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EL Physical science part 2 midterm review

Total questions: 119

Worksheet time: 3hrs 38mins

Name
Class
Date
1.

How many VALENCE ELECTRONS does Chlorine have?

a)

2

b)

7

c)

8

d)

10

e)

17

2.

Ionic bonds are formed when electrons get

a)

Shared between two atoms

b)

Removed from both atoms

c)

Transferred from one atom to another

d)

Added to both atoms

3.

Ionic bonds typically form between

a)

A metal and a nonmetal

b)

Two nonmetals

c)

Two metals

d)

A metalloid and a metal

4.

What is the correct formula for Sodium Chloride?

a)

SCl

b)

NaCl

c)

SC

d)

NaCl2

5.

Name this ionic compound: Al2O3

a)

Dialuminum oxide

b)

Aluminum oxygen

c)

Oxygen Aluminide

d)

Aluminum oxide

6.

Cations _______ electrons, becoming _______ charged.

a)

Gain; positively (+)

b)

Gain; negatively (-)

c)

Lose; positively (+)

d)

Lose; negatively (-)

7.

Anions ____ electrons, becoming _____ charged.

a)

Gain; positively (+)

b)

Gain; negatively (-)

c)

Lose; positively (+)

d)

Lose; negatively (-)

8.

Write the chemical formula for a compound formed by K and Br (potassium bromide).

a)

KBr

b)

K2Br

c)

KBr3

d)

KBr2

9.

Metals (like Na) typically _____ electrons in the formation of ionic bonds.

a)

Gain

b)

Lose

c)

Keep the same

10.

Nonmetals (like Cl) typically ____ electrons when they form ionic bonds.

a)

Gain

b)

Lose

c)

Keep the same

11.

Using the model for the formation of Scandium Fluoride (an ionic compound), can you guess its chemical formula?

a)

Sc3F

b)

Sc3F3

c)

Sc+3F-1

d)

ScF3

12.

In formation of ionic compounds, the electrons from a particular atom are transferred so that the atom can attain stable configuration of a noble element. What noble configuration does Sodium ion attain?

a)

Hellium

b)

Neon

c)

Argon

d)

Krypton

13.

The name of FeCl₂ is

a)

iron chloride

b)

iron (II) chloride

c)

iron (I) chloride

d)

iron dichloride

14.

LiBr is called

a)

lithium bromine

b)

lithium (I) bromine

c)

lithium bromide

d)

lithuim (I) bromide

15.

Name the ionic compound SnSe2

a)

Tin diselenide

b)

Tin (IV) Selenide

c)

Tin selenide

d)

Tin (II) triselenide

16.

Name the following ionic compound: Cs2S

a)

cesium sulfide

b)

cesium sulfate

c)

cesium II sulfate

d)

cesium II sulfide

17.

When naming ionic compounds with transition metals you need to include roman numerals to show the _____ of the metal..

a)

atomic number

b)

mass number

c)

charge

d)

ionization energy

18.

When naming a compound, which of these is written first?

a)

Metal

b)

Nonmetal

c)

Anion

d)

Cation

19.

What is the name of the compound Na2(SO4)?

a)

Sodium sulfate

b)

Sodium sulfide

c)

Sodium sulfite

d)

Sodium sulfuroxide

20.

What is the name of the compound Sc(OH)3?

a)

Scandium (III) hydroxide

b)

Scandium (I) hydroxide

c)

Scandium (II) hydroxide

d)

Scandium hydroxide

21.

The name of the compound Ca3(PO4)2

a)

calcium phosphate

b)

tricalcium diphosphate

c)

calcium phosphorus oxide

d)

calcium phosphide

22.

By looking at the formula of an ionic compound, we can determine the charge (oxidation state) of a transition metal.

a)

True

b)

False

23.

What is the charge of Cobalt (III)

a)

3+

b)

2+

c)

8+

d)

3-

24.

What is the correct formula for Aluminum Suflite

a)

Al2SO4

b)

Al2SO3

c)

Al2(SO4)3

d)

Al2(SO3)3

25.
What is the chemical formula for Phosphorus Pentachloride?
a)
PCl
b)
PCl3
c)
PCl5
d)
P5Cl
26.
What is the name of C3Cl8 ?
a)
Carbon octachloride
b)
Tricarbon octachloride
c)
Carbon trichloride
d)
Octacarbon trichloride
27.
What is the name of N2O3
a)
Nitrogen trioxide
b)
Dinitrogen oxide
c)
Dinitrogen trioxide
d)
Nitrogen oxide
28.

What type of chemical bond is being shown in the F2 molecule?

a)

single covalent bond

b)

double covalent bond

c)

triple covalent bond

d)

quadruple covalent bond

29.

The element nitrogen (N) has ___ valence electrons and needs ___ electrons to complete its octet.

a)

5 , 3

b)

3 , 5

c)

6 , 2

d)

2 , 6

30.

Atoms form bonds in order to have an electron configuration similar to a ___________.

a)

noble gas

b)

alkali metal

c)

friend

d)

neighbor

31.
Which of these would be covalently bonded
a)
Fr and K
b)
Sc and O 
c)
F and Cl
d)
He and Pt
32.
Which of the following is a Diatomic Molecule 
a)
K2
b)
C2
c)
S2
d)
N2
33.

