Quiz about Covalent bonding Test Review

Question 1

what is the lewis structure for Silicon Tetrahydride

Accepted Answer

Option D is correct

Answer

A.

Answer

B.

Answer

C.

Question 2

what VSEPR shape would CH₂O have?

Accepted Answer

trigonal planar

Answer

tetrahedral

Answer

trigonal pyramidal

Answer

linear

Question 3

what VSEPR shape is this

Accepted Answer

trigonal pyramidal

Answer

bent

Answer

trigonal planar

Answer

tetrahedral

Question 4

polar molecules have

Accepted Answer

dipole moments

Answer

no dipoles

Answer

dipoles

Question 5

nonpolar molecules have

Accepted Answer

no dipoles or dipoles that cancel

Answer

no dipoles

Answer

dipoles

Question 6

what is the lewis structure for SiO₂

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 7

what VSEPR shape is this

Accepted Answer

linear

Answer

tetrahedral

Answer

trigonal planar

Answer

trigonal pyramidal

Answer

bent

Question 8

bent VSEPR shapes have

Accepted Answer

2 lone pairs

Accepted Answer

2 bonded pairs

Answer

4 bonds

Answer

0 unbonded pairs

Answer

3 or 4 bonded pairs

Question 9

Is this molecule polar or non-polar?hint-consider VSEPR first

Accepted Answer

Polar

Answer

Non-polar

Question 10

Is this molecule polar or non-polar?

Accepted Answer

Polar

Answer

Non-polar

Question 11

Is this molecule polar or non-polar?

Accepted Answer

Non-polar

Answer

Polar

Question 12

In covalent bonds, electrons are ___________.

Accepted Answer

shared

Answer

transferred

Answer

gained

Answer

lost

Question 13

In a polar covalent bond, electrons are shared ___________.

Accepted Answer

unequally

Answer

equally

Answer

between non-metals with similar electronegativities

Answer

between a metal and a non-metal

Question 14

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

Accepted Answer

electrons are more attracted to F than H

Answer

electrons are being transferred to Fluorine

Answer

electrons are less attracted to F than H

Answer

Fluorine has formed a cation

Question 15

This is an example of a __________ bond.

Accepted Answer

polar covalent

Answer

non-polar covalent

Answer

ionic

Answer

metallic

Question 16

What geometry will this molecular structure have?: PH₃

Accepted Answer

trigonal pyramidal

Answer

bent

Answer

tetrahedral

Answer

linear

Question 17

What geometry will this molecular structure have?: H₂S

Accepted Answer

bent

Answer

tetrahedral

Answer

linear

Answer

trigonal pyramidal

Question 18

What geometry will this molecular structure have?: CCl₄

Accepted Answer

tetrahedral

Answer

bent

Answer

linear

Answer

trigonal pyramidal

Question 19

Will this molecule be polar or nonpolar? H₂S

Accepted Answer

polar

Answer

nonpolar

Question 20

What is the molecular geometry for this molecule?

Accepted Answer

Trigonal planar

Answer

Bent

Answer

Trigonal pyramidal

Answer

Linear

Question 21

Choose the correct shape for this molecule:

Accepted Answer

Trigonal pyramidal

Answer

Trigonal planar

Answer

Tetrahedral

Answer

Linear

Question 22

Why is the molecule polar?

Accepted Answer

There is a non bonding pair electrons on the central atom.

Answer

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

Answer

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

Question 23

Choose the correct shape for this molecule:

Accepted Answer

Tetrahedral

Answer

linear

Answer

Trigonal pyramidal

Answer

Bent

Question 24

A lone pair is defined as

Accepted Answer

A pair of non-bonding electrons

Answer

A pair of bonding electrons

Answer

One non-bonding electron

Answer

A pair of electrons on the central atom

Question 25

What is the VSEPR theory used to predict?

Accepted Answer

Molecular Shape

Answer

Bond Strength

Answer

Polarity

Answer

Electronegativity

Question 26

Choose the correct shape for this molecule:

Accepted Answer

Tetrahedral

Answer

Trigonal pyramidal

Answer

Bent

Answer

Trigonal planar

Question 27

The electronegativity difference in the bonds of CH4 (methane) is:

Accepted Answer

0.3

Answer

5.9

Answer

0.5

Answer

1.7

Question 28

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

Accepted Answer

polar molecule

Answer

nonpolar molecule

Answer

ionic compound

Answer

metalic compound

Question 29

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

Accepted Answer

polar covalent

Answer

ionic

Answer

nonpolar covalent

Answer

metallic

Question 30

A molecule containing polar covalent bonds is always polar.

