Question 1
An atom of carbon-14 contains 6 protons. How many neutrons does this isotope contain?
Correct Answer:
8
Question 2
Which subatomic particle has a negative charge and the smallest mass?
Correct Answer:
Electron
Question 3
A fictional element has three isotopes: mass 40.9 amu at 10.0% abundance, mass 43.9 amu at 30.0% abundance, and mass 45.9 amu at 60.0% abundance. What is the average atomic mass of this element?
Correct Answer:
44.8 amu
Question 4
Which of the following is the correct ground-state electron configuration for a neutral oxygen atom (Z = 8)?
Correct Answer:
1s2 2s2 2p4
Question 5
According to Hund's rule, how should electrons fill a set of three degenerate 2p orbitals when three electrons are added?
Correct Answer:
One electron in each of the three orbitals with parallel spins
Question 1
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Prepare with the GACE Chemistry (712) Practice Questions - GACE Chemistry (6-12) (712) Assessment Exam practice quiz. This question bank includes 100 questions covering mass, atom, molecules, atomic, and water. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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GACE Chemistry (712) Practice Questions - GACE Chemistry (6-12) (712) Assessment Exam

This practice set contains 100 questions from the matching question bank and focuses on mass, atom, molecules, atomic, and water. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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