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Chemistry 11th Diagnostic Test

Total questions: 105

Worksheet time: 1hrs 3mins

Name
Class
Date
1.

It is a proposed explanation for a phenomenon based on scientific knowledge. It can be either accepted or rejected after an experiment is performed.

a)

Hypothesis

b)

Objective

c)

Analysis

d)

Conclusion

2.

What are the 3 basic subatomic particles?

a)

Proton, electrode, neutron

b)

Photon, electrode, neutron

c)

Proton, electron, neutron

d)

Proton, electron, neutrode

3.

The process of evaporation occurs when a substance goes from

a)

Liquid to solid

b)

Solid to gas

c)

Liquid to gas

d)

Solid to liquid

4.

The temperature at which a substance changes from liquid to gas is called...

a)

Melting point

b)

Boiling point

c)

Flash point

d)

Gas point

5.

How do 2 objects of the same charge interact?

a)

They attract each other

b)

They repel each other

c)

They don't interact

6.

What is the name of the compound we commonly know as "salt"?

a)

Sodium

b)

Sodium chloride

c)

Chloride sodium

7.

It is everything that has mass and volume

a)

Compound

b)

Atom

c)

Matter

d)

Element

8.

A compound is a combination of 2 or more

a)

Atoms

b)

Elements

c)

Electrons

d)

Protons

9.

If the mass of an object is 200g and its volume is 100mL. What is its density?

a)

2 g/mL

b)

0.5 mL/g

c)

2 mL/g

d)

0.5 g/mL

10.

An endothermic reaction is a chemical reaction that requires energy of any form to take place. Which of the following biological reactions is endothermic?

a)

Digestion

b)

Cellular respiration

c)

Photosynthesis

11.

What are the positively charged particles in an atom?

a)

Protons

b)

Neutrons

c)

Electrons

d)

Nucleon

12.

The nucleus of an atom is made up of...

a)

Protons and Neutrons

b)

Neutrons and Electrons

c)

Protons and Electrons

13.

A(n) ____________________ is a pure substance made of a single type of atom and cannot be broken down.

a)

Element

b)

Compound

c)

Molecule

d)

Mixture

14.

What is an element?

a)

Two or more atoms joined together.

b)

One of over 100 types of atoms

c)

Two or more different elements joined together.

d)

A particle with no charge found in the nucleus of an atom.

15.

What is a molecule?

a)

two elements bonded together (sharing electrons)

b)

a mixture of different substances

c)

smallest individual particles

d)

salt mixed in water

16.

What is a compound?

a)

the simplest form of a substance

b)

a combination of 2 or more elements

c)

a combination only of 3 elements

d)

Two substances stuck together with glue.

17.

Which of the following statements regarding subatomic particles is incorrect?

a)

Protons are positively charged particles and neutrons have no charge

b)

In a neutral atom, the number of protons equals the number of electrons

c)

The relative mass of proton, electron and neutron the same

d)

Isotopes of an elements have the same number of protons but a different number of neutrons

18.

The chemical formula of potassium hexacyanoferrate (III) is  K3Fe(CN)6K_3Fe\left(CN\right)_6  . What is the relative formula mass?
RAM [K=39, Fe=56, C= 12, N= 14]

a)

121

b)

199

c)

251

d)

329

19.

The most common chemicals used in our daily life is table salt. What is the chemical term for the table salt?

a)

potassium oxide

b)

potassium chloride

c)

sodium chloride

d)

sodium oxide

20.

Which of the following electron arrangement of an atom has eight electrons valence?

a)

2.6

b)

2.8.8

c)

2.8.2

d)

2.8.8.2

21.

The melting point and boiling point of substance M is -37oC and 5oC respectively. The physical state of substance M at room temperature is

a)

gas

b)

solid

c)

liquid

d)

gas and liquid

22.

 PCl5PCl_5  is a chemical formula of a substance. What is the name of the substance?

a)

Phosphorus pentachloride

b)

Phosphorus chlorate

c)

Phosphorus trichloride

d)

Phosphorus chloride

23.

