Sketch a heating curve graph of temperature vs. time for the heating of a point mixture of methanol and ethanol. The b. p. of methanol is 65°C and that of
ethanol is 78°C. What should your graph look like. Upload your completed
Unit 4 Temperature vs Time Graph.
Describe how you could use the information in the graph you sketched to
separate a mixture of methanol and ethanol.
Can u draw or add graph and there is 2 questions in here.*

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

they vary. it used to be meat, grain, bread, candy, beverages, donuts, and fruits/vegetables. now they added exercise in.