The initial observation was the officials sprinkle salt only on roads that are icy . The question was what effect does salt have on the ice? Hypothesis was formulated, salt water will melt ice cube faster than the pure water because salt lowers the freezing point of ice in salt water. The prediction was ice cube melts faster in salt water than pure water.
The following was the procedure of this experiment was: fill out 100mL water into each 250mL empty beaker, add 0.5grams of salt to one of the beakers, dissolve all the salt to make salt water, add one ice cube to each beaker, adding a drop of food color to each of the beaker, wait for the observation, count the time required for the ice to melt with a chronometer, and measure the temperature
The following was the procedure of this experiment was: fill out 100mL water into each 250mL empty beaker, add 0.5grams of salt to one of the beakers, dissolve all the salt to make salt water, add one ice cube to each beaker, adding a drop of food color to each of the beaker, wait for the observation, count the time required for the ice to melt with a chronometer, and measure the temperature