Which of the following example demonstrates the reversibility of a chemical change?(1 point)
Responses
dehydrating sugar water
dehydrating sugar water
refreezing carbon dioxide gas into dry ice
refreezing carbon dioxide gas into dry ice
recharging batteries
recharging batteries
the rotting of eggs
refreezing carbon dioxide gas into dry ice
The correct example that demonstrates the reversibility of a chemical change is: refreezing carbon dioxide gas into dry ice.
The example that demonstrates the reversibility of a chemical change is "refreezing carbon dioxide gas into dry ice".
To determine the answer, we need to understand the concept of reversibility in a chemical change. Chemical changes involve the formation of new substances with different properties. Reversibility refers to the ability of a chemical change to be reversed, meaning it can be undone and returned to its original state.
In the case of refreezing carbon dioxide gas into dry ice, this demonstrates reversibility because dry ice is simply the solid form of carbon dioxide. When carbon dioxide gas is cooled and returned to its solid state, it becomes dry ice. This process can be repeated, with dry ice melting back into carbon dioxide gas when heated.
On the other hand, the other options do not demonstrate reversibility. Dehydrating sugar water involves removing the water from the solution, which cannot be easily undone. Recharging batteries involves a chemical reaction that generates electricity, but the original state of the battery cannot be restored exactly as it was before. The rotting of eggs is a natural decay process that cannot be reversed.
Therefore, "refreezing carbon dioxide gas into dry ice" is the example that demonstrates the reversibility of a chemical change.