B Distance Learning Week 1
Identifying Changes in the Rate of Dissolution
Pellets of calcium chloride are spread on a sidewalk covered in water that is 36°C. Under which
circumstance will the calcium chloride dissolve faster?
* It rains, increasing the amount of water on the sidewalk.
Sand is sprinkled on the sidewalk.
The water cools to a temperature of 33°C.
People walking on the sidewalk crush the calcium chloride pellets.
The air pressure increases as the weather changes.
RETRY

The grooves or folds of the brain are called

Categorize them by metal, nonmetal, in periodic tableductilenon-ductilemalleableoften gain electrons easilygood conductorpoor conductorcan be liquidselements

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.