BIO-111 Ch. 2 Review Questions

Flashcards covering key ideas from the Ch. 2 review questions in Biology 2e, including neutrons, isotopes, electron configuration, bonds, water properties, pH changes, acids/bases, and functional groups.

What is the number of neutrons in xenon-108 (atomic number 54)?

54 neutrons.

What do you call atoms that vary in the number of neutrons in their nuclei?

Isotopes.

For potassium (Z = 19), what is its electron configuration?

2 in shell 1, 8 in shell 2, 8 in shell 3, and 1 in shell 4 (2-8-8-1).

Which type of bond represents a weak chemical bond?

Hydrogen bond.

Which statement about water is not true?

Water is the most abundant molecule in the Earth's atmosphere.

When acids are added to a solution, the pH should .

Decrease.

What is a molecule that binds up excess hydrogen ions in a solution called?

Base.

Which statement about acids and bases is true?

Acids and bases will neutralize each other.

Each carbon atom can bond with up to how many other atoms or molecules?

Four.

Which of the following is not a functional group that can bond with carbon?

Sodium hydroxyl (not a recognized functional group for bonding with carbon).