Question

the model shows water molecules interacting. the gray circles represent oxygen, the white circles represent hydrogen. which conclusion is supported by this model? a hydrogen atoms in water molecules are only attracted to other hydrogen atoms. b oxygen atoms in water molecules are attracted to both oxygen atoms and hydrogen atoms. c oxygen atoms in water molecules are also attracted to hydrogen atoms in other water molecules. d hydrogen atoms in water molecules are only attracted to an oxygen atom in the same water molecule.

Explanation:

Step1: Analyze water - molecule structure

Water has the formula $H_2O$. In water, oxygen is more electronegative than hydrogen, creating a polar - covalent bond.

Step2: Consider intermolecular forces

Hydrogen bonds form between water molecules. A hydrogen atom in one water molecule is attracted to the oxygen atom of another water molecule due to the partial positive charge on hydrogen and partial negative charge on oxygen.

Step3: Evaluate each option

• Option A: Hydrogen atoms are not attracted to other hydrogen atoms in this context; they are attracted to oxygen atoms of other water molecules, so A is incorrect.
• Option B: Oxygen atoms are mainly attracted to hydrogen atoms of other water molecules through hydrogen - bonding, not strongly to other oxygen atoms, so B is incorrect.
• Option C: Oxygen atoms in water molecules are attracted to hydrogen atoms in other water molecules through hydrogen - bonding, which is correct.
• Option D: Hydrogen atoms in water molecules are also attracted to oxygen atoms in other water molecules, not just in the same molecule, so D is incorrect.

Answer:

C. Oxygen atoms in water molecules are also attracted to hydrogen atoms in other water molecules.