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Benchmark

Total questions: 60

Worksheet time: 2hrs 33mins

Name
Class
Date
1.

Ionic bonds form between ---

a)

nonmetals.

b)

metals and nonmetals.

2.

Covalent bonds form between ---

a)

nonmetals.

b)

metals and metals

c)

metals and nonmetals

3.

What are valence electrons?

a)

sum of the protons and neutrons

b)

protons minus electrons

c)

electrons in the inner shells

d)

electrons in the outer shell

4.

Which of the following is NOT a covalent bond?

a)

K2S

b)

H2O

c)

I2

d)

CO2

5.

Why do chemical bonds form?

a)

so the number of protons equals the number of electrons

b)

to fill the outermost electron level

c)

so an atom can become unstable

6.

The reason that Noble Gases do not react is because

a)

Their outer electron shell is filled

b)

Their inner electron shell is filled

c)

They are able to bond to fill their outer shell

d)

None of the above, Noble Gases are highly reactive

7.
Name the following compound: 
N2O4
a)
dinitrogren tetraoxide
b)
tetranitrogen dioxide
c)
nitrogen oxide
d)
dinitrogen tetraoxygen
8.
Name the following compound: 
CCl4
a)
monocarbon quadchloride
b)
carbon tetrachloride
c)
carbon chloride
d)
monocarbon quadchloide
9.
Na2S
a)

Disodium sulfide

Disodium sulfide

b)
Sodium sulfide
c)
Sodium monosulfide
10.
Atoms gain lose, gain, or ______electrons to get a stable outer energy level.
a)
share
b)
split
c)
create
d)
destroy
11.

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

a)

Polar

b)

nonpolar

c)

Ionic

12.

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

a)

nonpolar

b)

polar

c)

ionic

13.

How would the melting point and boiling point for nonpolar covalent bond?

a)

High

b)

Low

14.

How would the melting point and boiling point for polar covalent bond?

a)

High

b)

Low

15.
Electronegativity is...
a)
how good an atom is at attracting electrons
b)
the ability of an atom to lose electrons
c)
the energy required to remove an electron from a specific atom
d)
how easy it is to make friends. 
16.
Ionic Bonding involves...
a)
The transfer of protons
b)

The sharing of electrons

c)
The transfer of electrons
d)

The sharing of protons

17.

If a molecule is said to be "polar," that means it

a)

has a charge (positive end and negative end)

b)

has no charge

c)

is a white bear

18.

Which is a property shared by most covalent bonds?

a)

high boiling point

b)

high melting point

c)

low melting point

d)

nonpolar bonds

19.

Which of the following is a property of ionic compounds?

a)

Low melting points

b)

Are brittle crystals

c)

Contain no charged particles

d)

Low boiling points

20.

Which of the following terms means that metals can be rolled into thin sheets:

a)

polar

b)

alloy

c)

ductile

d)

malleable

21.

Which of the following groups contains the most reactive elements?

a)

alkali metals

b)

transition metals

c)

noble gases

d)

carbon family

22.

Ionic compounds are electrically

a)

positive

b)

negative

c)

neutral

23.

Density is a ...

a)

Physical Property

b)

Physical Change

c)

Chemical Property

d)

Chemical Change

24.

Slicing a pellet of sodium metal into two pieces is an example of a ...

a)

Physical Property

b)

Physical Change

c)

Chemical Property

d)

Chemical Change

25.

Iron's ability to rust is an example of a ...

a)

Physical Property

b)

Physical Change

c)

Chemical Property

d)

Chemical Change

26.

Flammability is a ...

a)

Physical Property

b)

Physical Change

c)

Chemical Property

d)

Chemical Change

27.

Ice melting is an example of a ...

a)

Physical Property

b)

Physical Change

c)

Chemical Property

d)

Chemical Change

28.

Milk turning sour is an example of a ...

a)

Physical Property

b)

Physical Change

c)

Chemical Property

d)

Chemical Change

29.

Sugars ability to dissolve in water is an example of a ...

a)

Physical Property

b)

Physical Change

c)

Chemical Property

d)

Chemical Change

30.

Water being heated and changed to steam is an example of a ...

a)

Physical Property

b)

Physical Change

c)

Chemical Property

d)

Chemical Change

31.

Cooking scrambled eggs for breakfast is an example of a ...

a)

Physical Property

b)

Physical Change

c)

Chemical Property

d)

Chemical Change

32.

