Which of the following undergoes change during a chemical reaction? a. atomic masses of elements in reactants b. element identities of atoms in reactants c. total number of electrons in reactants d. chemical bonds between atoms in reactants

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this

the correct answer should be false

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