Test Bank General Chemistry (12e) Ebbing, Gammon, Koenigsmann, & Wu _ ALL CHAPTERS ISBN_ 978-8214194401 .pdf

Test Bank
General Chemistry (12e) Ebbing, Gammon,
Koenigsmann, & Wu | ALL CHAPTERS ISBN:
978-8214194401



🧪 General Chemistry (12e) – Practice Questions (Exam Style)
🔹 1. Atomic Structure
1. What is the charge of a proton?​
A. −1​
B. 0​
C. +1​
D. +2

✅ Answer: C
2. Which particle determines the identity of an element?​
A. Neutron​
B. Electron​
C. Proton​
D. Isotope

✅ Answer: C

🔹 2. Periodic Table
3. Elements in the same group have the same:​
A. Atomic mass​

,B. Number of neutrons​
C. Valence electrons​
D. Atomic radius

✅ Answer: C
4. Which element is most reactive metal?​
A. Na​
B. Mg​
C. Al​
D. Fe

✅ Answer: A

🔹 3. Chemical Bonding
5. A covalent bond involves:​
A. Transfer of electrons​
B. Sharing of electrons​
C. Neutron exchange​
D. Proton exchange

✅ Answer: B
6. Ionic bonds form between:​
A. Two nonmetals​
B. Metal and nonmetal​
C. Two metals​
D. Noble gases

✅ Answer: B

🔹 4. Stoichiometry
7. What is the molar mass of water (H₂O)?​
H = 1, O = 16​
2(1) + 16 = 18 g/mol

, ✅ Answer: 18 g/mol
8. How many moles are in 36 g of water?​
36 ÷ 18 = 2 moles

✅ Answer: 2 mol

🔹 5. Gases
9. Which gas law relates pressure and volume?​
A. Charles’s Law​
B. Boyle’s Law​
C. Avogadro’s Law​
D. Dalton’s Law

✅ Answer: B
10. If volume increases, pressure will:​
A. Increase​
B. Decrease​
C. Stay same​
D. Become zero

✅ Answer: B
11. Isotopes differ in number of:​
A. Protons​
B. Electrons​
C. Neutrons​

✅
D. Energy levels​
C

12. Mass number equals:​
A. Protons only​
B. Protons + neutrons​
C. Neutrons only​