Lesson 14 Make-up lesson

Mass, Volume, and Dissolving

Use these internet cites to help you answer the questions below.

http://www.chemtutor.com/solution.htm#liquid

http://www.chemtutor.com/solution.htm#solubility

http://www.chemtutor.com/solution.htm#solid

1. What do you think happens to the mass and volume of a solute and a solvent when these substances are mixed together to form a solution? Explain your answer.

2. Test your idea with two household substances around your home.

3. Design an investigation as to whether a change in mass occurs when sodium chloride (table salt) dissolves in water.

4. What happens to the mass of one type of matter when it is dissolved in another type of matter (for example, when a solid is dissolved in a liquid?)

5. How do your results compare with what you already know about what happens to the mass and volume of matter during a phase change?