Chemistry Projects

Potassium permanganate volcano near end of eruption
The potassium permanganate volcano is a classic chemistry demonstration that produces smoke, colored flames and sparks, a glow resembling lava, and colored ash. This type of chemical volcano captivates students while illustrating principles of redox reactions, oxidation, exothermic reactions, the effect of surface area on reaction rate, decomposition reactions, and […]

Potassium Permanganate Volcano

Hot ice is another name for sodium acetate.
Hot ice is another name for sodium acetate (CH3COONa or NaOAc). It is the sodium salt of acetic acid, which is the key component of vinegar. Hot ice gets its name from the way it solidifies. A solution of sodium acetate supercooled below its melting point suddenly crystallizes. Heat is […]

Make Hot Ice From Baking Soda and Vinegar

Customize the classic slime recipe by making green leprechaun slime to celebrate St. Patrick’s Day. The slime isn’t sticky, so it won’t work as a leprechaun trap, but the vibrant green color may lure them close. It’s a fun holiday chemistry project for kids of all ages. Materials Leprechaun slime […]

Green Leprechaun Slime for St. Patrick’s Day

Bath bombs dissolve in an endothermic reaction
An endothermic reaction is a chemical reaction that absorbs heat from its environment. Like any chemical reaction, an endothermic reaction requires activation energy to proceed. Then, it continues to absorb energy. Such reactions feel cold. In contrast, exothermic reactions release more heat than they absorb and feel hot. Not all […]

Easy Endothermic Reaction Demonstration