SC.8.P.8.9

Students will observe and analyze visual representations. Students will sort, classify and compare their findings to known characteristics of pure substances (elements and compounds) and mixtures. Students will differentiate matter into pure substances (elements and compounds) and mixtures on a basic molecular level. Students will use hands-on card sorting to create a rule for sorting matter. The definitions of pure substance, mixture, element, and compound will be introduced.

Type: Lesson Plan

This lesson is a hands-on approach to SC.8.P.8.9 that the students enjoy and are engaged in. The main activities cover making anchor charts (teacher lead) that will assist them in completing activities that cover vocabulary and a break down of characteristics for mixtures. There are four group activities that will guide the students to an understanding of the standard outlined. This is a two-day lab that adds teacher demonstration and allows for collaborative group and student-talk sessions.

Type: Lesson Plan

This lesson will assist students in distinguishing between pure substances and mixtures. Students will be able to identify elements and compounds as examples of pure substances. Students will also be able to distinguish between homogeneous (solutions) and heterogeneous mixtures.

Type: Lesson Plan

In the cartoon, 'Popeye the Sailor Man', he ate spinach for quick energy and increased muscle power. This is aimed at what might be his favorite drink, a spinach smoothie which is an example of a heterogeneous mixture. This lesson can also be done by students in groups if more ingredients and supplies are obtained so everyone can mix up a Popeye smoothie.

Type: Lesson Plan

This lesson supports student understanding of mixtures and pure substances.

Type: Lesson Plan

Textbook definition: "Mixtures are formed simply by blending two or more substances together in some random proportion without chemically changing the individual substances in the mixture."

Mixtures can then be broken down into homogeneous and heterogeneous. A homogeneous mixture is called a solution: salt or sugar and water, air (solution of gases). These have a constant composition throughout the solution. A heterogeneous mixture would be: salt with sugar (no water), water with gasoline or oil, salt with sand. These have areas with differing compositions (you could usually see the separation of the two things).

Type: Lesson Plan

Learn the difference between pure elements, pure compounds, mixtures and solutions in this interactive tutorial.

Type: Original Student Tutorial

• Explain the concept of concentration
• Explain the effect of concentration changes on colors of solutions
• Demonstrate the effect of changing the amount of solute, or solvent, or both on the concentration of the solution
• Identify a saturated solution

Type: Video/Audio/Animation

•Use pictures and proportional reasoning to explain changes in concentration
•Draw what happens at the molecular level when compounds dissolve in water
•Identify if a compound is a salt or sugar by macroscopic observations or microscopic representations.
•Explain how using combinations of solutes changes solution characteristics or not.
•Use observations to explain ways concentration of a solute can change.
•Describe ways the formula, macroscopic observations, or microscopic representations of a compound indicates if the bonding is ionic or covalent.

Type: Virtual Manipulative

This is a worksheet of examples to distinguish between elements, compounds and mixtures and between heterogeneous and homogeneous mixtures and between colloids and suspensions.

Type: Worksheet