). Hopefully, thank you.

Explain the upstairs.

q=cm△t。。This is the formula.

q is the heat that is released.

c is the specific heat capacity.

t is the time of change.

where t is the variable...

c is not a variable.

Specific heat capacity is the physical property of a substance, which is fixed and does not change with temperature.

Looking at the definition of specific heat capacity, it is easy to understand that the heat absorbed by a certain substance per unit mass of a certain mass rises in temperature1 and is called the specific heat capacity of the substance, referred to as specific heat.

The specific heat capacity of water is coul kilograms Celsius, and the specific heat capacity of vapor is coul kilograms Celsius. The specific heat capacity is not related to the temperature, but to the state of the sock.

The amount of heat absorbed by a unit mass of a substance as its temperature rises1 is called the specific heat capacity of the clearing substance, or specific heat for short.

I don't know how to continue to ask, and beg.

c=q/m·△t。

1. The concept of specific heat capacity.

The ratio of the heat absorbed by a certain mass of a substance at an elevated temperature to the product of its mass and elevated temperature is called the specific heat capacity of the substance.

The above inverse process is also valid. That is, the ratio of the heat emitted by a certain mass of a certain substance when the temperature is lowered to the product of its mass and the reduced temperature is called the specific heat capacity of the substance.

Definition of specific heat capacity: c=q (m t); In the above formula, q is the heat, c is the specific heat capacity, m is the mass of the object, and t is the temperature difference.

The specific heat capacity is measured in coules per kilogram of Celsius and the symbol is j (kg).

2. Derivation of the specific heat capacity formula.

Definition of specific heat capacity: c=q (m t); It can be deduced that m= q c t; q=cm△t =cm(t1-t0)。

Note: T1 is high temperature; t0 is low temperature.

t1= t0+q /cm；t0= t1-q /cm。

3. Experiment: compare the endothermic absorption of different substances.

Electric heaters, glasses, thermometers of the same specification. Heat water and cooking oil of the same quality so that both substances rise to the same temperature and compare how much heat they absorb.

Conclusion: Different substances absorb different amounts of heat when they have the same mass and the same elevated temperature.