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Density is a measure of the amount (as a mass) of something for a given volume (liters).
So, for example, there may be 1 billion atoms in 1 liter of air. If this volume of air expands, then the individual atoms will become further apart, and you will therefore have fewer atoms in the 1 liter of air, and there fore it will be less dense.
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∙ 14y ago
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Is compressed air less dense than expanded air?
Compressed air is MORE dense than expanded air. Density is the measure of an objects mass (measured in grams, kilograms, pounds etc) divided by its volume (cubic centimetres, litres, cubic feet, cubic yards etc). D= m/V Decreasing the volume of an object, or in this case a fixed amount of air, increases the density because the mass does not change but the volume gets smaller. Increasing the volume (expanded air) causes the density to decrease.
When air bubbles rises in water its volume increases what happens to its mass and density?
As the air bubble increases in volume, its mass remains constant. Because the mass remains constant but volume increases, density will decrease.
If you squeezed a balloon and made it smaller would the density in the air would become greater?
Yes. When you squeeze the balloon, you cause the volume to decrease. Since density is determined by dividing mass by volume, a decrease in volume will cause an increase in denisty.
What property will decrease if temperature increases?
Density will usually decrease in this case.
When fluids expand when they are heated does their density increase?
No. Remember that density is a ratio of mass compared to volume. If the volume increases without adding more mass, then the density would decrease. This is why hot air balloons rise.
What happens when a gas is expanded?
A consequence is the decrease of density.
Is compressed air less dense than expanded air?
Compressed air is MORE dense than expanded air. Density is the measure of an objects mass (measured in grams, kilograms, pounds etc) divided by its volume (cubic centimetres, litres, cubic feet, cubic yards etc). D= m/V Decreasing the volume of an object, or in this case a fixed amount of air, increases the density because the mass does not change but the volume gets smaller. Increasing the volume (expanded air) causes the density to decrease.
Does cold air increase or decrease water density?
decrease
How do you decrease the density of air?
Keep it dry.
When altitude increases does air density?
The density of the atmosphere decreases with altitude.
How does the density of air increase or decrease?
By Removing or addng heat
Why does density of air decrease with increase in height?
The density of air decreases with increasing altitude because air at high altitudes is under less pressure.
As a parcel of air increases in altitude its pressure will?
No, the density lowers. When air expands, the volume of area it takes up increases while the density decreases. The molecules move apart.
What effect does air density have on the absorption and radiation of energy?
An increase in air density will mean a decrease in the absorption and radiation of energy. An increase of air density causes temperature and pressure to rise.
When a submarine pumps water out of its floatations tanks its density decreases and it floats Why does its density decrease?
Because the tanks are filled with air afterwards. Air has a lower density than water.
When a submarine pumps water out of its floatations tanks it density decreases and it floats. Why does its density decrease?
Because the tanks are filled with air afterwards. Air has a lower density than water.
When a submarine pumps water out of its floatation tanks its density decreases and it floats. why does its density decrease?
Because the tanks are filled with air afterwards. Air has a lower density than water.
