Question

1. tiana is a chemist who is making a chemical to add to swimming pools in order to make the water safer. she mixed two solid substances together in a sealed container. the diagram above shows the repeating groups of atoms that make up the two starting substances. after mixing, tiana found two liquid 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? a diagram a b diagram b c diagram c d diagram d

Explanation:

In a chemical reaction, atoms are rearranged but conserved (Law of Conservation of Mass). We analyze each diagram:

• Diagram A: Repeats original substances, no reaction. Eliminate.
• Diagram B: Introduces a new 3 - atom group, inconsistent with reactants. Eliminate.
• Diagram C: Atoms (colors) from reactants are rearranged into new pairs, consistent with conservation.
• Diagram D: Contains a new atom pair (black - orange) not in reactants. Eliminate.

So Diagram C is correct.

Answer:

c. Diagram C