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59 resources

  • gameFree starter play

    Pt Paddle

    Play the Platinum Arena: answer chemistry questions to grow your molecular paddle, then steer it into the ball’s path. Keyboard, mouse, and touch controls.

  • gameFull access · preview available

    Run the Table

    Beat the clock filling in the periodic table from memory. Blank one and it lights up red so you know what to drill.

  • gameFree starter play

    Acid Boy & Base Girl

    Two heroes. Five rooms. Read the pH scale, test each tile with the right hero, and neutralize a solution to open the way through.

  • gameFull access · preview available

    Molecule Hunter

    Hidden-fleet deduction. Hide your molecules; hunt the opponent's. Every shot is gated by a chemistry question.

  • gameFull access · preview available

    Capture the Nucleus

    Hidden-rank tactics. 12 ranks map to periodic-table groups: Spy beats Marshal, Miner defuses Bomb. Every attack is a question.

  • gameFull access · preview available

    Storm the Castle

    Turn-based chemistry siege against Cobalt or a friend. Answer to muster an army, commit your line, storm the keep by the unit counter-triangle.

  • guideFree5 min read

    Get Ahead in Chemistry Before Class Starts

    The best head start for high-school chemistry: learn the periodic table before class. Ten minutes a day of summer games, and your kid walks in fluent.

  • guideFree10 min read

    Acids, Bases, and pH: A High School Guide

    An acid gives up a proton and a base takes one. pH is the number for how acidic a water solution is: below 7 acidic, 7 neutral at 25 °C, above 7 basic.

  • guideFree7 min read

    Chemistry Regents Curve: Raw Score for a 65

    Is there a Chemistry Regents curve? Not in the grading sense: students needed 50 of 85 raw points for a 65 at every legacy sitting since August 2024.

  • guideFree8 min read

    Chemistry Regents Reference Tables 2011/2025

    The 2011 Chemistry Reference Tables are 12 pages; the 2025 edition is 4. The edition for each exam through June 2027, what NYSED cut, and where NYSED put it.

  • guideFree12 min read

    Greenland Shark Lifespan: How Do We Know?

    Greenland sharks can live at least 272 years. Scientists put the largest at 272 to 512 from the carbon-14 in its eye and its length. How sure is that?

  • guideFree15 min read

    How Accurate Is Carbon Dating?

    Scientists can carbon-date things up to 50,000 years old, usually to a 120–200 year range at 95% confidence. How it works, its limits, famous cases.