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Answered 2007-11-05 15:01:08

the heat required to convert a solid into a liquid or vapor, or a liquid into a vapor, without change of temperature.

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What is changing a liquid to a gas gradually at temperatures below boiling point?

This is called evaporation. It is different from boiling because it only occurs at the top layer of molecules of the liquid, while the latter occurs in the whole body of the liquid.

What happens when one liquid floats atop another liquid?

It means the liquid on top has a lesser density than the liquid on the below. The liquid on top sits on top and they don't mix unless the solution is swirled or stirred.

What happens when a liquid changes to a gas below its surface as well as on the surface?

When a liquid changes to a gas below and on the surface its called vaporization. On top- when a liquid changes to a gas above the surface its called density

Does a liquid have to boil to become a gas?

No, because bubbles are gases evaporating below the surface. If the liquid evaporates mostly on the top, there wouldn't be bubbles.

How would liquids with different densities look in a container?

The denser liquid would be below, while the less dense liquid would be on top.

Since gasoline and water are immiscible they will form layers one on top of the other What properties of the gasoline and water account for the layering?

layering occurs because one liquid is less dense than the other, and therefore floats on top of the more dense liquid. density is calculated as grams / vol. layering occurs because one liquid is less dense than the other, and therefore floats on top of the more dense liquid. density is calculated as grams / vol.

Do you read the meniscus of liquid medication at the top or bottom of the liquid?


Is liquid colder on top or bottom of an iced liquid?

On the top because that is where the ice is

What occurs when liquid soap and oil are combined?

The 2 liquids are so dense that the two liquids will sit in top of each other without mixing

Which liquid be on top?

The liquid with a lower density.

Where does photosynthesis happen in the ocean?

All photosynthesis occurs in the photic zone -- the top area of the ocean lit by the sun. No photosynthesis occurs below the photic zone (the aphotic zone) where the sunlight cannot penetrate.

Why is a vessel containing liquid always heated from below rather than from the sides?

This is due to the type of heat transfer which takes place. In a liquid (or a fluid in general), heat is transferred by convection, in which the BOTTOM part of the liquid gets heated, becomes less dense, moves upwards and is replaced by cold and denser liquid from the top. This is why a liquid is heated from below. By the way, water is a poor conductor of heat, which means that if heated at the top, no convection would take place and little conduction would take place meaning that the whole of the liquid would not become hot. Cold denser water would remain at the bottom and hot less dense water at the top.

Does liquid float on top of water?

It depends what liquid it is.

What is the curve at a liquid?

The curve at the top of a liquid is the meniscus

What determines which solvent is on the upper layer and which is on the lower layer in an immiscible liquid?

the less dense layer is on top and the more dense layer is below.

How do the plates in the earths crust move?

The plates float on top of a liquid rock just below the earth's crust. :) $m!/ey G!r/

What occurs during boiling?

An object (such as a stove top), transfers energy in the form of heat to the layer of liquid just above it through conduction. Convection then forces the heated liquid to rise, thereby heating more of the liquid and forcing the cooler liquid to replace it at the bottom. These convective currents are responsible for the roiling action found in a boiling substance.

What will an object do if it is less dense than the liquid it is in?

It will float on top of the liquid.

Why not fill a graduated cylinder to the top?

You might not need that much of that liquid. It is used for measuring out certain amounts of liquid. That is why it is graduated. The graduations usually stop a centimeter or more below the top, so filling it past the topmost mark gives you an unknown quantity of extra liquid. Also, graduated cylinders often have a small pouring lip; if you try to fill it to the top, you'll wind out with some dribbling down the side.

What is the cause of liquid pressure?

The weight of the liquid is, plus possibly the atmospheric pressure on the top surface of the liquid.

Will the liquid on the top have the highest or the lowest density?

The floating liquid will have a lower density than the liquid it is floating on.

How do you tell which liquid will float on top of the other?

This is found out by knowing the densities of the liquids in question. The liquid with the smaller density will always be on top, while the liquid with the higher density will be at the bottom.

What is the name when liquid gets curved at the top of a glass?

The curved shape of the top of a liquid in a glass (or other) vessel is called a meniscus.

If a liquid is more dense than another liquid will it be at the top or the bottom?


Is propane a liquid?

Propane is a gas a room temperature if it is not compressed. However, if it put in a canister under high enough pressure, it will be a liquid even at room temperature. Propane is a liquid below -44 degrees F or if its compressed. Grill bottles are only fillid 80% full with liquid. so you can use the propane gas on the top of the bottle.