Accepted Answer

False

Answer

True

Question 31

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

Accepted Answer

nonpolar; equally

Answer

polar; equally

Answer

nonpolar; unequally

Answer

nonpolar; unequally

Question 32

If Boron bonds with Hydrogen, a ____________ bond forms.

Accepted Answer

nonpolar covalent

Answer

polar covalent

Answer

metallic

Answer

ionic

Question 33

If Bromine bonds with Hydrogen, a ____________ bond forms.

Accepted Answer

polar covalent

Answer

nonpolar covalent

Answer

metallic

Answer

ionic

Question 34

Which formula represents a polar molecule?

Accepted Answer

H2O

Answer

H2

Answer

CO2

Answer

CCl4

Question 35

Choose the correct shape for this molecule:

Accepted Answer

linear

Answer

Trigonal pyramidal

Answer

Bent

Answer

Tetrahedral

Question 36

Choose the correct shape for this molecule:

Accepted Answer

Bent

Answer

linear

Answer

Trigonal pyramidal

Answer

Trigonal planar

Question 37

The polarity of a bond is determined by...

Accepted Answer

The difference in the electronegativities of the two atoms

Answer

The sum of the electronegativities of the two atoms

Answer

The charges of the atoms

Answer

None of the Above

Question 38

Partial charges are present in which type of bond?

Accepted Answer

Polar Covalent

Answer

Ionic

Answer

Nonpolar Covalent

Answer

Both Polar Covalent and Ionic

Question 39

Molecules that contain whole number charges on atoms (+1,-3, etc.) must be...

Accepted Answer

Ionic

Answer

Polar Covalent

Answer

Nonpolar Covalent

Answer

Polar Covalent or Ionic

Question 40

What must the difference in electronegativity between two atoms be in order for the bond between them to be polar covalent?

Accepted Answer

between 0.4 and 1.7

Answer

less than 0.4

Answer

greater than 1.7

Answer

exactly 0

Question 41

What must the difference in electronegativity between two atoms be in order for the bond between them to be nonpolar covalent?

Accepted Answer

less than 0.4

Answer

greater than 1.7

Answer

between 0.4 and 1.7

Answer

exactly 0

Question 42

Order the types of bonds based on the charge of their molecules. (lowest amount of charge to greatest)

Accepted Answer

Nonpolar Covalent --> Polar Covalent --> Ionic

Answer

Polar Covalent --> Ionic --> Nonpolar Covalent

Answer

Ionic --> Nonpolar Covalent --> Polar Covalent

Answer

Ionic --> Polar Covalent --> Nonpolar Covalent

Question 43

When you have Li-O, what is the polarity?

Accepted Answer

ionic

Answer

nonpolar

Answer

polar

Question 44

When you have F-F, what is the polarity?

Accepted Answer

nonpolar

Answer

polar

Answer

ionic

Question 45

Which property of water allows water molecules to stick to other water molecules?

Accepted Answer

cohesion

Answer

adhesion

Answer

capillary action

Answer

surface tension

Question 46

Which property of water allows water molecules to stick to other polar molecules?

Accepted Answer

adhesion

Answer

cohesion

Answer

density

Answer

polarity

Question 47

Which molecule contains bonds with a GREATER polarity?

Accepted Answer

HCl

Answer

CCl4

Question 48

Nonpolar Covalent molecules are usually _____ at room temperature.

Accepted Answer

gases

Answer

solids

Answer

liquids

Answer

aquesous

Question 49

Polar Covalent molecules are usually _____ at room temperature.

Accepted Answer

liquids

Answer

solids

Answer

gases

Answer

aquesous

Question 50

Ionic Compounds are usually _____ at room temperature.

Accepted Answer

solids

Answer

liquids

Answer

gases

Question 51

Ionic Compounds dissolved in water are called:

Accepted Answer

aqueous

Answer

solids

Answer

liquids

Answer

gases

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