1. Divide the next blank page of your composition notebook into 4 quadrants.

2. Label them Biosphere, Atmosphere, Hydrosphere, Lithosphere. Leave room underneath each title.

3. Copy this under Biosphere, leaving space under HONC and making HONC all caps.

4. Write out hydrogen, oxygen, nitrogen, carbon.

5. Go to Lithosphere and write this:

6. Cross out S, O, I, and L in soil. And add what’s written below:

7. Add arrows and words to demonstrate that Si is silicon and O is oxygen.

8. Write this under Hydrosphere:

9. Write out oxygen and hydrogen under OH.

10. Write this under Atmosphere:

11. Write out oxygen and nitrogen under ON.

12. Highlight the chemical symbols for the elements that make up the biosphere, hydrosphere, atmosphere and lithosphere. You may title this page “Mnemonics: Earth Elements”