TutorialsLesson 4“A Dissolving Situation”

Vocabulary

• 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

What is a mixture?

• 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 solution?

• 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?

Sweet Water Investigation

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?

Sweet Water Investigation

• 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?

Mixtures Equation Card Sort

Evaluate!