what is the relation between heat capacity and specific heat capacity of a substance?
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Molar heat capacity is a measure of the amount of heat necessary to raise the temperature of one mole of a pure substance by one degree K. Specific heat capacity is a measure of the amount of heat necessary to raise the temperature of one gram of a pure substance by one degree K.
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I've just found out that a negative specific heat capacity is possible. ... Negative heat capacity would mean that when a system loses energy, its temperature increases.
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Density is simply a ratio between the mass of a sample and it's volume. Specific Heat is a measure of how much thermal energy is required to raise the temperature one degree Celsius of one gram of the material. There is no correlation between the two quantities.
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Heating a substance causes molecules to speed up and spread slightly further apart, occupying a larger volume that results in a decrease in density. Cooling a substance causes molecules to slow down and get slightly closer together, occupying a smaller volume that results in an increase in density.
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Internal energy is directly proportional to temperature. So if there is an increase in temperature, there is also an increase in internal energy.
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Intensive properties, such as density and color, do not depend on the amount of the substance present. Physical properties can be measured without changing a substance's chemical identity. Chemical properties can be measured only by changing a substance's chemical identity.
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The standard enthalpy of formation or standard heat of formation of a compound is the change of enthalpy during the formation of 1 mole of the substance from its constituent elements, with all substances in their standard states.
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Q = m*s*dT, where Q = heat, m = mass, s = specific heat, and dT is the change in temperature (T2 - T1). You can use this formula to calculate the specific heat.
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Latent heat is taken in / or given out when a material changes state e.g. solid to liquid or liquid to gas. The specific heat capacity of a material is the amount of energy (Q) needed to raise 1 kg of a material through a temperature change of 1 kelvin.
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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.
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Specific heat values for liquids will never vary for different ranges of temperature. The specific heat of a gas may be measured at constant pressure. - is accurate when discussing specific heat.
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The main difference between specific heat and heat capacity is that specific heat is the amount of energy needed to raise the temperature of a given sample by 1 K while heat capacity is the amount of energy needed to raise the temperature of 1 kg of substance by 1 K.
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Temperature is related to heat but is not the same. It is measured in and refers to how hot or cold a substance it. The temperature of an object relates to both the kinetic energy of its particles and the number of particles. Temperature is the average kinetic energy of the particles in a substance.
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Chemical properties describe the characteristic ability of a substance to react to form new substances; they include its flammability and susceptibility to corrosion. All samples of a pure substance have the same chemical and physical properties.
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At constant volume, the heat of reaction is equal to the change in the internal energy of the system. At constant pressure, the heat of reaction is equal to the enthalpy change of the system.
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Specific heat is the amount of heat required to raise the temperature of a substance a certain amount. Latent heat is the amount of heat released during a change of state, i.e. the boiling of water or the melting of ice.
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The specific heat represents the amount of energy required to raise 1 kg of substance by 1oC (or 1 K), and can be thought of as the ability to absorb heat. The SI units of specific heats are J/kgK (kJ/kgoC). Water has a large specific heat of 4.19 kJ/kgoC compared to many other fluids and materials.