Polar Molecules

A covalent bond is a chemical bond where two atoms share__________.

• protons

• neutrons

• valence electrons

• the same group on the periodic table

Tags

NGSS.HS-PS1-1

Covalent bonds form between 2 or more atoms of ______________.

• metals

• metaloids

• nonmetals

• I don't know

Tags

NGSS.HS-PS1-1

A molecule that has a partial positive end and a partial negative end because of unequal sharing of electrons is a _______________.

• nonpolar molecule

• polar molecule

• ionic compound

• metalic compound

Tags

NGSS.HS-PS1-3

Polar molecules have

• no charges.

• slight positive and negative charges on opposite ends of the molecules.

• only positive charges.

• either positive or negative charges, but not both.

Phosphorus has an electronegativity value of 2.1. Chlorine's electronegativity value is 3.0. What type of bond will these two elements form?

• ionic

• nonpolar covalent

• polar covalent

• metallic

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Use your knowledge and electronegativity sheet to predict what the following compound is classified as.

• non-polar covalent

• polar covalent

• ionic

• metallic

Tags

NGSS.HS-PS1-1

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

Which atom has the LOWER electronegativity?

• Na

• Li

Tags

NGSS.HS-PS1-2

Calculate ΔEN for Pb-S

• 1.1

• -0.6

• 0.6

• 4.4

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Calculate ΔEN for Na-Br

• 1.9

• 0.9

• 2.8

• 1.0

Tags

NGSS.HS-PS1-1