A solution consists of two parts. One part is the substance that is dissolved. What is the name of this part of a solution?

a)

solvent

b)

solute

c)

solution

d)

oxygen

24.
Mole ratios are obtained from the
a)
balanced chemical equation
b)
periodic table
c)
molar mass
25.
Which of the following is not one of the six forms of energy?
a)
nuclear
b)
thermal
c)
electrical
d)
conduction
26.
What is the name of the reaction in which energy is released?
a)
exothermic
b)
endothermic
c)
physical
d)
chemcial
27.
What is the name of the reaction in which energy is absorbed?
a)
exothermic
b)
endothermic
c)
chemcial
d)
physical
28.
The __________ variable is the one that is manipulated; it's what I change.
a)
independent
b)
dependent
c)
constant
d)
control
29.
The __________ variable is the one that is measured; it "depends" on the change that we made.
a)
independent
b)
dependent
c)
constant
d)
control
30.
This is a well-tested explanation.
a)
Hypothesis
b)
Law
c)
Testable Question
d)
Theory
31.
The factors in an experiment that must remain the same in order to isolate the independent variable.
a)
Control
b)
Constant
c)
Testable questions
d)
Test subjects
32.
The group used for comparison.
a)
Control
b)
Constant
c)
Testable question
d)
Test subjects
33.
Describes a pattern in nature without explaining it.
a)
Theory
b)
Law
c)
Educated Guess
d)
Hypothesis
34.
When measurements/results are all very close together.
a)
Accuracy
b)
Precision
c)
Perfection
d)
Proof
35.

How do we determine the number of atoms of each element in a chemical formula?

a)

count the upper case letters

b)

Fly to the moon

c)

Count he numbers

36.

What does a subscript and coefficient tell us in a chemical formula?

a)

The number of elements

b)

The number of atoms

c)

The amount of mass

d)

The year

37.

How does a chemical equation show that if follows the law of conservation of mass?

a)

same Number of people on each side

b)

all lower cases

c)

The same number of mass and elements on each side of the equation

d)

Tacos

38.

What are the evidences of a chemical reaction?

a)

Gas,light,presipitant,color,temp

b)

Stir

c)

Boom

d)

Dissolves

39.
This term describes what is produced in a chemical reaction.
a)
compounds
b)
chemicals
c)
reactants
d)
products
40.
What type of bond forms between a metal and a nonmetal?
a)
covalent
b)
metallic
c)
ionic
d)
reaction
41.
What type of bond is shown in the picture?
a)
synthetic
b)
metallic
c)
ionic
d)
covalent
42.
Which family/group of elements has a full set of valence electrons and is completely nonreactive? 
a)
Alkali Metals
b)
Noble Gases
c)
Transition metals
d)
Halogens
43.
Which group contains the most reactive nonmetals?
a)
Group 7
b)
Group 8
c)
Group 1
d)
Group 2
44.
Which term describes matter's ability to transfer heat or electricity?
a)
Malleability
b)
Luster
c)
Conductivity
d)
Color
45.
What conclusion can you draw based on the data in the table?
a)
All elements are equally abundant in the solar system.
b)
There is more helium in the solar system than hydrogen.
c)
The abundance of elements increases as you read down the table.
d)
Hydrogen and helium are the most abundant elements in the solar system.
46.

Elements can combine to create molecules and _________ which determine the structure of matter.

a)

atoms

b)

compounds

c)

the periodic table

d)

shells

47.

Matter is anything that has ________ and takes up space.

a)

energy

b)

solids

c)

mass

d)

gases

48.

The state of matter with the highest amount of energy is ______.

a)

solid

b)

liquid

c)

gas

d)

plasma

49.

Which type of energy is used when an object is in motion?

a)

potential energy

b)

kinetic energy

c)

chemical energy

d)

radiant energy

50.

Surrounding the nucleus is a cloud-like region of moving ___________, which are negatively charged.

a)

Protons

b)

Electrons

c)

Neutrons

d)

Molecules

51.

___________ are located inside the nucleus and don’t affect the charge of an atom because they have a charge of zero.

a)

Protons

b)

Electrons

c)

Neutrons

d)

Molecules

52.

