Questions and Answers
Covalent bonds are formed between what types of elements?
What is the name of the following compound: SiO2?
Silicon dioxide
What orbitals are valence electrons in?
s & p orbitals
How many electron dots correspond to 1 single covalent bond?
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How many electrons are shared in a double covalent bond?
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Describe ionic bonding.
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Describe covalent bonding.
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Write the formula for dinitrogen trioxide.
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Write the formula for iodine trichloride.
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Which part of the atom is most directly involved in covalent bonding?
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How many valence electrons do halogens in Group 17 have?
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Is Al2O3 an ionic compound or a molecule?
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Is NH3 an ionic compound or a molecule?
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Is Br an ionic compound or a molecule?
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What are the characteristics of combustion?
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Is CaF2 a covalently bonded molecule?
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Is hydrogen a metal or a nonmetal?
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Is oxygen a metal or a nonmetal?
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What defines a single covalent bond?
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What are valence electrons?
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Study Notes
Covalent Bonds
- Formed between nonmetals, facilitating electron sharing.
- Valence electrons reside in the s and p orbitals.
Compounds
- Silicon dioxide: Chemical formula SiO2.
- Dinitrogen trioxide: Chemical formula N2O3.
- Iodine trichloride: Chemical formula ICl3.
Electron Sharing
- One single covalent bond involves the sharing of 2 electrons (2 shared electrons).
- A double covalent bond consists of sharing 4 electrons (2 pairs).
Ionic vs. Covalent Bonding
- Ionic bonding: Complete transfer of electrons results in metal cations and nonmetal anions.
- Covalent bonding: Involves sharing electrons without forming ions.
Valence Electrons
- Halogens in Group 17 have 7 valence electrons.
- Valence electrons designate the outermost energy level, crucial for bonding.
Compounds Classification
- Al2O3: Ionic compound (metal aluminum + nonmetal oxygen).
- NH3: Molecular compound formed by nonmetals sharing electrons.
- Br (Bromine): An atom of a single element, not a compound unless in diatomic form (Br2).
Characteristics of Combustion
- Reactants: Molecules of carbon and hydrogen react with O2.
- Products: Carbon dioxide (CO2) and water (H2O) are formed.
Additional Information
- Calcium (Ca) + Fluorine (F) leads to CaF2, classified as an ionic compound (Ca is a metal, F is a nonmetal).
- Hydrogen and oxygen are both nonmetals.
Lewis Structures
- Anticipate questions regarding bonds based on Lewis structures provided in the quizlet.
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Description
Test your knowledge on covalent and ionic bonds through this quiz. Explore concepts including electron sharing, valence electrons, and the classification of various compounds. Perfect for chemistry students looking to reinforce their understanding of bonding principles.
