Questions: Which of the following is an example of chemical energy being converted into another form? A. Paper being torn B. Heating cold water C. Burning a log in a fireplace D. A roller coaster going downhill

Solution Steps

Chemical energy is stored in the bonds of chemical compounds and can be converted into other forms of energy, such as thermal energy, when a chemical reaction occurs. An example of this conversion is combustion, where chemical energy is transformed into heat and light.

• Option A: Paper being torn
  Tearing paper is a physical change, not a chemical reaction, so no chemical energy conversion occurs.

• Option B: Heating cold water
  Heating water involves thermal energy transfer, not a conversion of chemical energy.

• Option C: Burning a log in a fireplace
  Burning a log is a combustion reaction, where the chemical energy in the log is converted into thermal energy (heat) and light.

• Option D: A roller coaster going downhill
  This involves the conversion of potential energy to kinetic energy, not chemical energy.

The correct example of chemical energy being converted into another form is the burning of a log in a fireplace, as it involves a chemical reaction that releases energy.

Final Answer