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High School — Science

General high school reviewer: biology, chemistry, physics, and earth science.

General reviewer for Science at the high school level.

1

Biology

The cell is the basic unit of life. Know the human organ systems, photosynthesis, respiration, and genetics (dominant vs recessive traits).

2

Chemistry

Matter = element, compound, or mixture. Atoms have protons, neutrons, electrons. Balance equations by changing coefficients.

⚠️ Common Mistake

Balance chemical equations by adjusting COEFFICIENTS, never subscripts.

3

Physics & Earth Science

Speed = distance ÷ time · F = m × a

Earth science covers plate tectonics, weather, and the solar system.

4

Scientific Method

💡 Exam Hack

Order: observe → hypothesize → experiment → analyze → conclude. The independent variable is what YOU change.

📌 Quick Recap — Master These

Before your exam, make sure you can confidently explain and apply each of the following:

  • Biology
  • Chemistry
  • Physics & Earth Science
  • Scientific Method

Re-read any section above where you hesitate, then explain it aloud in your own words — if you can teach it simply, you understand it. Focus your final review on the tables, formulas, and the common-mistake warnings, since those are where most points are won or lost.