AP QUIZZES - AP TOPIC 2 Atoms, Ions & Nomenclature SET E
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QUESTION 1. A radioactive isotope is known to have a half-life of 4.56 minutes. What % of a sample will remain after 9.12 minutes?

(A) 75%
(B) 25%
(C) 12.5%
(D) 100%
(E) 50%

QUESTION 2. What do atoms of the isotopes 37Cl and 35Cl have in common?

(A) They have the same number of protons
(B) They have the same number of neutrons
(C) They have the same number of electrons
(D) Nothing
(E) Both (A) & (C)

QUESTION 3. The compound NaNO2 is called?

(A) Sodium Nitrate
(B) Sodium Nitrite
(C) Sodium Nitric Acid
(D) Nitric Acid
(E) Monosodium nitrite

QUESTION 4. Adding a hydrogen ion (H+) to a sulfate ion produces what?

(A) An neutral acid
(B) Another ion
(C) A sulfite ion
(D) Sulfurous Acid
(E) Sulfuric Acid

QUESTION 5. Proton:Neutron ratio can be used in predictions in what context?

(A) To predict the existence of isotopes
(B) To predict physical properties like boiling point
(C) To predict chemical reactivity
(D) To predict the stability of a nucleus
(E) To predict color




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