Which of the following example demonstrates the reversibility of a chemical change?
refreezing carbon dioxide gas into dry ice
the rotting of eggs
recharging batteries
dehydrating sugar water
2 answers
refreezing carbon dioxide gas into dry ice
ANSWERS
1. dry ice becoming vapor
2. iron (Fe) reacting to water((H2O)
3. conduct a test to determine the chemical makeup of the molecules
4. Atoms of one or more substances rearrange into a new substance.
5. recharging batteries
1. dry ice becoming vapor
2. iron (Fe) reacting to water((H2O)
3. conduct a test to determine the chemical makeup of the molecules
4. Atoms of one or more substances rearrange into a new substance.
5. recharging batteries