How is Maria's decision similar to the cost-benefit analysis that a company might perform? Summarize: In a table, list the costs and benefits of Maria's two choices: continuing to prepare the jar for the recycling bin or throwing it out.
Pose Questions: Maria decides to research her question. List three questions that Maria should try to answer as she does her research.

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chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.

the answers are

c and c