That turns out to be surprisingly difficult, not least because the statement “hot water freezes faster than cold” is ill-defined. In a recent paper, Jeng suggests a more precise wording (arXiv.org/abs/physics/0512262v1): “There exists a set of initial parameters, and a pair of tempera...
Why does red dye diffuse faster than blue dye? Why apple remains firm on the outside but mushy soft on the inside when heated with water? Why does our skin remain red after a bad sunburn? Why do plant leaves normally appear green? Why doesn't negative staining use Gram'...
Why does water boil at a higher temperature than butter, which is non-polar? Why is slow distillation better than fast distillation? Why do liquids have a vapor pressure? What effect does outside pressure have on the boiling point of water? When using a gas burner, what is used to...
Gelatin crystal need to be hydrated in lukewarm water or other warm liquids (like milk or juices) so the edges of crystal absorb water. Keep stirring at regular intervals until dissolved. If you mix gelatin in hot liquid directly, the waterwill notreach the centre of crystal and the crystal...
If you've never eaten it (although you probably have), porridge is a type of food served for breakfast. It is usually a type of grain, like rice or oat (燕麦), mixed with either milk or water, and often heated up. It is often thicker than liquid, but not s...
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If you've never eaten it (although you probably have) porridge is a type of food served for breakfast. It is usually a type of grain, like rice or oat (燕麦), mixed with either milk or water, and often heated up. It is often thicker than liquid, but not so...
Why do methylated spirits evaporate faster than water? Why is NaI in acetone used as a solvent for SN2 reactions and AgNO3 for SN1 reactions? Why is water considered a universal solvent? Why would ethyl alcohol not be a good solvent to use with water in an extraction? O...
Why does sugar dissolve well in water? Why will milk curdle if you mix it with orange juice? Do colored ice cubes melt faster than ice cubes with no added colorings? Explain your answer. Why doesn't water have any calories? Why does the phase change take lon...
How does the purity of the substance affect the melting and boil Determine the resulting color of a solution added with iodine reagent if carbohydrate (starch) is present and if not. Student A carried out an experiment to test for the pre...