Ions that are made of more than one atom are called

a)

ionic compounds

b)

crystals

c)

polyatomic ions

d)

ionic bonds

53.

When an atom loses an electron, it

a)

becomes a negative ion

b)

it becomes a positive ion

c)

forms a covlent bond

d)

gains a proton

54.

Elements that have the same number of valence electrons are

a)

within the same period of the periodic table

b)

within the same group of the periodic table

c)

called a noble gas

d)

called metalloids

55.

A compound that is made up of molecules is called a ___________.

a)

molecular compound

b)

polar compound

c)

nonpolar bond

d)

polar covalent bond

56.

What does the atomic mass represent?

a)

The number of protons plus electrons

b)

The number of protons subtracted from the number of electrons

c)

the number of protons plus the number of neutrons

d)

The number of electrons subtracted from the number of neutrons

57.

What term is used for the electrons in the outermost shell or energy level?

a)

Outer electrons

b)

ions

c)

covalent electrons

d)

valence electrons

58.

Why do atoms of elements have neutral charges?

a)

All atoms contain neutrons which have no charge

b)

The number of protons and the number of neutrons are equal

c)

The number of protons and the number of electrons are equal

d)

The number of neutrons and the number electrons are equal

59.

What type of element typically loses electrons to form a bond?

a)

Metalloid

b)

metal

c)

noble gas

d)

nonmetal

60.

Which of the following occurs during covalent bonding?

a)

Electrons are gained only

b)

Electrons are lost only

c)

Electrons are shared

d)

Electrons are gained and lost

61.

If it is brittle, dissolves easily in water, has a high melting point and conducts electric current it is a(n)

a)

valence electron

b)

ionic compound

c)

covalent compound

d)

sugar

62.

When a metal reacts with a nonmetal it makes

a)

an ionic compound

b)

a covalent compound

c)

a low melting point

d)

water molecule

63.

A compound that can reversibly change color depending on conditions such as pH is called a(n)

a)

indicator

b)

color meter

c)

color changer

d)

water molecule

64.

The properties of bases include a bitter taste and a(n)

a)

strong bond

b)

slippery feel

c)

hydroxide lattice

d)

unpleasant odor

65.

What color does a base change red litmus paper to?

a)

blue

b)

purple

c)

green

d)

orange

66.

What always happens during a chemical change?

a)

The material and its properties change

b)

The material dissolves

c)

The total mass of the material changes

d)

The material changes state from a solid to a liquid

67.

What is the best definition of a chemical change?

a)

A change in the state of matter in which the form changes but the properties stay the same.

b)

A change in the state of matter in which the material changes into an entirely different material with properties that are different from the original material.

c)

A change in the state of matter in which the material is still the same just in a different form.

68.

What is "Conservation of Mass"?

a)

Combination of one or more substances to create one or more different substances

b)

Physical change of state in which identity of the substances remains the same

c)

Law stating that the mass of products equals the mass of reactants

d)

Open system in which some matter escapes

69.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number in front of a chemical formula.
c)
The number in between the chemical symbols.
d)
The number behind a chemical formula.
70.
What is the part of the chemical equation in green called? 
Fe + S --> FeS
a)
products
b)
reactants
c)
yield
d)
chemical formula
71.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
72.
Is this balanced?
Al + O2 → 2Al2O3
a)
Yes
b)
No
73.
What is the little number after an element in a chemical equation called.
Example: H2
a)
Coefficient 
b)
Subscript
c)
Atom
d)
Equation
74.
Which problem is balanced?
(Check ALL answers)
a)
PbO2 + 2H2
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
75.

Balance this equation

_Al +_HCl --> _H2 +_AlCl3

a)

2,6,3,2

b)

it's already balanced

c)

4,12,3,4

d)

2,1,4,5

76.
Pb(NO3)2  +  KI --> PbI2 + KNO3
What type of reaction is this? 
a)
Synthesis 
b)
Decomposition 
c)
Single Replacement
d)
Double Replacement 
77.
__Na  +  O2 ----->  __Na2O
Type of reaction? 
Balance it too. :)
a)
Synthesis, 2Na /  4Na2O
b)
Decomposition, 4Na /  2Na2O
c)
Synthesis, 4Na /  2Na2O
d)
Decomposition, 2Na /  4Na2O
78.
What type of reaction is this?  
__H2O2 ---->  __H2O + O2
a)
Synthesis
b)
Decomposition 
c)
Single Replacement
d)
Combustion 
79.

