If the temperature of a piece of steel decreases, what happens to its density? a. the density decreases. b. the density increases. c. the density does not change. d. the density first increases, then decreases.

B

Explanation:

If the temperature of a piece of steel decreases its density will increase. Explanation: When the temperature of the the substance increases the volume of the substance also increases.This means that the temperature is directly proportional to the volume.

i think   the answer is c hope i'm right

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.