Baking a cake for your friends birthday is an example of a ...

a)

Physical Property

b)

Physical Change

c)

Chemical Property

d)

Chemical Change

33.
When K forms an ionic bond with Br, which of the following occurs?
a)
K gains an electron and Br loses an electron
b)
K and Br both lose electrons
c)
K loses an electron and Br gains an electron
d)
K and Br share a pair of electrons
34.
Valence electrons are the...
a)
innermost electrons
b)
outermost electrons
c)
any electrons
d)
middle electrons
35.

Check all that apply: Which of the following are physical properties?

a)

weighs 5 kg

b)

highly flammable

c)

soft texture

d)

red

e)

reacts with water to form oxygen gas

36.

Check all that apply: Which of the following are chemical properties?

a)

melts at room temperature

b)

burns in air

c)

breaks down to water and oxygen

d)

tastes sour

e)

forms a salt and water

37.

The density of water is 1.0 gram per cubic centimeter.

a)

physical property

b)

chemical property

38.

Gold is not flammable.

a)

physical property

b)

chemical property

39.
Sour Taste: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
40.
What is the correct structure for BF3?
a)
Option A.
b)
Option B. 
c)
Option C.
d)
Option D.
41.

Which is the correct molecular structure for carbon dioxide?

a)
b)
c)
d)
42.

Is this the correct structure for CH2O?

a)

Yes

b)

No

43.
Which of the following is an acceptable Lewis structure for CH3Cl?
a)
Option A
b)
Option B
c)
Option C
d)
Option D
44.

What type of chemical reaction has the following configuration?


Ionic Compound(aq) + Ionic Compound(aq) --> Compound + Compound


AB(aq) + CD(aq) --> AD + BC

a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

45.

Identify the type of chemical reaction pictured above

a)

Composition/Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

46.
In a chemical reaction, everything to the right of the arrow is called ______________.
a)
Products
b)
Yields
c)
Molecules
d)
Reactants
47.
At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?
a)
the product is doubled
b)
the product is half the mass of the reactants
c)
the mass is the same
d)
the mass changes depending on the reaction
48.
Si + S8 --> Si2S4
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Double replacement
49.

What is the mass of one mole of silver?

a)

32.06 g

b)

107.87 g

c)

14.01 g

d)

22.99 g

50.

What is the molar mass of PbSO4?

a)

303.27 g/mol

b)

255.27 g/mol

c)

163.87 g/mol

d)

372.27 g/mol

51.
What is the molar mass of Hydrogen Peroxide (H2O2)?
a)
48 g/mole
b)
34.02 g/mole
c)
36.5 g/mole
d)
35.5 g/mole
52.

How many moles are in 98.3 grams of aluminum hydroxide, Al(OH)3?

a)

1.26 moles

b)

0.8 moles

c)

7,670 moles

d)

1.63 x 10-22 moles

53.

If the molar mass of magnesium (Mg) is 24.305 g/mol, how many grams are in 5 moles of Mg?

a)

121.525 g

b)

24.305 g

c)

121.5 g

d)

122 g

54.

How many moles is in 25.0 g of calcium?

a)

25.0 moles

b)

0.62 moles

c)

1.60 moles

d)

40.0 moles

55.

How many moles is in 25.0 g of calcium?

a)

25.0 moles

b)

0.62 moles

c)

1.60 moles

d)

40.0 moles

56.

Determine the number of moles in 25.0 grams of potassium sulfide (K2S).

a)

0.23 moles

b)

4.41 moles

c)

110.3 moles

d)

25.0 moles

57.
A compound consists of 72.2% magnesium(Mg) and 27.8% nitrogen(N) by mass. What is the empirical formula?
a)
Mg4N3
b)
MgN2
c)
Mg3N2 
d)
MgN
58.
You are given the following percentages: 40.05% S and 59.95% O. Find the empirical formula for these elements.
a)
SO
b)
SO2
c)
SO3
d)
SO4
59.

What percentage of the total atomic mass of magnesium bromide (MgBr2) is composed of magnesium?

a)

13%

b)

43%

c)

63%

d)

87%

60.

What is the molecular formula if the empirical formula is CH2O and the molecular molar mass is 180.18?

a)

CH2O

b)

C2H4O2

c)

C4H8O4

d)

C6H12O6

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