2.  Students will identify changes that can occur in the physical properties of the ingredients of solutions such as dissolving salt in water or adding lemon juice to water. 5.5 D  Students will demonstrate that some mixtures maintain physical properties of their ingredients such as iron filings and sand. 5.5 C

3.  http://www.wikihow.com/Make-Lemonade http://www.wikihow.com/Make-Lemonade

4.  A mixture is a combination of two or more different kinds of matter (solid, liquid, or gas) or substances, each of which keeps its own physical properties.

5.  Solutions are a special type of mixture.  In a solution, one substance dissolves in another.  The substances are mixed evenly and the particles are evenly distributed in a solution.

6.  Adding lemon juice and sugar to water makes a solution of lemonade.  The sugar dissolves in the water and is invisible, but you can taste both the lemon juice and the sugar in the solution.

7.  All solutions are mixtures, but not all mixtures are solutions.

8.  Because the parts of mixture are not chemically combined, the parts of a mixture can be separated by different physical means.

9.  When you mix Sulphur with iron filings, you can easily see the two solids in the mixture.  You can then use a magnet to separate the mixture.

10.  Adding salt to water makes a solution.  You can separate the solution by boiling the water which will evaporate leaving the salt behind.

11.  You can use a filter to separate a mixture of dirt and water.

12.  Mixtures are combinations of substances that keep their own physical properties.  Solutions are mixtures where the particles are spread out evenly and the separate parts cannot be seen.

13.  Students created a mixture of sand, salt, water and iron filings. To separate the mixture, which set of tools would be needed? A. Hot plate, magnet, filter paper B. Magnet and thermometer C. Magnet, filter paper, hand lens D. Hot plate, filter paper, and graduated cylinder Justify your answer by explaining how you would use each tool.