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Why is hot water sometimes cloudy?
Hot water is often cloudy due to the presence of dissolved air that is trying to come out of solution - the air dissolved in the water when it was cooler and when the water was heated up the solubility of the air decreases.
How can you prove air is matter?
The classical definition says anything that occupies space is matter. To prove air occupies space we can do a small experiment. Take a balloon and blow air in it. The balloon expands and this proves that air occupies space. And thus we can prove air is matter.
Does gravity act normally in a room with all the air removed?
Yes. Gravity doesn't depend on the presence of air, water, jello, or anything else. None of them makes any difference.
How does air effect gravity?
Air has no effect on gravity. But the presence of air can change the response of an object to the force of gravity alone.
Can you hear in a vacuum?
No. Since there is no air in a vacuum and sound travels only with the presence of air, you can't hear in a vacuum.
How can you prove the presence of diffused air in fresh water?
For example Oxygen in the air diffused in rivers or ponds for the aquatic animals to breath. The rate of diffusion of liquids is more compared to solids.
How do you prove that water vapour is present in the air by using only a beaker and several ice cubes?
When ice cubes are kept in beaker the water vapour in the air condenses on the outer walls of the beaker.this shows the presence of vapour in air.
The presence of water vapor in pure air?
Increases Density
What substances are directly involved in photosyntehsis?
Carbon dioxide diffused from the air, water from a root source and photons of light striking the chlorophyll pigment.
How could you prove there is water in the air even though it cannot be seen?
Condensation, freezing the air.
Will the presence of dust in the air expedite or slow cloud formation?
The presence of dust in the air expedites cloud formation. This is because the water droplets stick to the dust.
Was does iron react with?
Iron can react with water in the presence of air and form rust.
What is the bacteria which act upon waste water in presence of air?
aerobic bacteria
Why presence of moisture increases speed of sound in air?
because water is a batter sound conductor than air
What is the meaning of emphysema?
A swelling produced by gas or air diffused in the cellular tissue.
Where did oxygen come from in the ocean?
It is diffused from the air, in the atmosphere, and from plant life in the ocean.
When Iron corrodes in the presence of air and water to form what?
IRON OXIDE.......AKA RUST!
