Physical Properties of Hydrogen Peroxide
* Appearance: Colorless liquid.
* Odor: Faint, slightly pungent.
* Taste: Bitter.
* Density: 1.45 g/cm³ (higher than water).
* Boiling point: 150.2 °C (302.4 °F).
* Freezing point: -0.43 °C (31.1 °F).
* Solubility: Miscible in water (mixes completely).
* Viscosity: Slightly more viscous than water.
* Stability: Decomposes slowly in light and heat, releasing oxygen.
The Exception: Stability
While the other properties listed are typical physical characteristics, stability is a bit of a grey area. It's technically a chemical property. Here's why:
* Stability refers to a substance's tendency to undergo chemical change. Hydrogen peroxide breaks down into water and oxygen, which is a chemical reaction.
* Physical properties are characteristics that can be observed without altering the substance's chemical composition.
In Summary
The physical properties of hydrogen peroxide are its appearance, odor, taste, density, boiling point, freezing point, solubility, and viscosity. Its instability, however, is a chemical property related to its tendency to undergo decomposition.
