2 Forces & Polarity

In covalent bonds, electrons are ___________.

• transferred
• gained
• lost
• shared

Tags

NGSS.HS-PS1-2

In a polar covalent bond, electrons are shared ___________.

• equally
• unequally
• between non-metals with similar electronegativities
• between a metal and a non-metal

In this Lewis structure, the symbol above F means...

• electrons are being transferred to Fluorine
• electrons are less attracted to F than H
• electrons are more attracted to F than H
• Fluorine has formed a cation

Tags

NGSS.HS-PS1-1

This is an example of a __________ bond.

• non-polar covalent
• polar covalent
• ionic
• metallic

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Partial charges like the ones shown here are called:

• dipoles
• deltas
• ions
• magnetic poles

A diatomic molecule like O2 is always_______ because electrons are shared ________.

• nonpolar; equally
• polar; equally
• nonpolar; unequally
• nonpolar; unequally

When you are asked to find bond polarity, compare EN values of each bonding atom to the central atom

• true
• false

Tags

NGSS.HS-PS1-1

Covalent bond is equal sharing of electron. Polar covelent bond is

• unequal sharing of electrons
• different distribution of electrons
• presence of hydrogen bonding
• presence of polar atoms

Define electronegativity

• ability to donate electron
• tendency to lose electron
• tendency to lose electron to its neighbor
• tendency of atom to attract shared electron to itself

Tags

NGSS.HS-PS1-2

Polarity of a molecule is determined by

• shape and charge
• shape and difference in EN value
• difference in EN value and size
• difference in EN value and charges