Are these physical change or chemical change? Prompt 1iron chain rusting over a long period of time

Answer for prompt 1 iron chain rusting over a long period of time

Prompt 2a piece of paper burning

Answer for prompt 2 a piece of paper burning

Prompt 3peach spoils by bacteria and rots

Answer for prompt 3

peach spoils by bacteria and rots

Prompt 4glue gun melts a glue stick

the molecules move in straight line until they collide with each other or with the walls of the container. collisions are perfectly elastic; when two molecules collide, they change their directions and kinetic energies, but the total kinetic energy is conserved.

explanation:

no podemos ver la

explanation:

no te podemos ayudar: /

a electronegativity decreases beacuse the size of nucleus is bigger.