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When melting and freezing proceed at the same rate the system is what?
Wiki User
∙ 14y ago
in equilibrium
Wiki User
∙ 14y ago
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How does sawdust keep a ice cube from melting?
Using Saw Dust, Aluminum Foil, and Copper, It is impossible to keep an ice cube from melting, without one condition. The external ambient temperature would have to be below freezing. You could slow down the rate the cube melts, but not halt it without a continuous supply of cold air to keep the container below freezing.
Why the melting point equals the freezing point?
well water actually freezes at below 0, however at zero degrees it also begin to solidify due a phase change and also the strengthening in intermolecular forces between the stoms in water. if you want understand further look up the heating curve of waterIf ice is heated, after 0 d C, it starts to melt. If water ice is kept in a refrigerator, after crossing 0 d C, it freezes. That is why, the freezing and melting point of water is same.
Freezing point depression of a solvent resulting from the introduction of a solute?
Yes...With the introduction of a solute, a solvent's freezing point will go down. The most simple example is during the winter. When people are putting salt on the roads and sidewalks, what that does is lower the ice's freezing point, meaning it will have to be colder before the ice freezes. So, if it's 31 degrees outside, that's cold enough for ice to form, but if you put salt down, the salt will mix with the water trying to freeze and lower it's freezing point to, let's just choose a number, 26 degrees. Since it is not 26 degrees out, the ice will not be able to form. Then the freezing rate is zero, and the melting rate does not change, so eventually all the ice will melt because a solute was introduced to cause freezing point depression.
Does salt make ice melt faster?
Salt causes ice to melt faster because it lowers the freezing point of ice, which means it has to be colder than 0o Celsius for the ice to remain frozen. However, it is not only salt that causes ice to melt faster. Adding anything which will dissolve in water (for example, sugar or baking soda) would also make ice melt faster. This is because when water contains impurities, its vapor pressure is lower, and so it freezes at a lower temperature and boils at a higher temperature.
Factors affecting melting point?
Answerwhat factors affect the melting point?1) Any impurity in a sample will lower the melting point, even if the impurity melts at a higher temperature.2) An impurity will cause the sample to melt over a wider range.
Discusion for does salt affect the melting rate of ice?
Salt lower the freezing point of ice.
Where can I find information online on how ice melts?
When the rate of freezing is the same as the rate of melting, the amount of ice and the amount of water won't change on average (although there are short-term fluctuations at the surface of the ice). The ice and water are said to be in dynamic equilibrium with each other. The balance between freezing and melting can be maintained at 0C, the melting point of water, unless conditions change in a way that favors one of the processes over the other.
How can salt melt ice?
The freezing point of water is 0 degrees Centigrade (32 degrees Fahrenheit). More accurately, 0 degrees is the point at which water is melting at the same rate it is freezing, creating a balance. At 0 degrees, water molecules are moving very slowly, and a solid begins to form out of the water, which is ice. When the water has reached an equilibrium at 0 degrees, the ice, undisturbed, will remain ice. If any foreign substance is added to the ice like salt, the water molecules can't attach to form ice as quickly, and so the freezing point (or ice formation rate) is lowered, while the melting rate is unaffected. So ice is forming less quickly, with the salt disturbing the process, and melting is continuing. Because of the lower freezing point, the rate of melting has continued, while the rate of freezing has slowed. So water begins melting before it can form more ice.Any foreign substance can disturb the equilibrium of melting and freezing water molecules at 0 degrees Centigrade. Alcohol and sugar, among many other common substances, will have the same affect. Salt is used to help melt ice on roadways because it is cheap and abundant.
Does salt make boiling water decrease?
No, it increases the boiling point. becomes lower. Let's look at why a salt water solution has a freezing point below zero, and how you can use this fact to make ice cream!At the right is a container of water with an ice cube in it. The water and ice are at 0°C, which is the melting point of ice and the freezing point of water.Molecules of ice are constantly escaping into the water (melting), and molecules of water are being captured on the surface of the ice (freezing).When the rate of freezing is the same as the rate of melting, the amount of ice and the amount of water won't change. The ice and water are said to be in dynamic equilibrium with each other. The ice is melting, and the water is freezing, but both are occurring at the same rate, so there is no net change in either quantity.This balance will be maintained as long as the water stays at 0°C, or unless something happens to favour one of the processes over the other.Here is the same container, but where the water temperature is -10°C.The molecules of water are moving more slowly, because they contain less heat. These slower-moving water molecules are more easily captured by the ice, and freezing occurs at a greater rate than melting.Because there more water molecules being captured by the ice (being frozen) than there are ice molecules turni water, the net result is that the amount of water decreases, and more freezing is happening than melting, the water eventually all turns to ice.This time we've warmed the water to 10°C.Now the water of the ice, so not very many of them freeze. Freezing occurs at a slower rate than melting.
What happens when a glaciers rate of melting is greater than its rate of movement?
An ice front recedes when a glaciers rate of melting is greater than its rate of movement. It is the end of the glacier.
Why doesnt ice melt quickly when you add salt?
Adding salt to a ice/water mix causes a temperature drop that slows the melting rate and increases the freezing rate. The net result is that ice melts more and more slowly after the initial addition of salt. Adding salt, or any foreign substance to the water upsets the balance between freezing and melting. Fewer water molecules reach the surface of the ice in a given time, so water freezes more slowly
Does food coloring affect the freezing rate of water?
No food coloring does not effect the freezing rate.
What are some examples where the salt lowers the temperature of the substance?
At the right is a container of water with an ice cube in it. The water and ice are at 0°C, which is the melting point of ice and the freezing point of water.Molecules of ice are constantly escaping into the water (melting), and molecules of water are being captured on the surface of the ice (freezing).When the rate of freezing is the same as the rate of melting, the amount of ice and the amount of water won't change. The ice and water are said to be in dynamic equilibrium with each other. The ice is melting, and the water is freezing, but both are occurring at the same rate, so there is no net change in either quantity.This balance will be maintained as long as the water stays at 0°C, or unless something happens to favour one of the processes over the other.Here is the same container, but where the water temperature is -10°C.The molecules of water are moving more slowly, because they contain less heat. These slower-moving water molecules are more easily captured by the ice, and freezing occurs at a greater rate than melting.Because there are more water molecules being captured by the ice (being frozen) than there are ice molecules turning to water, the net result is that the amount of water decreases, and the amount of ice increases.Since more freezing is happening than melting, the water eventually all turns to iceThis time we've warmed the water to 10°C.Now the water molecules are moving more quickly, because they contain much more heat. These faster-moving molecules can't easily be captured by the surface of the ice, so not very many of them freeze. Freezing occurs at a slower rate than melting.Because there are fewer water molecules being captured by the ice (being frozen) than there are ice molecules turning to water, the net result is that the amount of water increases, and the amount of ice decreases.Since more melting is happening than freezing, the ice eventually all turns to water.
When can glaciers form?
Glaciers form when the rate of snow fall exceeds the rate of melting.
Factors affecting ice melting?
The main factors affecting ice melting are temperature, sunlight intensity, and air or water movement. Higher temperatures increase the rate of melting, while sunlight accelerates this process by providing additional energy. Air or water movement can also play a role by causing the ice to melt faster due to increased heat transfer.
What is the constant in a experiment on melting rate of ice?
temperature
How does salt increase the melting rate of water?
When salt is introduced to water, it creates an endothermic reaction. This reaction creates heat, therefore speeding up the melting rate.
