12. devorah is a food chemist, and she is developing a chemical to help foods stay fresh longer. she mixed a…

12. devorah is a food chemist, and she is developing a chemical to help foods stay fresh longer. she mixed a red liquid substance and a colorless solid substance together in a sealed container. the diagram above shows the repeating groups of atoms that make up the two starting substances. after mixing, devorah found two white substances in the sealed container. (nothing had escaped.) which of the diagrams to the left shows the repeating groups of atoms that make up the ending substances?\n① diagram a\n② diagram b\n③ diagram c\n④ diagram d

12. devorah is a food chemist, and she is developing a chemical to help foods stay fresh longer. she mixed a red liquid substance and a colorless solid substance together in a sealed container. the diagram above shows the repeating groups of atoms that make up the two starting substances. after mixing, devorah found two white substances in the sealed container. (nothing had escaped.) which of the diagrams to the left shows the repeating groups of atoms that make up the ending substances?\n① diagram a\n② diagram b\n③ diagram c\n④ diagram d

Answer

Explanation:

Step1: Understand conservation of atoms

In a chemical reaction, atoms are neither created nor destroyed. The types and numbers of atoms in the starting substances must equal those in the ending substances.

Step2: Analyze starting substances

The starting substances have specific combinations of atoms represented by different - patterned circles. Count the types and numbers of each atom in the starting substances.

Step3: Check each option

  • Option A: Does not have the correct combination of atoms as per the starting substances.
  • Option B: Has the same types and numbers of atoms as the starting substances, following the law of conservation of mass.
  • Option C: Does not have the correct combination of atoms.
  • Option D: Does not have the correct combination of atoms.

Answer:

b. Diagram B