,
,
, CHEM 103 FINAL EXAM WITH MULTIPLE CHOICE OF
QUESTIONS AND CORRECT ANSWERS ALREADY GRADED A+
AND 100% GUARANTEE PASS
Section 1: Atomic Structure & Periodic Trends (Q1–Q20)
1. Which subatomic particle has a negative charge?
A. Proton
B. Neutron
C. Electron ✅
D. Nucleus
Answer: C ✅ — Electrons carry a negative charge.
2. The atomic number of an element is determined by the number of:
A. Neutrons
B. Protons ✅
C. Electrons
D. Nucleons
Answer: B ✅ — Atomic number = number of protons.
3. Isotopes of an element differ in the number of:
A. Protons
B. Electrons
C. Neutrons ✅
D. Ions
Answer: C ✅ — Isotopes have the same protons but different neutrons.
4. The mass number of an atom is the sum of:
A. Protons and electrons
,
, CHEM 103 FINAL EXAM WITH MULTIPLE CHOICE OF
QUESTIONS AND CORRECT ANSWERS ALREADY GRADED A+
AND 100% GUARANTEE PASS
Section 1: Atomic Structure & Periodic Trends (Q1–Q20)
1. Which subatomic particle has a negative charge?
A. Proton
B. Neutron
C. Electron ✅
D. Nucleus
Answer: C ✅ — Electrons carry a negative charge.
2. The atomic number of an element is determined by the number of:
A. Neutrons
B. Protons ✅
C. Electrons
D. Nucleons
Answer: B ✅ — Atomic number = number of protons.
3. Isotopes of an element differ in the number of:
A. Protons
B. Electrons
C. Neutrons ✅
D. Ions
Answer: C ✅ — Isotopes have the same protons but different neutrons.
4. The mass number of an atom is the sum of:
A. Protons and electrons
