Water Polarity

Oil does not dissolve in water because

• due to their densities

• oil is polar and water is nonpolar

• oil is nonpolar and water is polar

Ionic substances dissolve in polar substances

• True

• False

When sodium chloride dissolves in water the sodium will be attracted to​ ​ the (a)   part of water and the chlorine ion will be attracted to the ​ (b)   part of water

• oxygen

• hydrogen

Tags

NGSS.MS-PS1-2

Polar substances dissolve ​ (a)   and nonpolar substances dissolve​ (b)  

• other polar and ionic substances

• nonpolar substances

• any type of substance

Are covalent compounds always soluble in water?

• Yes

• No

• Sometimes

• Never

What type of bond is shown in the molecular structure of water?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond

Which molecule contains bonds of GREATER polarity?

• H₂O

• OF₂

Tags

NGSS.HS-PS1-1

A bond with a partially negative end and a partially positive end is:

• ionic

• polar

• non-polar

• isometric

What is the primary reason water is considered a polar molecule?

• The oxygen atom is more electronegative than the hydrogen atoms

• The hydrogen atoms are more electronegative than the oxygen atom

• Water has a linear molecular shape

• Water is a nonpolar solvent

Which of the following substances is most likely to dissolve in water?

• Methane (CH4)

• Sodium chloride (NaCl)

• Hexane (C6H14)

• Carbon tetrachloride (CCl4)