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Chemistry Assessment

Total questions: 100

Worksheet time: 3hrs 50mins

Name
Class
Date
1.

What below is NOT considered matter?

a)

Carbon atoms

b)

Gravity

c)

Bacteria

d)

Air

2.

Matter is anything that.....

a)

Has mass and takes up space

b)

Has mass and is visible

c)

Takes up space and has energy

d)

Has energy and is visible

3.

What particle view below is a mixture?

a)

b)

c)

d)

4.

What is the best classification for this substance?

a)

An element

b)

A compound

c)

A mixture

5.

Is this a pure substance?

a)

Yes

b)

No

6.

What is the best classification of this substance?

a)

An element

b)

A compound

c)

A mixture of 2 elements

d)

A mixture of 2 compounds

7.

What is the best classification of this substance? H2SO4

a)

An element

b)

A compound

c)

A mixture

8.

What is an example of a physical property?

a)

Silver is shiny

b)

Alcohols are flammable

c)

Alkali metals are reactive with water

d)

Acids are sometimes corrosive

9.

What is an example of a chemical change?

a)

Tearing paper

b)

Dissolving salt in water

c)

Melting ice

d)

Burning wood

10.

How many different TYPES of ATOMS are in this image?

a)

1

b)

2

c)

3

d)

4

11.

How many valence electrons does Carbon have?

a)

4

b)

5

c)

6

d)

8

12.

A substance with a pH of 8 is a

a)

acid

b)

base

c)

neutral

13.

The type of bond formed when electrons are shared between atoms is a

a)

ionic bond

b)

covalent bond

c)

hydrogen bond

d)

peptide bond

14.

Acids have more ______ ions than bases

a)

OH-

b)

H-

c)

OH+

d)

H+

15.

Chemical reactions start with _____________ and end with _______________

a)

Reactants, Products

b)

Products, Reactants

c)

Substances, Chemicals

d)

Chemicals, Compounds

16.

What is a property you would expect a metal to have?

a)

It will not conduct electricity.

b)

It is dull.

c)

It is brittle.

d)

It is malleable.

17.

What element below is in the same GROUP as Aluminum (13)

a)

Sodium (11)

b)

Thallium (81)

c)

Silicon (14)

d)

Argon (18)

18.

What statement below is true about the periodic table?

a)

The heavier the element, the more likely it is to be a gas.

b)

Elements in the same PERIOD share similar properties.

c)

Elements in the same GROUP share similar properties.

d)

Elements are arranged by date of discovery, from earliest to most recent.

19.

Selenium has atomic number of 34, what does this tell us?

a)

It has a mass of 34.

b)

It has 34 protons.

c)

It has 34 neutrons.

d)

It was the 34th element discovered.

20.

What particles are found in the nucleus of an atom?

a)

Protons and electrons

b)

Electrons and neutrons

c)

Protons and neutrons

d)

Protons, neutrons and electrons

21.

Carbon and Sulfur are examples of...

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Gases

22.
Which of the following is described as the basic unit of matter?
a)
Element
b)
Atom
c)
Molecule
d)
Compound
23.
In the atom diagram shown, E is pointing to
a)
An electron
b)
a proton
c)
a neutron
d)
the nucleus
24.

In this chemical equation, the elements in red are the_______.

a)

Products

b)

Reactants

c)

Subscripts

d)

Coefficients

25.

What is the atomic mass of this atom?

a)

1

b)

3

c)

4

d)

7

26.

Using the information provided, determine how many electrons the a Boron atom contains.

a)

2.5

b)

5

c)

6

d)

10.81

27.

Name for NaH

a)

sodium hydrogen

b)

potassium hydride

c)

sodium hydride

d)

potassium hydrogen

28.

Formula for barium sulfide

a)

B2S3

b)

BaS

c)

Ba2S

d)

BaS2

29.

Name for PBr2

a)

phosphorus bromide

b)

phosphorus dibromide

c)

phosphorus dibromine

d)

phosphorus bromine

30.

Formula for iron (II) carbonate

a)

FeCO3

b)

Fe2CO3

c)

FeCO2

d)

Fe2CO2

31.

Formula for Cobalt (II) bromide

a)

CoBr

b)

Co2Br2

c)

Co2Br

d)

CoBr2

32.

Fill in the blanks with coefficient:

PCl5+_ H2O→_ HCl+H3PO4

a)

4, 5

b)

1, 6

c)

3, 8

d)

2,2

33.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number to the left of a formula.
34.
Balance this equation
_Zn+_HCl-->_ZnCl2 +_H2
a)
1,1,2,1
b)
1,1,1,2
c)
1,2,1,1
d)
2,1,1,1
35.
The blue numbers in the image below represent ________
a)
Charges
b)
coefficients
c)
subscripts
d)
none of the answers are correct
36.
How many Elements are in the compound C2H8O ?
a)
2
b)
1
c)
3
d)
0
37.

