Question

jane watches her dad spread salt on their driveway. he explains that salt makes it more difficult for ice to form on a surface. jane wonders what other effects salt might have on water. she has the following supplies available:

• tap water
• salt
• a teaspoon
• a thermometer
• a hot plate
• a freezer
• a heat - safe cup

using only these supplies, which two questions can jane investigate with an experiment?

• does dissolving salt in tap water reduce the waters freezing point?
• does salt dissolve better in tap water or vinegar?
• does sugar lower tap waters freezing point more than salt does?
• does dissolving salt in tap water change the waters boiling point when heated on a hot plate?

Explanation:

Answer:

Does dissolving salt in tap water reduce the water's freezing point?
Does dissolving salt in tap water change the water's boiling point when heated on a hot plate?