Which of the following example demonstrates the reversibility of a chemical change? A. the rotting of eggs B. recharging batteries C. refreezing carbon dioxide gas into dry ice D. dehydrating sugar water
C. refreezing carbon dioxide gas into dry ice
The example that demonstrates the reversibility of a chemical change is C. refreezing carbon dioxide gas into dry ice.
To determine which of the given examples demonstrates the reversibility of a chemical change, let's analyze each option:
A. The rotting of eggs: Rotting is a natural process that involves the breakdown of organic matter. This is a irreversible chemical change as it involves the decomposition of the eggs, resulting in the formation of new substances.
B. Recharging batteries: This is an example of a reversible chemical change. Batteries convert chemical energy into electrical energy. During recharging, the chemical reactions that occurred during discharge are reversed, allowing the battery to regain its chemical potential energy.
C. Refreezing carbon dioxide gas into dry ice: This example also represents a reversible chemical change. Dry ice is solid carbon dioxide. By lowering the temperature and increasing the pressure, carbon dioxide gas can be converted back into solid dry ice.
D. Dehydrating sugar water: Dehydration is a process that involves removing water from a substance. When sugar water is dehydrated, the water molecules are removed, resulting in the formation of solid sugar. This is an irreversible chemical change.
Based on this analysis, the only example that demonstrates the reversibility of a chemical change is option B: recharging batteries.