What happens to the area of ice where salt is applied? Why is salt applied to icy sidewalks or roads in the winter? What does salt do to the freezing point of water?

How can the concentration of water in a solution be decreased

What is the ratio of cornstarch to water in the graph?

Scientists are interested in investigating how limestone can be used to remediate the effects of acid rain. They collect water from a lake that has recently been exposed to acid rain. They divide the water into 10 different tanks and add different amounts of limestone to nine of the tanks. No limestone is added to one of the tanks. The pH of the water in the tanks is measured before the limestone is added and once every hour for 24 hours. (f) Identify the independent variable in this investigation. (g) Identify the dependent variable in this investigation. (h) Identify the control group in this investigation. (i) Describe one additional variable that has not been mentioned that could affect the results of the investigation. (G) Describe a modification that could be made to the investigation that would affect the results.