Thermal energy moves from a to b by 1.(a, b,c). heat transfer will continue until the liquid in b reaches 2.(d, e,f) temperature as the liquid in a. 1. a= conduction b = convection c = radication 2. d = a higher e = a lower f = the same which ones?

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.

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa