Q1W2.Polar and Nonpolar molecules

Classify the following molecule.

• polar

• nonpolar

Tags

NGSS.HS-PS1-1

NGSS.HS-PS2-6

The attraction that an atom has for shared electrons in bonds is

• electron affinity.

• electronegativity.

• electropositivity.

• electromagnetism.

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

Excluding the Noble gas family, where on the Periodic Table are the elements with the highest electronegativity located?

• upper right

• lower right

• upper left

• lower left

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following pairs of elements is most likely to form an ionic bond? (You should refer to a Periodic table.)

• sulfur and oxygen

• sulfur and fluorine

• sodium and sulfur

• oxygen and fluorine

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Why is it difficult to wash oil from your hands with plain water?

• Both substances are polar. Like polarities repel.

• Both substances are nonpolar. Like polarities repel.

• Water is nonpolar, and oil is polar, so they will not combine.

• Water is polar, and oil is nonpolar, so they will not combine.

Electronegativity is a measurement of the ability of a nucleus to:

• attract bonding electrons

• attract other nuclei

• attract electrons in the non-valence energy levels

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Why is the molecule nonpolar?

• There are nonbonding pairs on the central atom.

• There are different types of elements bonded to the central atom.

• There are no nonbonding pairs on the central atom and all of the atoms bonded to the central atom are the same.

Is the following molecule polar or nonpolar?

• polar

• nonpolar

Tags

NGSS.HS-PS1-2

NGSS.HS-PS2-6

Why is the molecule polar?

• There is a nonbonding pair on the central atom.

• There are different types of elements bonded to the central atom.

• There are no nonbonding pairs on the central atom and all of the atoms bonded to the central atom are the same.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS2-6