Which option is an example of a chemical change?(1 point)
Responses
folding paper
folding paper
burning wood
burning wood
stretching a rubber band
stretching a rubber band
chopping vegetables
burning wood
The option "burning wood" is an example of a chemical change.
The correct option that represents an example of a chemical change is "burning wood." To understand why, we need to know the difference between chemical and physical changes.
A chemical change occurs when the arrangement of atoms in a substance is altered, resulting in the formation of new substances with different properties. In the case of burning wood, the heat causes a chemical reaction that breaks down the wood molecules into carbon dioxide, water vapor, ash, and other byproducts. This chemical reaction transforms the original wood into new substances, which is a clear indication of a chemical change.
On the other hand, physical changes refer to alterations in the physical characteristics of a substance without changing its composition. Folding paper, stretching a rubber band, and chopping vegetables are all examples of physical changes. These actions result in changes to the shape, size, or appearance of the material, but they do not create new substances or alter the chemical composition of the original material.
Therefore, among the given options, "burning wood" is the only example of a chemical change.