The experiment bench 16 cards

Every card is a kitchen chemistry run you can do with supermarket ingredients, written with the numbers, the timings and the failure modes included.

Isometric glassware cross-section for difficulty 2: liquid height tracks difficulty and bubble count tracks run time

Marshmallows Under Vacuum: Watching Trapped Air Win

Steady hands · bench date 16 Oct 2026

Difficulty 2/5 25 min Goggles

Isometric glassware cross-section for difficulty 3: liquid height tracks difficulty and bubble count tracks run time

Separating Leaf Pigments on a Coffee Filter

Long soak · bench date 13 Oct 2026

Difficulty 3/5 50 min Goggles

Turning Copper Coins Green in Twenty Minutes

Steady hands · bench date 9 Oct 2026

Difficulty 2/5 30 min Goggles

Isometric glassware cross-section for difficulty 1: liquid height tracks difficulty and bubble count tracks run time

Mentos in Diet Cola: Counting Nucleation Sites

Open bench · bench date 6 Oct 2026

Difficulty 1/5 15 min Everyday

Yeast and Hydrogen Peroxide: Foam as a Measure of Enzyme Speed

Steady hands · bench date 2 Oct 2026

Difficulty 2/5 20 min Goggles

Rock Candy: Growing Sugar Crystals on a Seeded Stick

Long soak · bench date 29 Sep 2026

Difficulty 3/5 45 min Goggles

Six Ways to Stop a Sliced Apple Going Brown

Open bench · bench date 25 Sep 2026

Difficulty 1/5 25 min Everyday

An Osmosis Race Between Syrup, Salt Water and Tap Water

Long soak · bench date 22 Sep 2026

Difficulty 3/5 40 min Goggles

Cream to Butter: Watching an Emulsion Turn Inside Out

Steady hands · bench date 16 Sep 2026

Difficulty 2/5 25 min Everyday

Stacking Five Liquids: A Density Column You Can Drink

Steady hands · bench date 12 Sep 2026

Difficulty 2/5 30 min Everyday

Milk, Soap and the Surface Tension That Runs Away

Open bench · bench date 8 Sep 2026

Difficulty 1/5 15 min Everyday

Dissolving an Eggshell in Vinegar, Gram by Gram

Steady hands · bench date 5 Sep 2026

Difficulty 2/5 30 min Everyday

Measuring the Foam: How Much Gas Baking Soda Really Makes

Steady hands · bench date 2 Sep 2026

Difficulty 2/5 25 min Everyday

A Red Cabbage pH Ladder from Vinegar to Baking Soda

Steady hands · bench date 30 Aug 2026

Difficulty 2/5 35 min Everyday

Cornstarch Oobleck: Mixing a Liquid That Punches Back

Open bench · bench date 27 Aug 2026

Difficulty 1/5 20 min Everyday

Lemon Juice Invisible Ink and the Heat That Reveals It

Open bench · bench date 24 Aug 2026

Difficulty 1/5 15 min Everyday