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2006-10-21 18:01:49 · 14 answers · asked by diya 1 in Education & Reference Homework Help

14 answers

Gas, liquid, and solid are known as the three states of matter or material, but each of solid and liquid states may exist in one or more forms. Thus, another term is required to describe the various forms, and the term phase is used. Each distinct form is called a phase, but the concept of phase defined as a homogeneous portion of a system, extends beyond a single material, because a phase may also involve several materials. For example, a homogeneous solution of any number of substances is a one-phase system. Phase is a concept used to explain many physical and chemical changes reactions.
A solid has a definite shape and volume. A liquid has a definite volume but it takes the shape of a container whereas a gas fills the entire volume of a container. You already know that diamond and graphite are solids made up of the element carbon. They are two phases of carbon, but both are solids.
Solids are divided into subclasses of amorphous solids and crystalline solids. Arrangements of atoms or molecules in crystalline solids are repeated regularly over a very long range of millions of atoms, but their arrangements in amorphous solids are somewhat random or short range of say some tens or hundreds of atoms.
In general, there is only one liquid phase of a material. However, there are two forms of liquid helium, each have some unique properties. Thus, the two forms are different (liquid) phases of helium. At a definite temperature and pressure, the two phases co-exist.
So far, all gases behave alike as do mixtures of gases. Thus, a gas is usually considered as a phase

2006-10-23 21:30:31 · answer #1 · answered by aravind 2 · 0 0

Gas, liquid, and solid are known as the three states of matter or material, but each of solid and liquid states may exist in one or more forms. Thus, another term is required to describe the various forms, and the term phase is used. Each distinct form is called a phase, but the concept of phase defined as a homogeneous portion of a system, extends beyond a single material, because a phase may also involve several materials. For example, a homogeneous solution of any number of substances is a one-phase system. Phase is a concept used to explain many physical and chemical changes (reactions).
A solid has a definite shape and volume. A liquid has a definite volume but it takes the shape of a container whereas a gas fills the entire volume of a container. You already know that diamond and graphite are solids made up of the element carbon. They are two phases of carbon, but both are solids.

Solids are divided into subclasses of amorphous (or glassy) solids and crystalline solids. Arrangements of atoms or molecules in crystalline solids are repeated regularly over a very long range of millions of atoms, but their arrangements in amorphous solids are somewhat random or short range of say some tens or hundreds of atoms.

In general, there is only one liquid phase of a material. However, there are two forms of liquid helium, each have some unique properties. Thus, the two forms are different (liquid) phases of helium. At a definite temperature and pressure, the two phases co-exist.

So far, all gases behave alike as do mixtures of gases. Thus, a gas is usually considered as a phase.


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2006-10-22 05:21:38 · answer #2 · answered by jugnu 3 · 0 0

water is the only thing in the world that can be all three of those forms (ice, water, and vapor)

in solids, the molecules are tightly packed; liquids, not so much, and gases very loose.

liquids and gases take the shape of their container... solids have their own distinctive shape. y'know, like water can fill a glass without leaving any spaces, but if you put ice in it, there are some spaces in between each cube.

2006-10-21 18:07:35 · answer #3 · answered by Anonymous · 0 0

A solid object is in the phase of matter characterized by resistance to deformation and changes of volume.
At the microscopic scale, a solid has these properties:
The atoms or molecules that comprise the solid are packed close together.
These constituent elements have fixed positions in space relative to each other. This accounts for the solid's rigidity.
If sufficient force is applied, either of these properties can be violated, causing permanent deformation.
Because any solid has some thermal energy, its atoms vibrate. However, this movement is very small and very rapid, and cannot be observed under ordinary conditions.
The branch of physics that deals with solids is called solid-state physics, and is a type of condensed matter physics. Materials science is primarily concerned with properties of solids such as strength and phase transformations. It overlaps strongly with solid state physics. Solid-state chemistry overlaps both of these fields, but is especially concerned with the synthesis of novel materials.

A liquid is one of the main phases of matter. It is a fluid whose shape is usually determined by the container it fills. Liquid particles (normally molecules or clusters of molecules) are free to move[citation needed] within the liquid volume, but their mutual attraction limits ability of particles to leave the volume. The volume of a quantity of liquid is fixed by its temperature and pressure. Unless this volume exactly matches the volume of the container, a surface is observed. The surface of the liquid behaves as an elastic membrane in which surface tension appears, allowing the formation of drops and bubbles. Capillarity is another consequence of surface tension. Liquids are generally resistant to compression: water, for example, does not change its density appreciably unless subject to pressure of the order of a gigapascal.

A gas is one of the five main phases of matter (after solid and liquid, and followed by plasma and Bose-Einstein Condensate) and, that subsequently appear as a solid material is subjected to increasingly higher temperatures. Thus, as energy in the form of heat is added, a solid (e.g. ice) will first melt to become a liquid (e.g. water), which will then boil or evaporate to become a gas (e.g. water vapor). In some circumstances, a solid (e.g. "dry ice") can directly turn into a gas: this is called sublimation. If the gas is further heated, its atoms or molecules can become (wholly or partially) ionized, turning the gas into a plasma.

