Answer:
In summary, both the rotting of pizza and the mixing of glue and laundry powder involve chemical reactions. The rotting process involves the decomposition of organic matter, while the mixing of glue and laundry powder leads to polymerization and the formation of putty.
Step-by-step explanation:
These two changes have in common that they both involve chemical reactions.
1. Rotting of pizza: When a piece of pizza rots in a trashcan, it undergoes a process called decomposition. This process involves the breakdown of organic matter by microorganisms such as bacteria and fungi. These microorganisms feed on the pizza's organic compounds, breaking them down into simpler substances. This decomposition process is a chemical reaction that results in the release of gases and the formation of new compounds.
2. Mixing glue and laundry powder to create putty: When glue and laundry powder are mixed together, they undergo a chemical reaction known as polymerization. Glue contains polymers, which are long chains of repeating units. The laundry powder, which often contains borax, acts as a cross-linking agent that connects the polymer chains, forming a solid material called putty. This chemical reaction changes the properties of the glue and laundry powder mixture, transforming it into a moldable and adhesive substance.