REGULAR QUIZZES - REGULAR TOPIC 3 Atoms, Elements, Molecules & Ions SET A
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QUESTION 1. Which of the following sub-atomic particles has the smallest mass?

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

QUESTION 2. Which of the following elements is NOT considered to be a metal?

(A) Sodium
(B) Carbon
(C) Potassium
(D) Copper
(E) Zinc

QUESTION 3. Isotopes of the same element only differ from one another in terms of their...

(A) Protons
(B) Electrons
(C) Neutrons
(D) Atomic numbers
(E) Symbols

QUESTION 4. If an element has an atomic number of 20, it DEFINITELY has which of the following attributes?

(A) 20 neutrons
(B) A mass number of 40
(C) 40 electrons
(D) 20 protons
(E) The symbol Ar

QUESTION 5. Which of the following could be described as polyatomic?

(A) Na
(B) B
(C) Ca
(D) SO3
(E) S




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