Free Printable Molecular Compounds TEST

Worksheets

Molecular Compounds TEST

Total questions: 25

Worksheet time: 25mins

Name

Class

Date

What is the molecular formula for dinitrogen pentoxide?

N2O5

N2O4

N2O3

N2O

What is the molecular formula for trisilicon tetranitride?

Si3N4

Si4N3

SiN4

Si2N3

Which following is a molecular compound?

SO₂

K₂O

CaO

BeO

Which of the following is the correct Lewis structure for the compound PBr₃?

structure A

structure B

structure C

structure D

3. Which is a correct Lewis structure for hydrogen cyanide, HCN?

Why is this Lewis Structure incorrect? Choose all that apply.

There are too many bonds around Si.

There should only be single bonds in this Lewis Structure.

The Structure is missing a triple bond.

Chlorine only has 6 electrons surrounding it.

VSEPR theory is to

determine the number of bonding and lone pairs electrons

determine the number of ECC

determine the shape and geometry of molecule

determine the lewis structure of molecule

According to VSEPR, molecules adjust their shapes to keep which of the following as far away as possible?

Pairs of valence electrons

Inner shell electrons

Mobile Electrons

Electrons closest to the nucleus

Which atom in a molecule is the focus of VSEPR theory?

the most electronegative atom

the largest atom

the central atom

the atom with the most valence electrons

10.

What shape best describes the molecular model of $PCl_3$ ?

Trigonal pyramidal

Trigonal planar

Tetrahedral

Bent

11.

Is this molecule polar?

Yes

12.

Is this molecule polar?

Yes

13.

Is this molecule polar?

Yes

14.

If a molecule has any polar bonds, it will always be polar.

True

False

15.

Which of the following geometries could be nonpolar?

bent

tetrahedral

trigonal pyrimidal

none of the above

16.

The electronegativity values for the atoms in the image are shown in blue.

Which of the following is true of CF₄?

CF₄ has polar bonds and is a polar molecule.

CF₄ has polar bonds, but it is a nonpolar molecule.

CF₄ has nonpolar bonds and is a nonpolar molecule.

CF₄ has nonpolar bonds, but it is a polar molecule.

17.

In a polar covalent bond, electrons are shared ___________.

equally

unequally

between non-metals with similar electronegativities

between a metal and a non-metal

18.

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

nonpolar

polar

ionic

19.

When you have H-Cl, what is the polarity?

nonpolar

polar

ionic

20.

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

nonpolar

polar

ionic

21.

Which molecule would have this molecular geometry?

BF₃

CH₄

PCl₅

CO₂

22.

Ionic compounds are bonds between

Metals and Metals

Metals and Nonmetals

Nonmetals and Nonmetals

None of the above

23.

Classify ionic or molecular

C₂H₂

Ionic

Molecular

24.

Classify ionic or molecular

CaO

Ionic

Molecular

25.

What is the formula for Tricarbon Octahydride?

Ca₃O

C₂H₈

C₃H₈

Ca₃H₈

100 %

Molecular Compounds TEST

Total questions: 25

Worksheet time: 25mins

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