Sugar cubes don't actually "dissolve" in water in the sense that a salt might. Sugar breaks apart into individual non-polar sugar molecules. (relative polarity hinges on the specific species of sugar) Sugar makes a homogeneous mixture in water. Adding salt to the equation makes no real difference in the solubility of sugar in water, sugar still refuses to dissociate into ions so it remains sugar, just fragmented at the molecular level.
Sugar cubes (and salt, and many other materials) dissolve in water because water is a powerful solvent. Properties of water molecules cause them to break down the crystalline structure of a sugar cube.
Polar MoleculesWater molecules are polar, meaning that one part of the molecule has a slightly positive electric charge, and one part has a slightly negative electric charge. Sucrose molecules also have a part that carries a slight negative charge.
Crystalline BondsThe bonds that hold a sugar cube together in a crystalline structure are fairly weak and rely on the sugar molecules being in contact with each other.
Water Breaks the Crystalline BondsThe attraction between the negatively charged part of the sugar cube and the positively charged part of the surrounding water molecules pulls the sucrose away from the crystalline structure.
Water Surrounds the SucroseThe negatively charged part of the sucrose molecule pulls in water molecules from all directions. They form a shell around the sucrose, preventing it from rejoining the crystalline structure. This layer of water molecules is called the hydration shell.
Removing the WaterWhen the water is removed, through evaporation for example, the sucrose molecules come into contact with each other again and reform their crystalline bonds. They are not changed chemically in any way by the process of absorption.
Read more: Why do sugar cubes dissolve in water? | Answerbag http://www.answerbag.com/q_view/2035892#ixzz1RgABdw00
Sugar is highly soluble in water. When you crushed a sugar cube in to powder, you have increased the surface area to a very large degree as compared to the cube. The powder when mixed with water, the large surface area of the sugar crystals come in contact with water and get in solution.
First off... the fact that the sugar is in a cube makes no difference. If its were a ball or powdered sugar it would dissolve by the same process..What happens is that both water and sugar are polar compounds, Polar means they have areas on the surface of their modules that are positive and negative due to the arrangement of the atoms in the molecules. Just like magnets have a north and south pole. This keeps the water in liquid form and the dry sugar in crystals
When water surrounds a chunk of sugar (many molecules stuck together) the polar forces on each substance attract each other. The attraction of sugar for water molecules is stronger that the attraction of sugar for other sugar molecules. Essentially like a group of children will split away from a dull group of kids to join a bunch that seems to be having more fun.
It works the other way too. When a sugar solution starts to dry out the sugar molecules lose enough of there water molecule "friends" that they have to associate with other sugar molecules . The sugar molecules polar forces line then bace up into sugar crystals.
---- ====== ====== it doesnt desolve you just cant see it ---- ====== ====== it doesnt desolve you just cant see it
I think that after a while they will just dissolve; but that is just what I have learned already.
salt water
Yes
Let's imagine the following objects first: Sugar cubes are solid blocks, each with a comparatively larger volume. Granulated sugar is fine and particulate, and each grain has a very small volume. It is only logical that when comparing one block of sugar to one grain of sugar, that the grain dissolves faster because it has a smaller volume (less to dissolve), and the surface area to volume ratio is much higher.
Granulated sugar has more surface area exposed to the coffee, therefore it will dissolve faster.
The amount of time and speed it takes to dissolve sugar in water and dissolve salt in water depends on the amounts of salt and sugar, the amount of water, and the temperature of the water. The approximate time needed to dissolve the sugar and salt in water is 25 minutes.
Sugar can dissolve in water.
More sugar can dissolve in water than salt.
water!
Yes
Hot water
I never heard of crushed water. Crushed ice (which sugar cubes don't dissolve in at all), but not crushed water. Let's see here: sugar dissolves faster in hot water than cold. And crushed sugar cubes, because the sugar has more surface area, dissolve faster than cold ones.
They will dissolve much quicker in warm or hot water than in cold water.
sugar cubes dissolve faster than limestone
Liquid
Seconds in hot water. The colder the water the longer. If you keep adding sugar to a glass of water and stir as you go, you will reach a point where the water will no longer melt the sugar.
Let's imagine the following objects first: Sugar cubes are solid blocks, each with a comparatively larger volume. Granulated sugar is fine and particulate, and each grain has a very small volume. It is only logical that when comparing one block of sugar to one grain of sugar, that the grain dissolves faster because it has a smaller volume (less to dissolve), and the surface area to volume ratio is much higher.
Probably because the surface area of the sugar granules is larger, more sugar molecules are exposes to water at once.
1 lime 1 tsp sugar Water Ice cubes Measure the sugar, and dissolve in 1tsp boiling water. Pour into a glass. Add the lime, and fill up the rest of the glass with water, and drop in the ice cubes, but they are not really needed.
Assuming that bottled water is purer than tap water, has less ions etc, and that both volumes are the same, then sugar cubes would dissolve faster in bottled water. Thermodynamically there is less entropy in tap water than there is in purer water, so hydrogen bonding with sugar (which is polar) would be more favoured in bottled water.