The solid form of water is ice, why can ice float on the water? b

The water is running and turns to ice when you put it in the freezer. Water and ice are both water, and they exist in different forms. After the water freezes into ice, the mass is still the same, but after the water freezes into ice, it can float on the water, what is the principle that causes it to float on the water?

Let's take a look at it together.

1. Physical principles

Why does the ice cube float on the water, according to the knowledge of physics, the ice cube will float on the water, then it must be because the ice cube is less dense than water, so it does not sink to the bottom in the water. Then some people will definitely ask, obviously ice is a solid form of water, so how can it be less dense than water? The reason is that when water freezes, the volume is larger than that of water, which violates the principle of "thermal expansion and cold contraction"!

2. Low density

The reason why ice is less dense than water is that water or ice does not exist in the form of a single water molecule, but several water molecules are fused together by hydrogen bonds to form clusters of water molecules. In liquid water, the arrangement of water molecule clusters is a planar structure, the space utilization rate is high, and the gap between molecules is small, so the density is relatively high! When water freezes, the clusters of water molecules become tetrahedral three-dimensional structures, and the voids are much larger than those of water, so the density becomes correspondingly smaller.

3. Buoyancy and gravitational force

The reason for ice floes is due to its density and the complex relationship between buoyancy and gravity.

This is because ice is less dense than water, and according to the relationship between density and buoyancy in physics, ice will float on the surface of the water without sinking.

Although ice is solid, it is composed of water, which expands and contracts in heat and cold, and its mass does not change, and its volume increases, so its density is smaller than that of water, so it can float on the surface of water.

Because the density of ice is very low, with an average gram cubic per centimeter, since it is less dense than water, ice can float on water.

Because ice is less dense than water, it is known that the relationship between density and buoyancy is that ice floats on the surface of the water.

Because water freezes and is less buoyant and denser than water, it can float on the surface of the water and is also affected by gravity.

Because ice is less dense than water, and because it is buoyant and heavier than gravity, it can float on the water.

Because the water may no longer be affected by gravity after it forms ice, the ice floating on the surface of the water will slowly melt into water.

Ice clings to the surface of the water because it is less dense than water, and many things are lighter than water and will be suspended on the surface of the water.

In winter, the rivers in the north are often covered with very thick ice, and even people and cars can pass on them. But in the water below the ice, fish and shrimp can still survive. Spring is coming, and the river is slowly flowing with the ice that has not yet completely melted.

These ice cubes are always floating on the water.

Why does ice always float on the water? This is because the volume of water grows by about one-tenth in the process of forming ice, so its specific gravity becomes smaller, and the same volume of ice is lighter than water, so the ice floats on the surface of the water.

Generally speaking, the property of general substances is thermal expansion and cold contraction, but water freezing is "cold expansion", and iced water is "heat contraction". In winter, we have to bandage the water pipes, that's the reason. If we don't wrap up the exposed water pipes, the water pipes will freeze and crack when the temperature drops below 0.

This is also due to the fact that the water freezes and grows in size, creating a huge force that bursts the water pipes.

If the water is above 4, it still follows the law of thermal expansion and cold contraction, and abnormal expansion occurs from below 4, that is, between 4 and 0. Water at 4 is the smallest in volume and the highest in density.

Thus the density of ice is slightly less than that of water. So it can float on the water.

Ice is less dense than water (about 90% of what water looks like).

In other words, 1 cubic meter of water has 1 ton, 1 cubic meter of ice is less than 1 ton (about a ton), and the same volume of ice and water is heavier.

Ice is larger for the same weight of ice and water.

So the ice floats on the water.

Something that is as small as water but lighter than water can float on the surface of the water.

Because the buoyancy in the water is equal to the gravitational force of the water being discharged, then before the ice cube is completely sunk, the weight of the water discharged by the ice cube has reached the weight of the ice cube itself, that is, the buoyancy force of the ice cube is equal to the gravitational force of the ice cube itself, so the ice floats on the water.

Ice is a solid of water, and water is a liquid. Matter has three states, solid, liquid, and gas. The solid of water is ice, water is usually liquid, and water vapor is gaseous water.

