Atomic Composition and Molecular Models -Multiple Choice Questions Quiz

Interactive MCQs on the topic “Atomic Composition and Molecular Models”:

Solve the following 10 questions: Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1:What are atoms made up of?

(A) Protons only
(B) Protons and neutrons
(C) Protons, neutrons, and electrons
(D) Protons and electrons

Question 2:Which part of the atom has a positive charge?

(A) Neutron
(B) Electron
(C) Proton
(D) Nucleus

Question 3: What is a molecule?

(A) A proton
(B) A single atom
(C) Two or more atoms bonded together
(D) A group of neutrons

Question 4:What is the charge of an electron?

(A) Positive
(B) Neutral
(C) No charge
(D) Negative

Question 5:How many electrons can the first shell of an atom hold?

(A) 2 electrons
(B) 4 electrons
(C) 8 electrons
(D) 10 electrons

Question 6:Which element is the simplest and most abundant in the universe?

(A) Oxygen
(B) Helium
(C) Hydrogen
(D) Carbon

Question 7:What is the atomic number of an element?

(A) The number of electrons
(B) The number of neutrons
(C) The number of protons
(D) The number of molecules

Question 8:Which of the following is a molecule made of two oxygen atoms?

(A) H₂O
(B) O₂
(C) CO₂
(D) CH₄

Question 9:How do atoms form chemical bonds?

(A) By moving closer together
(B) By exchanging protons
(C) By separating their nuclei
(D) By sharing or transferring electrons

Question 10:What is the structure of a water molecule (H₂O)?

(A) H₂O (two hydrogen atoms, one oxygen atom)
(B) H₂O₂ (two hydrogen atoms, two oxygen atoms)
(C) CO₂ (one carbon atom, two oxygen atoms)
(D) NH₃ (one nitrogen atom, three hydrogen atoms)