Hydrogen Bonding

A nitrogen molecule (N₂) has how many covalent bonds between the 2 nitrogen atoms?

• 1
• 2
• 3
• 4

How do you define electronegativity?

• Measure of the tendency of an atom to attract a bonding pair of electrons
• Measure of the tendency of an atom to repel a bonding pair of electrons
• Measure of the attractive force between hydrogen and a neighbouring atom
• Measure of the amount of sharing capability of electrons

Tags

NGSS.HS-PS1-2

Which is the most electronegative atom?

• Helium
• Fluorine
• Chlorine
• Iodine

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

True or false:
A hydrogen bond forms a stronger chemical bond than a covalent bond.

• True
• False

In a water molecule, which atom(s) has/have a partial negative charge?

• Oxygen
• Hydrogen
• None of the atoms
• All of the atoms

Hydrogen bonding occurs in molecules when ___________________.

• a hydrogen atom forms a covalent bond with another atom.
• a hydrogen atom in a molecule forms a bond with any atom.
• a hydrogen atoms form an ionic bond with another atom on an adjacent molecule.
• a hydrogen atom bonded to F, O or N is attracted to an electron pair on a F, O or N atom on an adjacent molecule.

What is the maximum number of hydrogen bonds one molecule of water can form?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-ESS2-5

Ice has ___________ density as compared to water.

• higher
• lower
• the same