Escribe en cual de estos procesos se absorbe calor o se libera calor 1. cuando se derrite la cera de una vela
2. cuando se solidifica el jugo de china
3. cuando se forman las nubes
4. cuando se forman las gotas de rocío.
5. cuando se forman los copos de nieve​

How did planetesmals form planets? a. they broke apart into smaller chunks.b. they collided and stuck together.c. they cooled and pulled ice together.d. they began to rotate.

Select all the correct answers.which compounds have the empirical formula ch20? (multiple answers)a.c2h4o2b.c3h603c.ch2o2d.c5h1005e.c6h1206

The following transition occurs at a molecular level for a substance. what transition corresponds to this change in microscopic structure? the carbon dioxide molecules on the left are in a regular, tightly packed pattern. after heating, it becomes much lower density. a. melting b. boiling c. sublimation d. freezing