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Warm and Bright

Chemistry

Warm and Bright

The Kit

A Science Unlocked kit, Warm and Bright, about thermal energy — heat, how it moves, and how to keep it in or let it out.

Experiment 1

Keep a balloon from popping with water

A little water in the balloon takes the heat, so the rubber doesn’t pop when the flame touches it.

Holding a green balloon next to a candle on a tray
Lighting the candle on the tray
Blowing up a red balloon
Holding a green balloon over a lit tea light
Pressing a red balloon onto a tea light

Experiment 2

Test which materials move heat

Foil and clay in cups of water, with chocolate to see which material moves heat.

Pouring water into a foam cup beside a foil spoon
Two foam cups with clay and foil holders and pieces of chocolate
A piece of chocolate on a cup next to the activity sheet

Experiment 3

Design and build a drink insulator

Build an insulator to keep a drink warm or cold, then test how well it works.

Building a drink insulator for Warm and Bright experiment 3
Drink insulator materials and setup
Testing the drink insulator
Finished drink insulator for experiment 3

Experiment 4

Use food coloring to see how heat works at the particle level

Food coloring in warm and cool water shows how heat makes particles move.

Food coloring experiment setup for Warm and Bright experiment 4
Food coloring showing heat moving through water