Elements, Compounds, and Mixtures


5. Recognize that there are more than 100 elements that combine in a multitude of ways to produce compounds that make up all of the living and nonliving things that we encounter.

6. Differentiate between an atom (the smallest unit of an element that maintains the characteristics of that element) and a molecule (the smallest unit of a compound that maintains the characteristics of that compound).

7. Give basic examples of elements and compounds.

Below I have listed some elements and compounds that are easy to incorporate into laboratories, and good examples to use in class when conducting a unit on Chemistry.

Elements: Oxygen, Hydrogen, Carbon, Chlorine, Magnesium, Helium, etc
Compounds: Table Salt, Water, Epsom Salt, sugar(sucrose, glucose)etc

8. Differentiate between mixtures and pure substances.

This Lesson Plan Incorporating Points 6,7, and 8, uses ball and stick sets to teach molecular models. This addresses, subscripts, coefficients, elements, mixtures, compounds, and pure substances.





This next lesson is a card sort addressing points 6, 7, and 8 as well and proved to be extremely successful. I let the students cut out the cards and had them sort them into elements, mixtures, and compounds. The blank cards are for the students that finish early. They can write in their own examples and sort those too.



9. Recognize that a substance (element or compound) has a melting point and a boiling point, both of which are independent of the amount of the sample.

10. Differentiate between physical changes and chemical changes.