Sugar dissolving in water is a physical change and not a chemical one. Chemical changes only occur when new substances form. Dissolving sugar in water does not cause a chemical reaction to take place. More »

A reversible change is a physical change that can be undone. A final substance can be converted back to the original substance without creating any new material. Freezing, melting, dissolving, boiling, evaporating and co... More »

In chemistry, a physical change occurs when matter is altered without modifying its basic molecular composition. Some examples of physical changes include boiling or freezing of water, chopping up wood, melting of gold o... More »

Sugar water freezes faster than salt water, because salt has more molecules than sugar. Normally, water freezes at 32°F, however, when a substance is added to the water, it lowers its freezing point. This is not because ... More »

Sugar dissolves in water because both substances are polar substances. Water dissolves the majority of substances that are polar or ionic. The fact that sugar dissolves in water is unusual because most molecular compound... More »

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Sugar water is an example of a solid-liquid solution. Sugar, a solid, is the solute; water, a liquid, is the solvent. Dissolving the solid in the liquid creates the solution. More »

Matter changes via two processes: a physical change or a chemical change. Physical changes retain the fundamental identity of a substance without modifying its composition, while chemical changes alter matter into anothe... More »