Which section from the article BEST explains why chemical reactions are different from other types of reactions?

Abullet found at a crime scene may be used as evidence in a trial if the percentage of metals match to the composition of metals in a bullet from the suspect's ammunition. a forensic scientist's analysis of the bullet shows that it contains 11.9 g of lead, 0.5 g of tin, and 0.8 b of antimony. what is the percentage of lead metal in the bullet? express your answers to the one's place.

Based on the equation and the information in the table, what is the enthalpy of the reaction?

Light waves are as they pass through the