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

different distribution of electrons

Define electronegativity

tendency of atom to attract shared electron to itself

tendency to lose electron to its neighbor

Polarity of a molecule is determined by

shape and difference in EN value

difference in EN value and size

difference in EN value and charges

CCl 4 has polar bonds but is a non polar molecule. Why?

bond polarity between atoms cancel

bond polarity exist between atoms

dipole moment exist between atoms in molecule

difference in EN between C and Cl

HCCl 3 is a polar molecule with polar bonds. Why?

net dipole moment exist between atoms in molecule

bond polarity between atoms cancel

difference in EN between C and Cl

CO 2 has polar bonds but is a NON POLAR molecule. Why?

bond polarity between C and O atoms cancel

net dipole moment exist between atoms in molecule

bond polarity exist between C + and O -

Which of the following is FALSE about intermolecular forces between molecules?

Must have permanent dipole moment before it can exist

It is also called London or Van Der Waals forces

Dipole dipole attraction between molecule

Also due to instantaneous dipole attraction between molecule

The following statement is true for hydrogen bonding EXCEPT

Hydogen bonding is stronger than covalent bonding

It is a dipole dipole forces of attraction

Electronegative element like N, O and F must be present

ESF attraction bet H atom with lone pair electron from N,O,F

Why BCI 3 is non polar while NCI 3 is polar?

BCI 3 is symmetrical and bond polarity cancel

BCI 3 is symmetrical and bond polarity exist

BCI 3 does not have polar bonds, while NCI 3 does

BCI 3 is asymmetrical and bond polarity exist

What explains the very high melting and boiling point of water

Strong hydrogen bonds between water molecules

Strong dipole-dipole bonds between water molecules

Dispersion forces which are present in all molecules

Asymmetrical shape of the polar bonds.

The two (2) factors that determine if a molecule is Polar or Non-polar:

the type of atoms in the molecule

Which of the following statements correctly compares the behavior of a mixture of ethanol and water at STP?

Ethanol will evaporate first, because it has weaker intermolecular forces

Water will evaporate first, because it has weaker intermolecular forces

Ethanol and water will evaporate simultaneously

The aqueous solution will evaporate partially at a temperature between the boiling points of water and of ethanol

Which of the following statements correctly explains why hydrogen bonding is such a strong intermolecular force?

There is an attraction between a small, weakly electronegative hydrogen atom and a large, strongly electronegative atom of fluorine, nitrogen, or oxygen

There is an attraction between a small, highly electronegative hydrogen atom and a large, highly electronegative fluorine atom

There is an attraction between the hydrogen and oxygen atoms, only

There is an attraction between the hydrogen and nitrogen atoms, only

Which statement correctly describes NaCl?

It is ionic, and its charges are distributed unevenly

Its charge is evenly distributed

2 Forces & Polarity Quiz

29 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In covalent bonds, electrons are ___________.

transferred

gained

lost

shared

Tags

NGSS.HS-PS1-2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a polar covalent bond, electrons are shared ___________.

equally

unequally

between non-metals with similar electronegativities

between a metal and a non-metal

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

This is an example of a __________ bond.

non-polar covalent

polar covalent

ionic

metallic

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Partial charges like the ones shown here are called:

dipoles

deltas

ions

magnetic poles

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A diatomic molecule like O2 is always_ because electrons are shared __.

nonpolar; equally

polar; equally

nonpolar; unequally

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

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2 Forces & Polarity

In covalent bonds, electrons are ___________.

In a polar covalent bond, electrons are shared ___________.

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

This is an example of a __________ bond.

Partial charges like the ones shown here are called:

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

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

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

Define electronegativity

Polarity of a molecule is determined by

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A diatomic molecule like O2 is always_ because electrons are shared __.