Chemistry I · Atomic Structure and Periodic Table
Virginia SOL CH.2.AS
Virginia SOL CH.2.AS is part of the Atomic Structure and Periodic Table strand in Chemistry I (Science). Under this Standards of Learning objective, students investigate and understand that elements have properties based on their atomic structure and that the periodic table is an organizational tool for elements based on these properties. Below is what CH.2.AS covers in plain language, the specific skills it is assessed on, the key concepts to review, and how to practice CH.2.AS for the Virginia SOL test.
What SOL CH.2.AS means
Investigate and understand that elements have properties based on their atomic structure and that the periodic table is an organizational tool for elements based on these properties.
Practice Chemistry I SOL questions
Free Chemistry I questions from official Virginia Department of Education released SOL tests — good practice while you work on CH.2.AS and the rest of the course. Pick an answer to check it instantly, or open “Show answer” to review.
1. The formula for dinitrogen tetroxide is —
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Answer: A — N₂O₄
2. A colored ink sample is placed on absorbent paper, and a solvent moves upward through the paper, separating the ink into distinct colored components at different heights based on differing attractions to the paper and solvent. Which laboratory technique is being used?
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Answer: A — Chromatography
3. Industrial deep-sea divers breathe a mixture of helium and oxygen to prevent nitrogen narcosis. If a diver’s tank has a total pressure of 170 atm and the partial pressure of helium is 110 atm, what is the partial pressure of oxygen?
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Answer: A — 60 atm
4. Which of the following properties decreases from left to right across a period on the periodic table?
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Answer: C — Atomic radius
Skills you’ll practice for CH.2.AS
- Use average atomic mass, isotopes, mass number, and atomic number to describe and compare elements.
- Describe and analyze nuclear decay.
- Use trends within groups and periods including atomic radii, electronegativity, shielding effect, and ionization energy to predict element properties.
- Use electron configurations, valence electrons, excited electrons, and ions to explain chemical behavior.
- Describe historical and quantum models of the atom.
Key concepts covered by CH.2.AS
- atomic mass
- isotopes
- mass number
- atomic number
- element comparison
- nuclear decay
- radioactive decay
- half-life
- decay series
- periodic trends
- atomic radii
- electronegativity
- shielding effect
- ionization energy
- element prediction
- electron configuration
- valence electrons
- excited electrons
- ions
- chemical behavior
- atomic models
- historical models
- quantum model
- electron orbitals
How to study and practice SOL CH.2.AS
Start with a quick diagnostic to see whether CH.2.AS is already solid, then work each skill above with guided notes, flashcards, and SOL-style practice questions. For official released items, see our Virginia SOL practice tests guide and how to study for the SOL test.
Frequently asked questions about SOL CH.2.AS
What is Virginia SOL CH.2.AS?
SOL CH.2.AS is a Chemistry I Standard of Learning in the Atomic Structure and Periodic Table strand. It expects students to investigate and understand that elements have properties based on their atomic structure and that the periodic table is an organizational tool for elements based on these properties.
What skills does SOL CH.2.AS cover?
SOL CH.2.AS is assessed on 5 skills: use average atomic mass, isotopes, mass number, and atomic number to describe and compare elements; describe and analyze nuclear decay; use trends within groups and periods including atomic radii, electronegativity, shielding effect, and ionization energy to predict element properties; use electron configurations, valence electrons, excited electrons, and ions to explain chemical behavior; describe historical and quantum models of the atom.
What strand of Chemistry I is SOL CH.2.AS in?
SOL CH.2.AS belongs to the Atomic Structure and Periodic Table reporting strand of the Chemistry I Virginia Standards of Learning.
How do I study and practice for SOL CH.2.AS?
Start with a diagnostic to see whether CH.2.AS is already solid, then work the 5 skills above with guided notes, flashcards, and SOL-style practice questions. For official released items, see the Virginia SOL practice tests guide.