The melting of wax is a physical change, yet the burning of wax is a chemical change. what is the essential difference between the physical change and the chemical change of wax in a burning candle?
a. the burning of wax forms new compounds, while the melting of wax does not.
b. a higher temperature is needed to burn wax than to melt wax.
c. melted wax can be separated into other substances, while solid wax cannot.
d. melted wax is a different phase of matter than solid wax.