Unit 3: Chemical Bonding and Electronegativity Concepts

What type of bond is formed between sodium and chlorine in sodium chloride?

• Covalent bond

• Ionic bond

• Metallic bond

• Hydrogen bond

Tags

NGSS.HS-PS1-3

What happens to the energy of atoms when they form chemical bonds?

• Energy increases

• Energy decreases

• Energy stays the same

• Energy fluctuates

Tags

NGSS.HS-PS1-4

Which of the following best describes electronegativity?

• The ability of an atom to lose electrons

• The ability of an atom to gain electrons

• The ability of an atom to attract electrons

   

• The ability of an atom to share electrons

Tags

NGSS.HS-PS1-2

If there is a large electronegativity difference between two atoms, what type of bond is likely to form?

• Covalent bond

• Ionic bond

• Metallic bond

• Hydrogen bond

What is the electronegativity difference in a nonpolar covalent bond?

• 1.7

• Less than 0.4 (Small)

• Large

• Very large

Which of the following elements has the highest electronegativity?

• Sodium

• Chlorine

• Hydrogen

• Magnesium

Tags

NGSS.HS-PS1-2

Which of the following is an example of a diatomic molecule with a nonpolar covalent bond?

• NaCl

• H₂

  ​

• HCl

• H₂O

What type of bond is formed when electrons are shared unequally between atoms?

• Ionic bond

• Nonpolar covalent bond

• Polar covalent bond

• Metallic bond

What happens to an atom when it loses electrons?

• It becomes a negative ion (anion)

• It becomes a positive ion (cation)

• It remains neutral

• It becomes unstable

Tags

NGSS.HS-PS1-2

Which type of bonding involves a "sea of electrons"?

• Ionic bonding

• Covalent bonding

• Metallic bonding

• Hydrogen bonding