A sample of a gas (5.0 mol) at 1.0 atm is expanded at constant temperature from 10.0 L to 15.0 L. The final pressure is ___ atm.

a)

1.5 atm

b)

15 atm

c)

0.67 atm

d)

3.3 atm

e)

7.5 atm

38.

A gas sample is held at constant pressure. The gas occupies 3.62 L of volume when the temperature is 21.6°C. Determine the temperature at which the volume of the gas is 3.42 L.

a)

312K

b)

278K

c)

20.4K

d)

295K

e)

552K

39.
When the temperature is constant (k) inside a balloon, if you add pressure on it, the volume will ..... 
a)
Decrease
b)
Increase
c)
Not Change at all
d)
Particles will solidify 
40.
A 7.50 liter sealed jar at 18 °C contains 0.125 moles of oxygen and 0.125 moles of nitrogen gas. What is the pressure in the container?
a)
7.38 atm
b)
0.796 atm
c)
0.684 atm
d)
0.398 atm
41.
2H2  +   O2  →  2H2O
How many moles of oxygen are consumed if 8 moles H2 are used?
a)
2
b)
4
c)
6
d)
8
42.
For the Balanced Reaction: 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe; What is the Ratio of moles of MgO to moles Fe?
a)
3mol Mg / 2 mol Fe
b)
2 mol Mg/ 3 mol Fe
c)
1 mol Fe/ 2 mol Fe
d)
3 mol MgO / 2 mol Fe
43.
When does a chemical reaction stop?
a)
When the lab is finished
b)
When the excess reactant is used up
c)
When the limiting reactant is used up
d)
Chemical reactions never stop
44.

How many Protons does Lithium have?

a)

1

b)

10

c)

3

d)

7

45.

What isotope is shown here? (Red = protons, gray = neutrons, blue = electrons)

a)

Beryllium-5

b)

Beryllium-9

c)

Boron-4

d)

Boron-9

46.

How many electrons can (maximum) fit in the second energy level of a Bohr Model?

a)

2

b)

4

c)

6

d)

8

47.

Father of modern chemistry; named the atomic theory

a)

Neils Bohr

b)

Ernest Rutherford

c)

John Dalton

d)

Dmitri Mendeleev

48.

Idea that matter cannot be created nor destroyed, but can change from one form to another.

a)

Rutheford's Rule

b)

Mendeleev's Mandate

c)

Law of Conservation of Matter

d)

The Periodic Law

49.

Person that organized the first periodic table

a)

Neils Bohr

b)

Ernest Rutherford

c)

JJ Thomson

d)

Dmitri Mendeleev

50.
There are 4 different types of subshells (orbitals) s,p,d,f.
a)
true
b)
false
51.

What is the correct Lewis Dot Structure for ammonia NH3

a)
b)
c)
d)
52.

How many total valence electrons are participating in bonding in the molecule above?

a)

8

b)

4

c)

2

d)

3

53.

X represents a mystery element. Based on the electron dot diagram, what element could X be?

a)

Mg

b)

Cl

c)

C

d)

O

54.

How would you draw a Lewis dot diagram for Magnesium?

a)
b)
c)
d)
55.
Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?
a)
strongly acidic
b)
slightly acidic
c)
strongly basic
d)
slightly basic
56.

The table shows the pH of several solutions. Which solution is the most acidic?

a)

vinegar

b)

milk

c)

water

d)

bleach

57.

H3PO4 is an example of a ...

a)

acid

b)

base

c)

salt

d)

non-electrolyte

58.

Zn(OH)2 is an example of a...

a)

acid

b)

base

c)

salt

d)

water

59.

Four substances were tested for pH, lemon juice (pH 2), baking soda (pH 9), bleach (pH 12), and milk (pH 6). Which of the following correctly lists the substances from most basic to acidic?

a)

lemon juice, milk, baking soda, bleach

b)

bleach, baking soda, milk, lemon juice

c)

milk, lemon juice, baking soda, bleach

d)

baking soda, bleach, lemon juice, milk

60.
According to which acid-base theory is a base a proton acceptor?
a)
Arrhenius
b)
Bronsted-Lowry
c)
Lewis
61.

Elements in the same group on the Periodic Table have what in common?

a)

They are all a part of the same category (ie. Metals, Metalloids, Nonmetals)

b)

They all have the same number of electrons in their outer shells

c)

They all have the same number of neutrons in their outer shells

d)

Their number of protons increases by one

62.

The horizontal rows on the Periodic Table are referred to as:

a)

Periods

b)

Groups

c)

Bases

d)

Rows

63.

The Atomic Number does NOT help us establish which of the following:

a)

Number of Protons

b)

Number of Neutrons

c)

Number of Electrons

d)

Weight of the atom

64.

The Mass Number tells us:

a)

The number of electrons and protons

b)

The number of electrons and protons

c)

The number of protons and neutrons

d)

The order the elements appear on the Periodic Table

65.

