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Question Set: Atoms, Molecules, and Compounds
NGSS Science and Engineering Practices:
NGSS Crosscutting Concepts:
NGSS Disciplinary Core Ideas:
- In your own words, what is the difference between an element and a compound?
- How many protons do each of the following atoms have?
- oxygen (O)
- sodium (Na)
- chlorine (Cl)
- aluminum (Al)
- How many electrons does each of the following atoms have when they are neutral?
- oxygen (O)
- sodium (Na)
- chlorine (Cl)
- aluminum (Al)
- What are the elements with atomic numbers 12, 20, and 35?
- How many elements are in periods 4 and 5?
- In Period 4, there are 18 groups.
- What is the group number for the members of the scandium (Sc) group?
- What is the group number for the members of the zinc (Zn) group?
- Where are the nonmetals located on the table?
- Are there more metals or nonmetals? How many of each are there?
- Which noble gases are likely used in the sign for the Atomic Theater at the American Museum of Science and Energy (Fig. 2.17)?

Exploring Our Fluid Earth, a product of the Curriculum Research & Development Group (CRDG), College of Education. University of Hawaii, 2011. This document may be freely reproduced and distributed for non-profit educational purposes.