1. TutorialsLesson 4 “A Dissolving Situation”

2. Dissolves: the physical change of a solid liquefying when added to a liquid • Mixture: a combination of two or more types of matter where each type of matter keeps its original properties and may be separated • Physical Properties: characteristics that can be observed, measured, or changed without the substance becoming a different type of matter • Solutions: the specific type of mixture where substances are dissolved in a liquid and cannot be easily separated Vocabulary

3. A mixture is a combination of two or more substances that can be easily separated by physical means. • What are some examples of mixtures that you can think of? What is a mixture?

4. A solution is a special type of mixture, In a solution, one substance dissolves in another substance. The dissolved particles are so small they cannot be seen even with the help of a microscope. Solutions are difficult to separate because the process often requires more time and effort. • Can you name some solutions? What is a solution?

5. Sweet Water Investigation

6. Sweet Water Investigation What are some physical properties of water? Candy? What happened to the candy when you stirred the water? Is it a mixture or a solution?

7. Is the sweet water and example of a mixture or a solution? • How do you know? • How could you separate the candy from the water? • How do you think the candy would look if you let the water evaporate? • Are all mixtures solutions? • Are all solutions mixtures? • What have you learned about mixtures and solutions that you didn’t know before? Sweet Water Investigation

8. Mixtures Equation Card Sort

9. Evaluate!