When does heat produce a chemical change? When heat energy is transferred.
When heat changes ice into liquid water.
When heat changes the chemical composition of an object.
When heat is observed in an experiment.

A change that releases heat is called an exothermic process.

So it is: When heat changes the chemical composition of an object.

Note that I'm not a science teacher! Always double check your answer.

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explanation:

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .