The Green Blob results in a dark green, jelly like substance forming immediately. The iron in the steel wool combines with vinegar to produce iron acetate. Household ammonia's chemical name is ammonium hydroxide. A chemical reaction occurs as soon as these two liquids combine. The raw potatos contains the enzyme catalase.
Enzymes are chemicals found in living cells.
Their purpose is to speed up the breakdown of complex food chemicals into smaller, simpler, more usable parts. Catalase from the potato's cell causes the hydrogen peroxide to quickly break apart into water and oxygen gas. The combining of iron filings and sulfur powder proved that when both element are heated a new property is formed, which indicated that a chemical reaction has taken place. Chemistry for Every Kid .