2006-10-22 06:47:12 · answer #4 · answered by Anonymous · 0 0

solids are the substances whose atoms are compactly packed.liquids are the substances whise atoms are loosely packed.n gases are substances whose molecules are very loosely packed.the solid atoms have great force of attraction amongst them as compared to liquid followed by gases.solids have a particular shape,liquidz take d shape of the container,wheres gases dun have shape.solids cant b compressed.liquids can be compressed to som extent where gases are fully compressible.solid have a definite volume,liquids too have,but gases dun have.

2006-10-21 18:09:03 · answer #5 · answered by ashu 1 · 0 0

A solid object is in the phase of matter characterized by resistance to deformation and changes of volume.

At the microscopic scale, a solid has these properties:

The atoms or molecules that comprise the solid are packed close together.
These constituent elements have fixed positions in space relative to each other. This accounts for the solid's rigidity.
If sufficient force is applied, either of these properties can be violated, causing permanent deformation.
Because any solid has some thermal energy, its atoms vibrate. However, this movement is very small and very rapid, and cannot be observed under ordinary conditions.
The branch of physics that deals with solids is called solid-state physics, and is a type of condensed matter physics. Materials science is primarily concerned with properties of solids such as strength and phase transformations. It overlaps strongly with solid state physics. Solid-state chemistry overlaps both of these fields, but is especially concerned with the synthesis of novel materials.

The lightest known solid is man-made and is called aerogel. The lightest aerogel produced has a density of 1.9 mg per cm3 or 1.9 kg/m3 (526.3 times lighter than water).



A liquid is one of the main phases of matter. It is a fluid whose shape is usually determined by the container it fills. Liquid particles (normally molecules or clusters of molecules) are free to move[citation needed] within the liquid volume, but their mutual attraction limits ability of particles to leave the volume. The volume of a quantity of liquid is fixed by its temperature and pressure. Unless this volume exactly matches the volume of the container, a surface is observed. The surface of the liquid behaves as an elastic membrane in which surface tension appears, allowing the formation of drops and bubbles. Capillarity is another consequence of surface tension. Liquids are generally resistant to compression: water, for example, does not change its density appreciably unless subject to pressure of the order of a gigapascal.

Liquids in a gravitational field exert pressure on the sides of a container as well as on anything within the liquid itself. This pressure is transmitted in all directions and increases with depth.

If a liquid is at rest in a uniform gravitational field, the pressure at any point is given by


where:

= the density of the liquid (assumed constant)
= gravity
= the depth of the point below the surface.
Note that this formula assumes that the pressure at the free surface is zero, and that surface tension effects may be neglected.

Liquids generally expand when heated, and contract when cooled. Water at 0 to 4 C is an exception.

Objects immersed in liquids are subject to the phenomenon of buoyancy, which is also observed in other fluids, but is especially strong in liquids due to their high density.

Liquids at their respective boiling point change to gases, and at their freezing points, change to solids. Even below the boiling point liquid evaporates on the surface. A liquid will evaporate until the concentration of the vapors belonging to the liquid reach an equilibrium partial pressure in the gas. Therefore no liquid can exist permanently in a vacuum.

Liquid components in a mixture can often be separated from one another via fractional distillation


A gas is one of the five main phases of matter (after solid and liquid, and followed by plasma and Bose-Einstein Condensate) and, that subsequently appear as a solid material is subjected to increasingly higher temperatures. Thus, as energy in the form of heat is added, a solid (e.g. ice) will first melt to become a liquid (e.g. water), which will then boil or evaporate to become a gas (e.g. water vapor). In some circumstances, a solid (e.g. "dry ice") can directly turn into a gas: this is called sublimation. If the gas is further heated, its atoms or molecules can become (wholly or partially) ionized, turning the gas into a plasma.

2006-10-21 18:42:34 · answer #6 · answered by santy_kushwaha 3 · 0 0

solids have their atoms and molecules very closely packed,liquids have them loosely held...where as there exists no forces of attraction between gas molecules. this explains why solids have a definite shape, liqiuds occupy the shape of their container and gases spread everywhere

2006-10-24 20:40:03 · answer #7 · answered by sher 2 · 0 0

These items are three stages of a substance depending upon pressure and temperature exerted on it. Take example of water it is a liquid in room temperature, if you cool it below 0 degree it is ice i.e. solid or if you heat it above 100 degree it is steam i.e. gas.

2006-10-21 18:12:14 · answer #8 · answered by deepak57 7 · 0 0

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2016-03-28 03:45:25 · answer #9 · answered by ? 4 · 0 0

In solids the molecules are closely packed due to which the intermolecular force between them is tightly held and they can't move away from each other.Solids have definite shape and size,they can't flow from higher to lower level.
In liquids the molecules are loosely packed due to which the intermolecular force between them is loosely packed and they can move away from each other.Liquidsdo not have definite shape and size,they can flow from higher to lower level.
In gases the molecules are more loosely packed due to which the intermolecular force between them is loosely packed and they can move away from each other.Gases do not have definite
shape and size,they can flow in all direction.

2006-10-21 18:51:35 · answer #10 · answered by sweety 1 · 0 0

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