The symbol Fe stands for which element?

a)

Fermium

b)

Fertilizer

c)

Iron

d)

Potassium

66.
What is the picture displayed?
a)
atom
b)
element
c)
molecule
d)
compound
67.
The number at the bottom of each square on the periodic table is the ...
a)
atomic number
b)
atomic mass
c)
chemical symbol
d)
element name
68.
The number at the top of each square on the periodic table is the ...
a)
atomic number
b)
atomic mass
c)
Chemical Symbol
d)
Element Name
69.
a)

stopper

b)

forceps

c)

tripod stand

d)

test tube holder

70.
a)

funnel

b)

test tube

c)

balance

d)

forceps

71.

Used to transfer small amounts of solids

a)

pipette

b)

scoopula

c)

thermometer

d)

pestle

72.

Identify the graduated cylinder:

A
B
C
D
73.

Label the pieces of lab equipment with the correct name:

a)

spot plate (well plate)

b)

mortar & pestle

c)

watch glass

d)

evaporating dish

1
2
3
4
1)
2)
3)
4)
74.

Match the following

a)

1.

test tube clamp

b)

2.

forceps

c)

3.

beaker tongs

d)

4.

crucible tongs

e)

5.

test tube tongs

75.
What is the name of this graph?
a)
line plot
b)
line graph
c)
bar graph
d)
frequency table
76.
The X axis is _______?
a)
vertical
b)
diagonal
c)
criss-cross
d)
horizontal
77.
The Y axis is _______?
a)
Vertical
b)
Horizontal
c)
criss-cross
d)
diagonal
78.

Summarizes information being represented on ANY graph

a)

Title

b)

x axis title

c)

y axis title

d)

z axis title

79.

Legend or key

a)

Helps viewer read the data

b)

Another name for data table

c)

Numbers used on the graph

d)

Colors used on the graph

80.

Pie/circle graphs represent what kind of data

a)

comparison of amounts

b)

shows change over time

c)

shows parts of a whole

d)

spread of the data

81.

Bar graphs represent what kind of data

a)

comparison of amounts

b)

shows change over time

c)

shows parts of a whole

d)

spread of the data

82.

Line graphs represent what kind of data

a)

comparison of amounts

b)

shows change over time

c)

shows parts of a whole

d)

spread of the data

83.

Independent variable is the one controlled by the experimenter ex: time, date, depth, temperature.... and is placed on the _____ axis of a graph

a)

z

b)

y

c)

x

d)

not on a graph

84.

Dependent variable is the data resulting FROM the change made by the experimenter and is placed on the _____ axis

a)

z

b)

y

c)

x

d)

not on a graph

85.

Which column will always be the Y axis?

a)

Left Side

(Water Depth)

b)

Right Side

(Temperature)

86.

Which column will always be the X axis?

a)

Left Side

(Water Depth)

b)

Right Side

(Temperature)

87.

What type of relationship is this?

a)

Direct

b)

Indirect

c)

Static

d)

Cyclic

88.

What type of relationship is this?

a)

Direct

b)

Indirect

c)

Static

d)

Cyclic

89.

What type of relationship is this?

a)

Direct

b)

Indirect

c)

Static

d)

Cyclic

90.

What type of relationship is this?

a)

Direct

b)

Indirect

c)

Static

d)

Cyclic

91.

How many oxygen atoms are represented by the formula Pb(C2O4)2

a)

2

b)

4

c)

6

d)

8

e)

I’m not sure.

92.

Write the name for BF3

a)

boron fluoride

b)

boron trifluoride

c)

triboron trifluoride

d)

boron fluoride tri

e)

I’m not sure.

93.

Write the name for BaCl2

a)

barium chloride

b)

barium dichloride

c)

dibarium dichloride

d)

barium chloride di

e)

I’m not sure.

94.

Write the formula for dinitrogen octachloride

a)

2N 8Cl

b)

N2Cl8

c)

2NCl8

d)

NCl

e)

I’m not sure.

95.

The charge on tin in Sn(SO4)2 is

a)

2-

b)

2+

c)

4+

d)

16+

e)

I’m not sure.

96.

What are the coefficients to balance this equation:


Sr(OH)2 + FeCl3 → SrCl2 + Fe(OH)3

a)

1113

b)

3131

c)

1212

d)

3232

e)

I’m not sure.

97.

Identify the type of reaction: 2Al + 3 CuCl2 → 2 AlCl3 + 3 Cu

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

e)

I’m not sure.

98.

2 HCl + Na2S → 2 NaCl + H2S Using this equation, if 6 moles of HCl react completely, how many grams of H2S would form?

a)

34.06 g

b)

204.6 g

c)

102.2 g

d)

I’m not sure.

99.

What type of reaction does this graph represent?

a)

endothermic

b)

exothermic

c)

isothermic

d)

I’m not sure.

100.

An unknown element is observed. It is solid and metallic, though it can be cut with a knife. When placed in water it reacts violently, exploding into small pieces that appear to be on fire. Which family does this element likely belong to?

a)

alkali metals

b)

transition metals

c)

halogens

d)

noble gases

e)

I'm not sure

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