In general, there are three states of matter, such as the three states of water are ice, water, and water vapor, which are solid, liquid, and gas, respectively. Of course, there are two other forms of matter that exist called plasma states and super-solids. Substances in the plasma state are called plasmas, and substances in super-solid states are called supersolids.

The radiation state of matter does not include the radiation of matter particles, which in this case refers to electromagnetic radiation. It takes electromagnetic energy as its basic manifestation, and its main characteristics are the propagation of energy and the interaction of participating in matter. One is to change the state of motion of matter, that is, to change the kinetic energy of matter, such as the thermal motion of molecules.

The second is to change the energy state of matter, such as the energy of atoms. In the interaction between electromagnetic energy and matter, we can also find that electromagnetic energy can be absorbed by matter, and it can also be refracted and reflected. In addition to the above properties, high-energy electromagnetic energy can also be decomposed into positive and antimatter pairs, and the positive and antimatter encounters can also be annihilated at the same time and converted into electromagnetic energy.

In general, there are three states of matter, such as the three states of water are ice, water, and water vapor, which are solid, liquid, and gas, respectively. Of course, there are two other forms of matter that exist called plasma states and super-solids. Substances in the plasma state are called plasmas, and substances in super-solid states are called supersolids.

Water is a liquid, and ice is a solid formed when water solidifies. Ice in solid form, water in liquid form, water vapor in gas form.

Ice is a solid of water. Water is liquid, and when water freezes, it is ice.

The reason why ice floats on the surface of the water is that the water above 4 still follows the law of thermal expansion and cold contraction, and abnormal expansion occurs from below 4, that is, between 4 and 0. Water at 4 is the smallest in volume and the highest in density.

Thus the density of ice is slightly less than that of water. So it can float on the water.

Ice is a colorless and transparent solid, a product formed by liquid solidification, condensed by a freezing environment, and liquefied and dissolved at high temperatures, which is a normal natural phenomenon that can be formed naturally or artificially.

The molecules are mainly bonded by hydrogen, but there are also van der Waals forces, and the lattice structure is generally hexagonal, which is less dense than water. However, there can also be other lattice structures at different pressures.

Ice is formed by water, so why can ice float on the water? It's a magical material! It can have a universe in three forms: solid, liquid, and gaseous.

Let's talk about why ice is not suspended in water, does not sink on the surface, but floats in water? I'm just saying that there are three states for water. When liquid water is in an environment where the temperature is below 0 degrees, it will solidify into ice.

From a chemical point of view, the composition of ice and water is the same, they are the same substance. Since it is the same substance, why did they not merge into one, but the ice floated on the water?

We often have very light things to float on the water, such as feathers, twigs, foam, and other items. Common sense tells us that we can float more than water. These things feel very light, so they can float.

Isn't it just water? How do you determine if one thing is lighter than another? For example, if you want to judge water and ice, you can't judge in the case of different volumes.

Who is not just ice and water, this is the use of the noun "density" in physics. Density is the mass of an object that is made up of substances divided by its volume of these substances. For example, gold has a density of 19,300 kilograms per cubic meter, which means that the mass of 1 cubic meter is 19,300 kilograms.

By looking at the density table: the density of water is 1000 kg per cubic meter, while the density of ice is 900 kg cubic meter. Therefore, the density of ice is less than that of water.

From this, it can be seen that the density of ice is less than that of water, so ice can float on the surface of the water. Some would say that the huge wheels of steel can also float in water. Yes, steel steel swims by the sea, it will definitely float on the sea.

But thinking about it, steel giant wheels are not solid. If the mass of the entire volume of the ship is removed, the mass of the ship will be less than the density of seawater. That's for sure, otherwise it wouldn't float in the sea.

In fact, we have already seen the phenomenon of ice sinking into the bottom of the liquid. In life or in movies and TV series, we are very common with wine on the rocks. At this point, the ice usually sinks at the bottom of the cup.

Why? Or use density to explain this phenomenon, i.e. the density of ice is greater than that of wine, so it will sink.

The reason is simple, because ice is much less dense than water, so they float on water.

Because in the process of forming ice, the volume of water will become a little larger, and the corresponding density will become smaller, and the density of ice is less than that of water, and it can float on the surface of the water.

Because ice is, after all, a small piece, while water is a large area, the more mass it has, the greater the buoyancy, and the natural ice cubes will float on the water.

