Question

question 1 (mandatory) (2 points) water and hydrogen bonds chemical reactions between molecules drive the biological processes of life. there are many different types of bonds and each one is formed differently. answer the following questions. which type of chemical bond holds the atoms together within a molecule of water? question 2 (mandatory) (3 points) water is referred to as a polar molecule. describe the characteristics of a polar molecule.

Explanation:

In a water molecule (H₂O), oxygen and hydrogen atoms are held together by covalent bonds. Oxygen has a higher electronegativity than hydrogen, leading to unequal sharing of electrons and a polar - covalent bond. For a polar molecule like water, the electrons are not evenly distributed. Oxygen, being more electronegative, pulls the shared electrons closer to itself, creating a partial negative charge (δ⁻) on the oxygen atom and partial positive charges (δ⁺) on the hydrogen atoms. This results in a dipole moment, with a positive end near the hydrogens and a negative end near the oxygen.

Answer:

Question 1: The atoms within a molecule of water are held together by polar - covalent bonds.
Question 2: Characteristics of a polar molecule (using water as an example): Uneven electron distribution due to differences in electronegativity between atoms (oxygen is more electronegative than hydrogen in water). Creation of partial positive and negative charges (partial positive on hydrogens, partial negative on oxygen). Presence of a dipole moment.