The coefficient in 3 H2O is

a)

6

b)

5

c)

2

d)

3

80.
What is the right part of a chemical equation called...
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
81.
All organic compounds contain the element
a)
carbon
b)
nitrogen
c)
phosphorus
d)
sulfur
82.

Name for NaH

a)

sodium hydrogen

b)

potassium hydride

c)

sodium hydride

d)

potassium hydrogen

83.

Formula for barium sulfide

a)

B2S3

b)

BaS

c)

Ba2S

d)

BaS2

84.

Name for PBr2

a)

phosphorus bromide

b)

phosphorus dibromide

c)

phosphorus dibromine

d)

phosphorus bromine

85.

Formula for Disilicon Heptasulfide

a)

SiS6

b)

SiS7

c)

Si2S6

d)

Si2S7

86.

When a covalent bond forms _______________ are shared.

a)

protons

b)

nutrons

c)

valence electrons

d)

quarks

87.

What type of elements form covalent bonds?

a)

Metals

b)

Non Metals

c)

Metalloids

d)

Nobel Gas

88.

A ___________________ is the smallest unit of a compound.

a)

atom

b)

proton

c)

electron

d)

molecule

89.

How many valence electrons does Oxygen (O) have?

a)

6

b)

8

c)

15

d)

16

90.

An atom of nitrogen (N) has _______ open bonding sites.

a)

5

b)

4

c)

3

d)

8

91.

Valence electrons are located _____________ the nucleus of an atom

a)

close to

b)

farthest from

c)

randomly around

92.

The weakest covalent bond is a _____________.

a)

single bond

b)

double bond

c)

triple bond

d)

polar bond

93.

Polar substances like water are good at dissolving ___________.

a)

other polar substances

b)

non polar substances

c)

all substances

d)

no substances

94.

A triple covalent bond forms when two atoms share ____________.

a)

2 pair of electrons

b)

4 total electrons

c)

3 pair of electrons

d)

3 total electrons

95.

A substance that slows down or stops a chemical reaction is called a(n)______________.

a)

concentrate

b)

catalyst

c)

inhibitor

d)

product

96.

In which type of reaction do ions in two compounds switch places?

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

97.

The equation is an example of which type of chemical reaction? NaCl + AgF -->NaF + AgCl

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

98.

Which of the following chemical reactions illustrates a decomposition reaction?

a)

4H2 + 2O2 --> 2H2O

b)

2H2O --> 2H2 + O2

c)

6CO2 + 6H2O --> C6H12O6 + 6O2

d)

4KI + 2Cl2 --> 4KCl + 2I2

99.

Which of the following is an example of a single-replacement reaction?

a)

Fe + 2HCl --> FeCl2 + H2

b)

NaOH + HCl --> NaCl + H2O

c)

2Mg + O2 --> 2MgO

d)

2H2O2 --> 2H2O + O2

100.
What Periodic Table family is represented by the Lewis dot diagram?
a)
Halogens
b)
Alkali Metals
c)
Transition Metals
d)
Noble Gases
101.

The elements in this family are soft, silvery, and very reactive with water.

a)

Alkaline Earth Metals

b)

Alkali Metals

c)

Transition Metals

d)

Lanthanides

102.
Gold (Au)
a)
Transition Metal
b)
Alkali Metal
c)
Alkaline Earth Metal
d)
Heavy Metal
103.
Argon (Ar)
a)
alkali metal
b)
alkaline earth metal
c)
halogen
d)
noble gas
104.
An atom that has the electron configuration of 1s22s22p63s23p64s23d5 is classified as
a)
A transition element
b)
a noble gas
c)
an alkali metal
d)
an alkaline earth metal
105.
Which of the following in not a diatomic element?
a)
hydrogen
b)
carbon
c)
nitrogen
d)
oxygen

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