Well you didn’t post any but I’m hoping that either plastic, lead, wood, glass, or paper, are an option.
Scientist arrange there data in coding and research.
I believe that answer is D
The heat from the Bunsen burner transfers to the water and the pot, then the heat from the pot transfers to the person’s hand.
I don’t know about 1 But number 2 is AB + xH2O = AB.xH2O
Molecules are cooler so they bocme more dense.. move very slow, have less kinetic energy and are not in random motion.