only tarnishing of silver is a chemical reaction collection of possible responses Dropping a penny into a glass of water causes lead to melt, stone to crush, sugar to dissolve in water, and silver to tarnish.
Chemical Reaction
A chemical reaction is the chemical transformation of one set of chemical components into another. Chemical reactions are often defined as changes that only affect the locations of electrons in the formation and breaking of chemical bonds between atoms, with no change to the nuclei (no change to the elements present), and can frequently be described using a chemical equation. Nuclear chemistry is a branch of chemistry that studies the chemical reactions of unstable and radioactive materials, which can result in both electronic and nuclear alterations. The substance (or substances) that initiate a chemical reaction are known as reactants or reagents.
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