Which dissolves faster in water, salt or sugar, at a normal temperature?

You can know the answer by physically trying to resolve both but you can see that it resolves the fastest.

Chemically, the salt compound is NaCl, and H 2 O is decomposed into Na + and Cl - when added to water, forming HCl and NaOH, so reaction at high temperature is unnecessary, which causes problems.

As the water temperature rises, help the students understand that the graph shows that more sugar will dissolve in the water. It also helps to confirm that the salt's solubility increases as the water temperature rises. However, salt melting did not increase like sugar. Note: Students may ask why sugar is more soluble at higher temperatures than salt. This is not easy to explain at the molecular level of junior high school, high school, even university level. Since substances are composed of various atoms, ions, molecules, they are linked in various ways and tell students that they interact with water. Changes in temperature also affect the movement of atoms, ions or molecules of a substance and affect the interaction between water molecules and material particles.

Fact: Something soluble in sugar and water melts the ice. Like salt, sugar melts ice by reducing the melting and freezing point of water. When sugar is added to ice, it melts and interferes with water molecules. It is necessary for the water molecules to combine with the crystals of ice to freeze. Before water molecules come into contact with ice crystals, the presence of sugar requires lower temperatures. It adds two components to the solution and gives more interference to prevent water molecules from freezing. The sand gives traction and absorbs heat and melts the ice at higher temperatures than ice, thus melting it. Flour does not affect ice, it also functions as a higher temperature insulation around the ice.