REGULAR QUIZZES - REGULAR TOPIC 3 Atoms, Elements, Molecules & Ions SET B
REGULAR Quizzes - REGULAR TOPIC 3 Atoms, Elements, Molecules & Ions SET B.
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QUESTION 1. Atoms are always..
(A) Neutral
(B) Positive
(C) Negative
(D) Positive OR Negative
(E) None of the above
QUESTION 2. What is the most likely charge on an ion of Rubiduium (Rb)?
(A) +1
(B) +2
(C) +3
(D) -2
(E) -1
QUESTION 3. If an ion carries a charge of -3, what does this DEFINITELY tell us?
(A) It is a cation
(B) It is polyatomic
(C) It has gained 3 electrons
(D) It is a metal
(E) None of the above
QUESTION 4. There are three isotopes of an element that have masses of 18, 19 and 21 respectively. Which of the following is a possible average atomic mass?
(A) 17
(B) 18
(C) 20
(D) 21
(E) 22
QUESTION 5. What does the mass number of an isotope denote about the atom?
(A) The number of protons present
(B) The number of neutrons present
(C) The number of electrons present
(D) The number of protons + neutrons present
(E) The number of electrons + neutrons present
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