Chemical Bonding Quiz

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Questions and Answers

Which statement about the Bohr atomic model is NOT true?

Electrons can absorb or emit radiation.

Hydrogen consists of a positively charged nucleus.

Electrons are fixed in their circular orbits. (correct)

Energy levels of electrons in given orbits are quantized.

What occurs when an electron moves from a higher energy level to a lower energy level?

The atom's temperature increases.

Colored light is emitted. (correct)

Another electron moves to a higher level.

The atom becomes unstable.

Which of the following compounds exhibits an ionic bond?

O₂

Mg-Mg

KBr (correct)

H₂O

Which property is the most suitable for determining the type of bond between atoms?

Electronegativity Signup and view all the answers

Which type of bond is characterized by the sharing of electron pairs between atoms?

Covalent bond Signup and view all the answers

Which type of bond is characterized by the equal sharing of electrons between atoms?

Nonpolar covalent bond Signup and view all the answers

What is the primary reason that atoms form chemical bonds?

To achieve a stable electron configuration Signup and view all the answers

Which of the following substances is most likely to conduct electricity when dissolved in water?

Monosodium glutamate Signup and view all the answers

Which electronic configuration indicates an element that is likely to lose electrons easily?

1S2 2S1 Signup and view all the answers

Which type of bond is formed when there is a transfer of electrons from a metallic element to a non-metallic element?

Ionic bond Signup and view all the answers

What is the molar mass of Glucose (C6H12O6)?

180.156 g/mol Signup and view all the answers

Which type of particle is formed from covalent bonding?

Molecule Signup and view all the answers

How many moles are present in 140.10 g of Nitrogen gas (N2)?

5.00 mol Signup and view all the answers

Which element from the provided electron configurations has the highest tendency to gain electrons?

1S2 2S2 2p6 3S2 3p6 4S2 3d10 4p5 Signup and view all the answers

What is the representative mass of Carbon Dioxide (CO2) for 2.5 moles?

110.025 g Signup and view all the answers

What type of bond is expected to have the highest electrical and thermal conductivity?

Metallic bond Signup and view all the answers

In the diatomic molecule N2, how many nonpolar covalent bonds are formed?

1 Signup and view all the answers

What is the molar mass of Magnesium Hydroxide (Mg(OH)2)?

58.33 g/mol Signup and view all the answers

Study Notes

Chemical Bonding and Properties of Substances

Ionic bonds form between metals and nonmetals. A metal atom loses electrons to a nonmetal atom, forming positive and negative ions that are attracted to each other.
Metallic bonds occur between metal atoms. The valence electrons are delocalized, creating a "sea" of electrons that hold positively charged metal ions together. This structure is responsible for metals being malleable and ductile.
Polar covalent bonds form between two nonmetals that share electrons unequally. This unequal sharing creates a dipole moment, with one atom having a partial positive charge and the other a partial negative charge. Water (H₂O) is an example of a molecule with polar covalent bonds.
Nonpolar covalent bonds form when two nonmetals share electrons equally. No dipole moment is created. In these bonds, electronegativity difference is low. Oxygen gas (O₂) is an example.

Lewis Dot Symbols

Lewis dot symbols are used to represent the valence electrons of atoms. These dots show how many electrons are available for bonding.

Types of Compounds

Ionic compounds are formed by ionic bonds.
Molecular compounds are formed by covalent bonds. These compounds are non-polar or polar, depending on the electronegativity difference between atoms.

Compound Properties

Nonpolar molecules do not have a positive or negative end and do not readily dissolve in water.
Polar molecules have a positive and negative end and readily dissolve in water. They are attracted to water molecules through dipole-dipole interactions.
Metallic bonding is responsible for the properties of metals. Metals are conductive, malleable, and ductile.

Atomic Properties and Bonding

The properties of the atoms (atomic size, electronegativity, ionization energy, electron affinity) influence the type of bond that forms between atoms. Electronegativity differences determine the polarity of covalent bonds.

Atomic Structure and Radiation

Electrons can move between energy levels in an atom, and when they do so, they emit or absorb energy in the form of light. The energy of the emitted/absorbed light is related to the energy difference between the levels.

Chemical Reactions

Atoms react to achieve greater stability. This can involve gaining, losing, or sharing electrons.

Electrical Conductivity

Some substances conduct electricity when dissolved in water, while others do not. Substances that carry an electrical charge when dissolved in water are typically ionic compounds.

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Description

Test your knowledge on ionic, metallic, polar, and nonpolar covalent bonds, along with Lewis dot symbols. Understand how these bonds form and their properties. Perfect for chemistry students looking to reinforce their understanding of bonding concepts.