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Science · 10th Grade
Why the Trends Happen
Two competing forces explain every periodic trend.
How to use it
Every trend comes from nuclear charge versus shielding. Learn the cause, not the four arrows.
Free · print-ready PDF · US Letter and A4
- Grade
- 10th Grade
- Ages
- 15–16
- Subject
- Science
- Pages
- 1
The rest of the 10th Grade wall
49 more posters, all free to print — 11 of them here.
Ionic BondingElectrons handed over, not shared — and the properties that follow.Covalent BondingElectrons shared between two non-metals, and why the properties are so different.Balancing EquationsConservation of mass, enforced with coefficients — never with subscripts.The Five Reaction TypesRecognising the pattern tells you what the products will be.The MoleA counting unit for atoms — and the three formulas that use it.Acids and BasesThe pH scale, what it measures, and the reaction that cancels both.The Gas LawsThree relationships between pressure, volume and temperature.Bonding & ReactionsIonic vs covalent bonding, valence electrons and the five reaction types.Electron ConfigurationWhere the electrons actually sit, and why the periodic table is shaped as it is.Limiting ReactantsWhich ingredient runs out first, and why that decides the yield.Energy in ReactionsExothermic and endothermic, and the bond-energy explanation.