Exploring Bond Formation and Lewis Structures

What is the simplest definition of a chemical bond?

• A force that creates new atoms

• A force that breaks atoms apart

• A force that holds atoms together

• A force that repels atoms

Tags

NGSS.HS-PS1-3

What type of bond is formed when valence electrons are transferred from one atom to another?

• Hydrogen bond

• Covalent bond

• Ionic bond

• Metallic bond

What is electronegativity?

• An atom's ability to repel electrons

• An atom's ability to attract electrons within a chemical bond

• An atom's ability to share electrons equally

• An atom's ability to lose electrons

Tags

NGSS.HS-PS1-1

If the electronegativity difference between two atoms is less than 2.1, what type of bond is likely to form?

• Covalent bond

• Ionic bond

• Hydrogen bond

• Metallic bond

What does a line represent in a Lewis diagram?

• A single electron

• Two electrons being shared by each atom

• A pair of protons

• A pair of neutrons

How many valence electrons does carbon have?

• 6

• 2

• 8

• 4

Tags

NGSS.HS-PS1-1

Which element is an exception to the octet rule and can have fewer than eight electrons?

• Carbon

• Nitrogen

• Beryllium

• Oxygen

How many valence electrons are used to form the bonds in PF5?

• 8

• 10

• 14

• 12

What is the general formula for a fully saturated hydrocarbon?

• C_nH_2n

• C_nH_2n+2

• C_nH_2n-2

• C_nH_2n+4

How many degrees of unsaturation does C3H4 have?

• 3

• 0

• 1

• 2