Usually true, but there are many exceptions-- Water for example turns to ice which has a lower density (gets bigger). Water in fact is most dense at 40C. So from this temperature it gets "bigger" both ways. Rubber gets smaller when heated. This fact give rubber many of it's properties. A squealing fan belt in you car stops squealing when it gets warm because it shrinks.
Lets model your situation with every other variable kept constant. Basically, in this world, ice sinks water. We need to model for 2 bodies of water. Shallow bodies, like lakes and deep bodies like oceans. I'm going to ignore active volcanic activity. I'm also going to assume cases where the ambient temperature is sufficiently low enough to form ice. In our world, ice acts as incredibly good insulating layer(not much movement on the molecular level that allows the conduction of heat) due to its hydrogen and covalant bonding. Basically, it forms a packed, but evenly spaced, structure in which little moves. Its low density also inhibits the conduction of heat as nearby molecules are held at "arms length". In the case of a shallow body of water in the case of this world where ice sinks, we can also assume that geothermal and pressure heating due to depth is negligible. Hence, lacking this highly insulating layer, the warm water which rises would cool rapidly till freezing point, at which it would sink. And since cold water stays at the bottom, the ice would be melting very slowly. Therefore, ice builds from the bottom up and at a much faster rate than it would in our world. In a deeper body of water, its slightly harder to model due to geothermal heating. Very deep bodies of water might be able to retain some liquid water. In the case above, the ice sinks and it remains cold wherever it sinks to. However, when pressure and geothermal heating build up, the ice might be able to melt as it decends. In those places, there would be ice falling in the water, but there would not be any liquid ice floating on the surface. You basically get underwater snow. Fine snow if its not that cold/turbulent and a blizzard if it is. Lastly, im going to model your cup of soft drinks in which they love overfilling with ice, depriving you of the precious drink you pay for(at least over here). So here, your ice will stay at the bottom, which is already cold. Then since the top is warm and does not circulate down, it stays warm at the top but cold at the bottom. Hence, if u drink from the bottom, it will be colder than usual. But the average temperature will be higher. Also, assuming the same drinking rate, you will have more ice remaining and more of an incentive to ask for refunds, which you will not get anyway.
no but you have to answer to your teacher. Edit : Yes, there is a small amount of ice in the Earth's atmosphere in the form of high altitude clouds. It's cold enough for water to become little ice crystals.
It depends on the type of pain and location in the body. Muscular pain responds well to warm Epson salt baths and head pain responds well to cold compress. Ice helps arthritis; warm compress or heating pad helps muscular pain.
Combining salt and ice will make very cold, salty water, which is quite uncomfortable if you get it on your skin. This could be described as a burning cold. Actually, the answer is yes. The chemical reaction from the salt melting the ice will cause a rash to appear on your skin. If you put salt on your hand then place an ice cube on the salt, the resulting chemical reaction will burn you.
Ice melts the fastest in warm water compared to cold water, cold air, and warm air. Warm water transfers heat more efficiently to the ice, causing it to melt more quickly.
Cold ocean water is more dense than warm ocean water because cold water molecules are packed more closely together, resulting in a higher density. This is why cold water tends to sink below warm water in the ocean.
Ice expands as it warms. At 4 degrees C water achieves it's maximum density. Warm ice is less dense than cold ice. Any amount of liquid water would mean that the ice has gotten as warm as it can get and that it is in equilibrium with the liquid water. The ice, being crystalline, has a discreet melting point so it is either water or it is warm ice. If the ice is wet, it is less dense than ice that is cold enough that the water in contact with it freezes. That doesn't mean that warm ice must be wet ice. If the water is removed, the dry ice will be the same density as the wet ice of the same temperature. Having said that, it is possible that you want to contrast the density of frozen carbon dioxide to water ice. * Water ice has a density of 0.92 g/ml * Dry ice (CO2) has a density range from 1.4 to 1.6 g/ml
Cold water.
Lightest warm water is steam, while the lightest cold water is ice.
It Melt Bcuz The water is Warm So it Melts The Ice && Then The Coldness Make the Warm Water Cold
Yes, density does have an effect on ice. Ice is less dense than liquid water, which is why ice floats on water. This property of ice is important for the survival of aquatic life in cold environments, as it helps insulate the water below the ice.
freeze water as ice cubes then put it on water and it floats Liquid fresh water floats on salt water Warm water floats on cold water (water's greatest density is when it is 4 degrees Celsius).
melt
No. Use warm water. I can't remember what cold water or ice does but it makes it worse somehow.
Yes.
its according to what other temperature of water you are comparing it to. water is densest at 4 degrees C so water that is colder then 4 degrees C is technically less dense then water at 4C. in that case the warmer water is denser. but if you mean warm water to be >4C and cold water to be colder then warm water, but not below 4C, then cold water is more dense then warm water. but the question you are probably trying to get answered would have an answer of cold is denser