Grade 10 Science Exam Cheat Sheet: Chemistry, Biology, and Physics Essentials
A one-page review of the science topics most grade 10 courses cover — perfect for final exam prep.
Before you start: Grade 10 science courses vary by school, state, and country. This grade 10 science exam cheat sheet covers topics that appear in many courses. Check your own course outline and cross off anything your class didn’t cover. If your teacher allows a reference sheet, follow their rules for size and format.
Science finals cover a lot of ground. This grade 10 science exam cheat sheet condenses the essentials from chemistry, biology, and physics into a quick review.
Grade 10 Science Exam Cheat Sheet: Chemistry
- Atoms: Protons (+, nucleus), neutrons (neutral, nucleus), electrons (−, shells). Atomic number = number of protons.
- Periodic table: Rows are periods; columns are groups. Metals on the left, nonmetals on the right.
- Bonds: Ionic bonds transfer electrons (metal + nonmetal); covalent bonds share electrons (nonmetals).
- Balancing equations: Atoms are conserved — change coefficients, never subscripts.
- pH: Below 7 is acidic, 7 is neutral, above 7 is basic. Acid + base → salt + water.
| Reaction type | Pattern |
|---|---|
| Synthesis | A + B → AB |
| Decomposition | AB → A + B |
| Single displacement | A + BC → AC + B |
| Double displacement | AB + CD → AD + CB |
| Combustion | Fuel + O₂ → CO₂ + H₂O |
Biology Essentials
- Cell organelles: Nucleus (DNA), mitochondria (energy), ribosomes (proteins), cell membrane (controls entry); plant cells also have a cell wall and chloroplasts.
- Mitosis phases: Prophase, metaphase, anaphase, telophase (PMAT), then cytokinesis.
- Mitosis vs. meiosis: Mitosis makes 2 identical body cells; meiosis makes 4 genetically different sex cells.
- DNA: Bases pair A–T and C–G.
- Genetics: Dominant alleles (capital letter) mask recessive ones. Use a Punnett square to predict offspring ratios.
- Levels of organization: Cells → tissues → organs → organ systems → organism.
Physics Essentials
| Quantity | Formula | Units |
|---|---|---|
| Speed | v = d ÷ t | m/s |
| Acceleration | a = (vf − vi) ÷ t | m/s² |
| Force | F = m × a | newtons (N) |
| Weight | W = m × g (g ≈ 9.8 m/s²) | N |
| Density | ρ = m ÷ V | g/cm³ or kg/m³ |
- Light: The angle of incidence equals the angle of reflection. Refraction is the bending of light as it changes medium.
- Newton’s laws: Inertia; F = ma; every action has an equal and opposite reaction.
Exam Tips
- Always include units in calculations.
- Show your work: You can earn marks even with a wrong final answer.
- Practice diagrams: Label cells, atoms, and ray diagrams from memory.
- Use past tests: Ask your teacher for review packages or old exams.
Key Takeaways
- Check your course outline — grade 10 science varies by school.
- Chemistry: atoms, bonding, balancing equations, reaction types, and pH.
- Biology: organelles, mitosis vs. meiosis, DNA pairing, and Punnett squares.
- Physics: speed, acceleration, F = ma, and basic light behavior.
- Always show work and include units.
Frequently Asked Questions
What topics are on a grade 10 science exam?
It depends on your course, but many grade 10 science exams cover chemistry (atoms, bonding, reactions), biology (cells, genetics), and physics (motion, forces, or light). Check your course outline.
Can I bring a cheat sheet into my grade 10 science exam?
Only if your teacher allows it. If they do, follow their rules for size and format. If not, making one is still a great way to study.
How do I balance a chemical equation?
Count the atoms of each element on both sides, then change the coefficients (the numbers in front) until they match. Never change the subscripts.
What’s the difference between mitosis and meiosis?
Mitosis produces two identical body cells for growth and repair, while meiosis produces four genetically different sex cells for reproduction.
The Bottom Line
This grade 10 science exam cheat sheet gives you the core of each science in one place. Tailor it to your course, practice with past questions, and you’ll walk into your exam prepared.
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