Ice is a solid molecule of water, so why can it float on the surface of the water?

That's a good question. In water, objects with a density less than water will float on the water, while solids are often denser than water, so they should sink into the water, but why can the ice mold pants float on the surface of the water, and its molecules are the same as water?

This is because when the water freezes, the volume increases, and according to the formula that the density is equal to the mass divided by the volume, the density of the water that becomes ice becomes smaller when the mass remains the same, so the ice floats on the surface of the water.

So, why does ice get bigger? This is because as the water cools, it begins to form a lattice structure, and the molecules will be tightly packed together to form a neat, orderly repeating pattern. However, the same charged molecules repel each other, the crystal lattice is slightly larger, and the volume of the ice expands slightly.

When the ice floats on the water.

The volume of the liquid should be equal to the volume of the original water + the volume of the water drained by ice, and the volume after melting should be equal to the volume of the original water + the volume of the water and turned into water, and the two are exactly equal. The water surface remains the same.

When the ice floats on salt water.

The volume of the liquid should be equal to the volume of the original water + the volume of the ice to drain the brine, and the volume after melting is equal to the volume of the original water + the volume of the water, because the density of the brine is greater than that of water, the mass of the ice does not change before and after melting, so the greater the density, the smaller the volume, so the volume of the discharged brine is less than the volume of the water, therefore, the water surface rises (regardless of the situation that the volume is less than the sum of the two after the salt water is mixed with water).

3 When ice floats on a liquid.

The volume of the liquid should be equal to the volume of the original water + the volume of the liquid discharged by ice, and the volume after melting is equal to the volume of the original water + the volume of water and turned into water, according to the analysis in 2, the density of the liquid is less than that of water, so the volume of the discharged water is larger, so the liquid level will drop.

There are bubbles floating on the surface of the water inside the ice.

The volume of the liquid should be equal to the volume of the original water + the volume of the water drained by ice (ignoring the mass of bubbles), and the volume after melting should be equal to the volume of the original water + the volume of water and turned into water, and the two do not change.

When there are grains of sand floating on the surface of the ice.

The volume of the liquid should be equal to the volume of the original water + the volume of (ice + sand grains) to drain the water, and after melting, the volume is equal to the volume of the original water + and the volume of water + the volume of sand grains, obviously the volume of sand particles discharged into water is greater than the volume of sand particles (the density of sand particles is greater than that of water), therefore, the water surface will fall.

If the same volume of water is compared with an object, the weight of the object is lighter than that of the water and it will float on the surface of the water, and the weight of the object heavier than the water will sink underwater. When a substance has both solid and liquid forms, in general, the same volume of solid is heavier than liquid, but the opposite is true for water.

The difference between the two is that water vapor is gaseous, colorless, odorless, invisible and untouchable with the naked eye, relatively light in weight, and can be compressed, without a fixed volume; Whereas, water mist is liquid, which is composed of countless small droplets, which can be observed and touched with the naked eye, weighs more than water vapor, and cannot be compressed, and has a fixed volume.

The similarity between water and water vapor is that they are both made up of water molecules, and both are colorless, odorless, transparent, flowing substances, both occupy space, and have a certain weight.

2. The difference between ice, water, and water vapor.

1. Different forms

Ice: Ice is solid.

Water: Water is in a liquid state.

Water vapor: Water vapor is in a gaseous state.

2. The density is different

Ice: The density of ice is 900kgm.

Water: The density of water is 10 kg m.

Water Vapor: The density of water vapor is.

3. The application is different

Ice: Ice should be used in the fields of domestic and industrial cooling.

Water: Water is mainly used in solvents, life support, electronics industry and other fields.

Water vapor: Water vapor is used in life, petrochemical industry, fire fighting and other fields.

Water is a substance necessary for the normal metabolism of the human body, and water has many important functions in the body

1. Water is an important component of cell protoplasm.

2. Water acts as a solvent in the body to dissolve a variety of electrolytes.

3. Water plays a role in transporting nutrients, metabolic wastes and endocrine substances (such as hormones) in the body.

4. Water has high thermal conductivity and specific heat, which can be used as a "heat carrier" to transfer heat between the body and the surface, which helps the human body to regulate body temperature.