MindWare
✓Price
$9.63
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Hand Boiler Thermometer Toy Science Educational Toys Hand Boiler Home Decoration Ornament Gift
★★★★★
$9.63
Quantity
1
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About this item
- 1. It's a ring-shaped and twisted glass toy with a liquid in it that boils when heat is transferred from your bare hands.
- 2. It proves the vapour-liquid equilibrium, the colored liquid in the container is a volatile mixture with a boiling point just room temperature.
- 3. Boil this liquid at your body temperature, hold the lower container with your hand, and observe how the liquid boils and rises through the tube to the upper container.
- 4. Once leave your hand, it takes a few minutes for the liquid to cool and return to the container below, which is a very interesting science toy and a great demonstration of energy transfer.
- 5. The heat on your hand causes the liquid to boil, causing the liquid to evaporate into a gas. The expanding gas pushes the liquid upward, and when you release your hand, the equilibrium is re-established. The gas condenses again into a liquid and flows back to the container below.
Product details
Customer reviews
What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
Trustpilot
★★★★★
Excellent
4.5 average rating
S
Sigalit
🇮🇱 · January 2026
★★★★★
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
V
Verified buyer
🇦🇺 · November 2025
★★★★★
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
Showing 1–2 of 10 reviews
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