Students will be able to develop and explain a particle-level model to describe their observations of water dissolving salt, the water evaporating, and the salt crystals re-forming. Dissolving a solid ...

Students first use a dissolving test to see how salt and sugar dissolve in water. Students then run the same dissolving test on substances A, B, and C; identify the salt and sugar; and conclude that ...

Heat can help some substances dissolve faster in water. Salt, for example, will dissolve quicker in hot water than in cold water. When a substance dissolves, it might look like it has disappeared ...

The Thermavault refrigeration unit can keep vaccines cool with a reusable salt solution. The teens who built it plan to test ...

The loss ot caloric by the use of this water was owing to the salt dissolved, which retained the heat in a latent state. The losses to be estimated for blowing off the brine were the power ...

When you mix sugar with water, the sugar dissolves to make a transparent solution. Salt is soluble in water too. Substances that do not dissolve in water are called insoluble substances.

Three teens built a salt-powered fridge to help bring vaccines and medical supplies to rural areas. The invention uses salts that pull heat from their environments when they dissolve in water.