Multiple Choice
Which of the following is the smallest possible piece of a pure substance that retains its chemical properties?
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- 1. Intro to General Chemistry3h 48m
- Classification of Matter18m
- Physical & Chemical Changes19m
- Chemical Properties7m
- Physical Properties5m
- Intensive vs. Extensive Properties13m
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- 2. Atoms & Elements4h 16m
- The Atom9m
- Subatomic Particles15m
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- Ions27m
- Atomic Mass28m
- Periodic Table: Classifications11m
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- 22. Organic Chemistry5h 7m
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- Skeletal Formula6m
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- Intro to Hydrocarbons16m
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- Chirality15m
- Functional Groups in Chemistry11m
- Naming Alkanes4m
- The Alkyl Groups9m
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- Naming Alcohols11m
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- Alkane Reactions7m
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- 23. Chemistry of the Nonmetals2h 39m
- Main Group Elements: Bonding Types4m
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- Main Group Elements: Density11m
- Main Group Elements: Periodic Trends7m
- The Electron Configuration Review16m
- Periodic Table Charges Review20m
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- Production of Hydrogen8m
- Group 1A and 2A Reactions7m
- Boron Family Reactions7m
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- Oxides, Peroxides, and Superoxides12m
- Oxide Reactions4m
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- Noble Gas Compounds3m
- 24. Transition Metals and Coordination Compounds3h 16m
- Atomic Radius & Density of Transition Metals11m
- Electron Configurations of Transition Metals7m
- Electron Configurations of Transition Metals: Exceptions11m
- Paramagnetism and Diamagnetism10m
- Ligands10m
- Complex Ions5m
- Coordination Complexes7m
- Classification of Ligands11m
- Coordination Numbers & Geometry9m
- Naming Coordination Compounds22m
- Writing Formulas of Coordination Compounds8m
- Isomerism in Coordination Complexes15m
- Orientations of D Orbitals4m
- Intro to Crystal Field Theory10m
- Crystal Field Theory: Octahedral Complexes5m
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- Crystal Field Theory: Square Planar Complexes4m
- Crystal Field Theory Summary8m
- Magnetic Properties of Complex Ions9m
- Strong-Field vs Weak-Field Ligands6m
- Magnetic Properties of Complex Ions: Octahedral Complexes11m
2. Atoms & Elements
The Atom
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
How many protons are present in a neutral atom of barium (Ba)?
A
56
B
137
C
34
D
82
Verified step by step guidance1
Identify the element in question, which is barium (Ba).
Recall that the number of protons in a neutral atom is equal to the atomic number of the element.
Look up the atomic number of barium on the periodic table; this number represents the number of protons.
Understand that the atomic number is unique to each element and defines the element's identity.
Conclude that the number of protons in a neutral atom of barium is equal to its atomic number.
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