Chemistry Module 1 Questions May 2026

Argon (Ar) has the higher ionization energy. Reasoning: Ionization energy is the energy required to remove an electron. It generally increases as you move from left to right across a period. Sodium is on the left (Group 1) and wants to lose an electron to become stable. Argon is a Noble Gas on the far right (Group 18) with a full outer shell. It is highly stable and holds onto its electrons tightly, making it very difficult to remove one.

Density = Mass / Volume Density = 25.6 / 4.0 = 6.4 chemistry module 1 questions

Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons. Because they have different numbers of neutrons, they have different mass numbers. Example: Carbon-12 (6p, 6n) and Carbon-14 (6p, 8n) are isotopes. Argon (Ar) has the higher ionization energy

For students embarking on their journey into the world of atoms, bonds, and reactions, Chemistry Module 1 represents the threshold. Whether you are studying for a high school final, an AP exam, or a university entrance assessment, "Module 1" almost universally refers to the same critical concept: The Foundations of Chemistry. Sodium is on the left (Group 1) and