Please answer the following questions in your own words.

1. Define the following terms:

1. Ion – 

1. Valence electrons –

1. Atomic number –

1. Electronegativity –

1. Octet rule –

1. Explain the difference between a covalent, ionic, and hydrogen bond.

1. Compare and contrast polar and nonpolar covalent bonding. Identify 1 similarity and 1 difference.

1. Answer the following questions about water (H₂0):

1. Which type of chemical bond holds the hydrogen and oxygen atoms together in a single water molecule?

1. Which type of chemical bond holds different water molecules together in a water droplet?

1. Is water an example of a polar or nonpolar molecule? Explain.

1. Which atom in a water molecule has a greater electronegativity?

1. Will water dissolve nonpolar molecules? Explain.

1. Explain how the following properties of water are important to living organisms:

1. Water has a high heat of vaporization

1. Water is a good solvent

1. Ice is less dense than liquid water