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What variable changes as gas contracts or expands upon a change in temperature?
Wiki User
∙ 15y ago
Volume (and of course temperature). Pressure could also change, but the way your question is worded - "as gas contracts or expands" - I'm assuming that there is no constraint on the volume, thus the pressure will stay the same.
Here's two examples to explain:
Take a beach ball (those really thin collapsible plastic balls) that is only half way inflated. If the temperature increases, the ball will look fuller (it's volume will increase). But, because the outer plastic is not stretched tight, the pressure will not change.
Now, consider the same ball where it starts out already completely inflated. If you increase the temperature the ball will get a little bigger (an increase in volume), but it will also get tighter. Tighter indicates that the pressure is now higher in the ball. Because the pressure has increased some in this case, the volume change will be less (by percentage, and for the same temperature change). This second case is more complex, and to make any calculations about the pressure and volume changes you would need to know a number of properties about the ball that you wouldn't need in the first case.
Wiki User
∙ 15y ago
Wiki User
∙ 15y agoThe Pressure increases. The basic variables of gas behavior are pressure (P), temperature (T) and volume (V). "Compressed" means that V is decreased. The behavior of a gas is described mathematically by PV=kT. So if T is constant, then P has to increase as V decreases.
Wiki User
∙ 13y agothe volume of gas will decrease n thts follw boils law
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Does glass expand?
Glass expands and contracts according to the ambient temperature.
What is the definition of thermomiter?
An instrument for measuring temperature, often a sealed glass tube that contains a column of liquid, as mercury, that expands and contracts, or rises and falls, with temperature changes, the temperature being read where the top of the column coincides with a calibrated scale marked on the tube or its frame. Source~ dictionary.refrence.com
What is the thermometric property used in a mercury thermometer?
Not just a property of liquid but of all matter. All matter expands when heated and contracts when cooled, in thermometers the liquid, usually an alcohol, expands when heated lengthening the little line.
How does a liquid thermometer measure temperature?
The alcohol or mercury in a thermometer expands or contracts very precisely according to heat or cold.
What happens to a volume of a gas when temperature is decreased?
Temperature and volume vary directly, so if temperature decreases, so does volume. Volume decreases because the measure of the average kinetic energy of the gas particles (temperature) is decreasing also. When that happens, a gas cannot expand, and will decrease.
What is a liquid metal that expands and contracts as the temperature changes and is the metal used in thermometers called?
It is dew or ozone
Alcohol is used in thermometers because it?
It expands and contracts well when it changes temperature and it is less toxic them mercury.
Does a thermometer's mercurry expand contract on condenses?
it expands and contracts when the temperature drops, the mercury contracts...when the temperature increases, the mercury expands
Why measuring tapes are made of invar steels?
Because Invar steel expands and contracts very little with changes in temperature.
Why do floorboards in your house creak at night after the heating goes off?
Because wood expands and contracts with varying changes in temperature.
What are examples of thermal expansion and contraction?
the Mercury in a thermometer expands when heated and contracts when the temperature cools down.
What changes takes place in the liquid inside a thermometer when the thermometer is placed into something hot?
The liquid in thermometers expands when temperature increases (and contracts when temperature decreases). When it expands, the only place for it to expand 'to' is up the thermometer (into the empty space above it).
When air expands of contracts what type of temperature change does it experience?
adiabatic
Does glass expand?
Glass expands and contracts according to the ambient temperature.
What property of mercury make it good material for thermometer?
It's a liquid over a fair range of temperatures and it expands and contracts noticeably with small changes in temperature.
What property of mercury makes it a good material for thermometer?
It's a liquid over a fair range of temperatures and it expands and contracts noticeably with small changes in temperature.
Does plastic exspnd to temter changs?
Yes. Plastics don't have as large a size change in response to temperature changes as metals do, but everything expands and contracts at least a little.
