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Question 1

What is the definition of a covalent bond?

Answer 1

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.

Question 2

True or False: Ionic bonds occur between metals and non-metals.

Answer 2

True

Question 3

Fill in the blank: The type of bonding that occurs when electrons are transferred from one atom to another is called __________.

Answer 3

ionic bonding

Question 4

What is the primary characteristic of metallic bonding?

Answer 4

Metallic bonding is characterized by a sea of delocalized electrons that are free to move around, allowing metals to conduct electricity.

Question 5

Which type of bond is typically formed between two nonmetals?

Answer 5

Covalent bond

Question 6

What is the difference between polar and nonpolar covalent bonds?

Answer 6

Polar covalent bonds involve unequal sharing of electrons, while nonpolar covalent bonds involve equal sharing.

Question 7

Multiple Choice: Which of the following is an example of an ionic compound? A) H2O B) NaCl C) CO2 D) CH4

Answer 7

B) NaCl

Question 8

What is the term used to describe the energy required to break a bond?

Answer 8

Bond dissociation energy

Question 9

True or False: All ionic compounds are soluble in water.

Answer 9

False

Question 10

What is the VSEPR theory used for?

Answer 10

VSEPR theory is used to predict the shape of molecules based on the repulsion between electron pairs.

Question 11

Fill in the blank: A molecule with a tetrahedral shape has __________ bonding pairs of electrons around the central atom.

Answer 11

four

Question 12

What is the bond angle in a trigonal planar molecule?

Answer 12

120 degrees

Question 13

Which type of bond is characterized by overlapping p orbitals?

Answer 13

Pi bond

Question 14

Multiple Choice: Which of the following molecules has a linear shape? A) NH3 B) CO2 C) H2O D) CH4

Answer 14

B) CO2

Question 15

What type of intermolecular force is present in polar molecules?

Answer 15

Dipole-dipole interactions

Question 16

True or False: Hydrogen bonds are a type of dipole-dipole interaction.

Answer 16

True

Question 17

What is the octet rule?

Answer 17

The octet rule states that atoms tend to form bonds in such a way that they have eight electrons in their valence shell.

Question 18

Fill in the blank: The shape of a molecule can be determined using __________ theory.

Answer 18

VSEPR

Question 19

What is the significance of resonance structures?

Answer 19

Resonance structures demonstrate that some molecules can be represented by two or more valid Lewis structures.

Question 20

Multiple Choice: Which of the following is a characteristic of ionic compounds? A) High melting points B) Poor conductivity in solid state C) Brittle D) All of the above

Answer 20

D) All of the above

Question 21

What type of bond forms between two atoms of the same element?

Answer 21

Nonpolar covalent bond

Question 22

True or False: A molecule with a symmetrical shape is always nonpolar.

Answer 22

False

Question 23

What is the formula for calculating formal charge?

Answer 23

Formal charge = Valence electrons - (Nonbonding electrons + 1/2 Bonding electrons)

Question 24

Fill in the blank: The __________ of an atom is determined by the number of protons in its nucleus.

Answer 24

atomic number

Question 25

What type of hybridization is present in methane (CH4)?

Answer 25

sp3 hybridization

Question 26

Multiple Choice: Which of the following has the highest electronegativity? A) F B) Cl C) Br D) I

Answer 26

A) F