Instructions

Why is frozen water (a solid) less dense than liquid water? 15. Explain how this emergent property of water is important to marine life LIKE DISSOLVES LIKE? 16. a. Why does NaCl dissolve in an aqueous solution? b. Does NaCl dissolve in petroleum ether? Explain your answer. 17. Why is it essential for compounds like salt (and glucose) to be soluble in the water found in our body? 18. a. Does salad oil dissolve in water? Explain your answer. b. Does salad oil dissolve in petroleum ether? Explain your answer. DOES WATER BOIL SOONER IF SALT IS ADDED? (DEMO) 19. Does the addition of salt make the water boil faster or slower? Why? What does salt do to the boiling point of water?

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