Condensation of steam is not a chemical change.

a.) True

b.) False

The statement "Condensation of steam is not a chemical change" is true. The process of condensation involves the transformation of steam, which is water vapor, back into liquid water. This change is classified as a physical change rather than a chemical one.

Understanding Physical vs. Chemical Changes

To grasp why condensation is a physical change, it’s essential to differentiate between physical and chemical changes. A physical change involves a change in the state or appearance of a substance without altering its chemical composition. In contrast, a chemical change results in the formation of new substances with different chemical properties.

Examples of Physical Changes

• Melting ice into water: The chemical structure of H2O remains the same.
• Boiling water: The water changes from liquid to gas, but it is still H2O.
• Condensation of steam: Steam cools and turns back into liquid water, maintaining its chemical identity.

What Happens During Condensation?

When steam cools down, the molecules lose energy and come closer together, transitioning from a gaseous state to a liquid state. This process can be observed when you see water droplets forming on a cold surface, like a glass of ice water. The steam in the air condenses into tiny droplets of liquid water, but the molecular structure of water (H2O) remains unchanged throughout this process.

Why It Matters

Understanding the distinction between physical and chemical changes is crucial in various scientific fields, including chemistry and environmental science. For instance, recognizing that condensation is a physical change helps in understanding the water cycle, where water evaporates, condenses, and precipitates without altering its chemical identity.

In Summary

Condensation of steam is indeed a physical change because it involves a change in state from gas to liquid without altering the chemical structure of water. This concept is fundamental in both everyday life and scientific studies, illustrating the dynamic nature of matter while preserving its inherent properties.