Covalent and Ionic Bonds Quiz
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Questions and Answers

Covalent bonds are formed between what types of elements?

  • Metals + metals
  • Noble gases + nonmetals
  • Nonmetals + nonmetals (correct)
  • Metals + nonmetals

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?

<p>2</p> Signup and view all the answers

How many electrons are shared in a double covalent bond?

<p>4</p> Signup and view all the answers

Describe ionic bonding.

<p>Involves a complete transfer of electrons.</p> Signup and view all the answers

Describe covalent bonding.

<p>Involves sharing of electrons between nonmetal atoms.</p> Signup and view all the answers

Write the formula for dinitrogen trioxide.

<p>N2O3</p> Signup and view all the answers

Write the formula for iodine trichloride.

<p>ICl3</p> Signup and view all the answers

Which part of the atom is most directly involved in covalent bonding?

<p>Valence electrons</p> Signup and view all the answers

How many valence electrons do halogens in Group 17 have?

<p>7</p> Signup and view all the answers

Is Al2O3 an ionic compound or a molecule?

<p>Ionic compound (A)</p> Signup and view all the answers

Is NH3 an ionic compound or a molecule?

<p>Molecular compound (B)</p> Signup and view all the answers

Is Br an ionic compound or a molecule?

<p>Ionic compound (B)</p> Signup and view all the answers

What are the characteristics of combustion?

<p>A molecule with carbon and hydrogen reacts with oxygen, producing CO2 and H2O.</p> Signup and view all the answers

Is CaF2 a covalently bonded molecule?

<p>No (B)</p> Signup and view all the answers

Is hydrogen a metal or a nonmetal?

<p>Nonmetal</p> Signup and view all the answers

Is oxygen a metal or a nonmetal?

<p>Nonmetal</p> Signup and view all the answers

What defines a single covalent bond?

<p>2 shared electrons</p> Signup and view all the answers

What are valence electrons?

<p>Electrons in the outermost shell of an atom.</p> Signup and view all the answers

Flashcards

Covalent bond elements

Nonmetals share electrons to form covalent bonds.

SiO2 name

SiO2: One silicon atom and two oxygen.

Valence electron orbitals

Electrons in the outermost s and p orbitals.

Single covalent bond dots

Two electron dots represent one shared pair.

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Double covalent bond

Four electrons are shared.

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Ionic bonding

Electrons are transferred from one atom to another.

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Covalent bonding

Atoms share electrons instead of transferring them.

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Dinitrogen trioxide formula

Two nitrogen atoms and three oxygen atoms.

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Iodine trichloride formula

One iodine atom and three chlorine atoms.

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Covalent bonding part of atom

Valence electrons are involved.

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Halogens valence electrons

Seven valence electrons.

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Al2O3 ionic or molecule?

An ionic compound.

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NH3 ionic or molecule?

A molecular compound.

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Br ionic or molecule?

Ionic compound.

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Combustion characteristics

A compound reacts with oxygen to produce carbon dioxide and water.

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CaF2 a molecule?

No, CaF2 is an ionic compound.

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Hydrogen: metal or nonmetal?

Hydrogen is a nonmetal.

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Oxygen: metal or nonmetal?

Oxygen is a nonmetal.

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Single covalent bond definition

Two electrons being shared between two atoms.

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Valence electrons defined

Electrons in the outermost shell.

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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.

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