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Difficulty 1 · Open bench 5 cards

No special gear. Safe to run unsupervised by an adult nearby.

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

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

Six Ways to Stop a Sliced Apple Going Brown

Open bench · bench date 25 Sep 2026

Difficulty 1/5 25 min Everyday

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

Milk, Soap and the Surface Tension That Runs Away

Open bench · bench date 8 Sep 2026

Difficulty 1/5 15 min Everyday

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

Cornstarch Oobleck: Mixing a Liquid That Punches Back

Open bench · bench date 27 Aug 2026

Difficulty 1/5 20 min Everyday

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

Lemon Juice Invisible Ink and the Heat That Reveals It

Open bench · bench date 24 Aug 2026

Difficulty 1/5 15 min Everyday