Which of these is an extensive property of a substance

The characteristics that enable us to distinguish one substance from another are called properties. A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity. We can observe some physical properties, such as density and color, without changing the physical state of the matter observed.

One of the ways we can describe chemical substances is with extensive and intensive properties. This video will teach you about the difference between these two terms. You will also see some examples of each, and you'll have a chance to practice what you've learned at the end of the video. These are properties of a substance which are characteristic to the substance and it's identity. Intensive properties are dependent on the matter that substances are made of. Intensive properties vary between different substances.

Which of these is an extensive property of a substance

Physical or chemical properties of materials and systems can often be categorized as being either intensive or extensive , according to how the property changes when the size or extent of the system changes. The terms "intensive and extensive quantities" were introduced into physics by German mathematician Georg Helm in , and by American physicist and chemist Richard C. Tolman in By contrast, an extensive property or extensive quantity is one whose magnitude is additive for subsystems. Not all properties of matter fall into these two categories. For example, the square root of the volume is neither intensive nor extensive. An intensive property is a physical quantity whose value does not depend on the amount of substance which was measured. The most obvious intensive quantities are ratios of extensive quantities. In a homogeneous system divided into two halves, all its extensive properties, in particular its volume and its mass, are divided into two halves. All its intensive properties, such as the mass per volume mass density or volume per mass specific volume , must remain the same in each half. The temperature of a system in thermal equilibrium is the same as the temperature of any part of it, so temperature is an intensive quantity. If the system is divided by a wall that is permeable to heat or to matter, the temperature of each subsystem is identical. Additionally, the boiling temperature of a substance is an intensive property. Any extensive quantity "E" for a sample can be divided by the sample's volume, to become the "E density" for the sample; similarly, any extensive quantity "E" can be divided by the sample's mass, to become the sample's "specific E"; extensive quantities "E" which have been divided by the number of moles in their sample are referred to as "molar E".

For example, heat capacity is an extensive property of a system. Some intensive properties do not apply at very small sizes. Reflections on the Motive Power of Fire.

You agree to mow someone's lawn for twenty dollars it's a fairly large yard. Some properties of matter depend on the size of the sample, while some do not. An extensive property is a property that depends on the amount of matter in a sample. The mass of an object is a measure of the amount of matter that an object contains. A small sample of a certain type of matter will have a small mass, while a larger sample will have a greater mass.

All matter has physical and chemical properties. Physical properties are characteristics that scientists can measure without changing the composition of the sample under study, such as mass, color, and volume the amount of space occupied by a sample. 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. For example, pure copper is always a reddish-brown solid a physical property and always dissolves in dilute nitric acid to produce a blue solution and a brown gas a chemical property. Physical properties can be extensive or intensive.

Which of these is an extensive property of a substance

The characteristics that distinguish one substance from another are called properties. A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity. Some physical properties, such as density and color, may be observed without changing the physical state of the matter.

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ISBN We can identify sets of elements that exhibit common behaviors. Zeroth First Second Third. The electrical conductivity of a substance is a property that depends only on the type of substance. A change in the amount of electric polarization is associated with an electric field change. The value of an extensive property depends upon the amount of matter being considered, whereas the value of an intensive property is the same regardless of the amount of matter being considered. Reflections on the Motive Power of Fire. Is this a chemical or physical change? Likewise, at a very small scale color is not independent of size, as shown by quantum dots , whose color depends on the size of the "dot". For example, heat capacity is an extensive property of a system.

The characteristics that enable us to distinguish one substance from another are called properties. A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.

A specific property is the intensive property obtained by dividing an extensive property of a system by its mass. System properties. What Is Energy? S2CID All its intensive properties, such as the mass per volume mass density or volume per mass specific volume , must remain the same in each half. In a homogeneous system divided into two halves, all its extensive properties, in particular its volume and its mass, are divided into two halves. In thermodynamics, some extensive quantities measure amounts that are conserved in a thermodynamic process of transfer. Not all properties of matter fall into these two categories. Some properties of matter depend on the size of the sample, while some do not. Go back to previous article. Cassie Gates. The conductivity is a property of the copper metal itself, not of the length of the wire.