Which of the following elements will make 3 covalent bonds?

a)

Oxygen

b)

Phosphorous

c)

Fluorine

d)

Germanium

34.

How many Valence Electrons does Oxygen have?

a)

2

b)

7

c)

6

d)

1

35.
The number of bonds an element will form in a covalent compound will be equal to
a)
the number of valence electrons
b)
eight electrons
c)
the number of electrons needed to reach an octet
d)
the group number
36.
What is a diatomic element?
a)
a metal bonded with a nonmetal
b)
2 or more nonmetals bonded together
c)
2 or more metals bonded together
d)
2 atoms of the same element bonded together
37.

What types of atoms make a covalent bond?

a)

2 Nonmetals

b)

1 Nonmetal & 1 Metal

c)

2 Metals

d)

2 Noble Gases

38.
How many electrons should Carbon have around its Lewis dot structure?
a)
1
b)
3
c)
4
d)
5
39.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
40.
Cu(OH)2
a)
Copper (II) hydroxide
b)
Copper (I) hydroxide
c)
Copper (II) hydride
d)
Copper (I) hydride
41.
Mg(OH)2
a)
magnesium hydroxide acid
b)
hydromagnesium acid
c)
magnesium oxygen hydride
d)
magnesium hydroxide
42.
The chemical formula for tin (IV) oxide is written
a)
Sn2O4
b)
Ti2O4
c)
SnO2
d)
TiO2
43.
zinc fluoride
a)
ZnF2
b)
ZnF
c)
Zn2F
d)
Zn2F4
44.
The correct name of Cu₃N₂ is
a)
copper (III) nitride
b)
copper (II) nitride
c)
copper nitride
d)
tricopper dinitride
45.

What is the name of Br6F10 ?

a)

Bromium fluoride

b)

Hexabromine fluoride

c)

Bromium decafluoride

d)

Hexabromine decafluoride

46.

What is the name of this compound C3Cl10 ?

a)

Tricarbon Decachloride

b)

Carbon Chloride

c)

Decacarbon Trichloride

d)

Carbon (III) Chloride

47.

What is the chemical name of Ag2O?

a)

Disilver monoxide

b)

Silver (II) Oxide

c)

Silver (I) Oxide

d)

Silver Oxide

48.

What is the chemical name for MnCl3?

a)

Manganese (I) Chloride

b)

Manganese Trichloride

c)

Manganese Chloride

d)

Manganese (III) Chloride

49.

What is the chemical formula for Dinitrogen Trioxide?

a)

N3O2

b)

NO

c)

N6O5

d)

N2O3

50.

What is the chemical formula for Tetrasulfur Pentoxide?

a)

SO

b)

S5O4

c)

S4O5

d)

S3O7

51.
What coefficient should be used to make the following equation balanced?
N2+O2--> _NO 
a)
1
b)
2
c)
3
d)
4
52.

Which equation is balanced?

a)

PbO2 + 2H2

b)

SO2 + H20 --> H2SO4

c)

2Na + 2H2O --> 2NaOH + H2

53.

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

54.

What are the coefficients that would properly balance this equation?

__Ca + __H2O --> __Ca(OH)2 + __H2

a)

2,1 --> 2,1

b)

1,2 --> 1,1

c)

1,2 --> 2,4

d)

1,2 --> 2,1

55.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__CO + __Fe2O3--> __Fe + __CO2
a)
3,1 --> 2,3
b)
3,2 --> 1,1
c)
3,2 --> 2,4
d)
3,2 --> 2,1
56.

What are the coefficients that would properly balance this equation?

__AgNO3 + __H2S --> __Ag2S+ __HNO3

a)

2,1 --> 1,2

b)

1,2 --> 1,1

c)

1,2 --> 1,2

d)

1,2 --> 2,1

57.

What are the coefficients that would properly balance this equation?

__H2 + __S --> __H2S

a)

1,1 --> 1

b)

2,2 --> 2

c)

1,2 --> 1

d)

1,2 --> 2

58.

What are the coefficients that would properly balance this equation?

__Al + __O2--> __Al2O3

a)

4,1 --> 2

b)

4,3 --> 4

c)

3,4 --> 1

d)

4,3 --> 2

59.

Determine the coefficients to make the following equation balanced?

__N2 + __O2--> __NO

a)

1, 1, 1

b)

1, 1, 2

c)

2, 2, 2

d)

1, 2, 2

60.

Determine the coefficients to balance the 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

61.

Balance the the following 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

62.

What type of reaction is the equation C + O2 → CO2?

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

63.

What type of reaction is the equation


2NaCl → 2Na + Cl2?

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

64.

What type of reaction is the equation

Cu + 2Ag(NO3) → 2Ag + Cu(NO3)

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

65.

What type of reaction is the equation


MgCl2 + Li2CO3 → MgCO3 + 2 LiCl

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

66.

What type of reaction is the equation


3Pb + 2H3PO4 → 3H2 + 1Pb3(PO4)2

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

67.

What type of reaction is the equation

3 HBr + 1 Al(OH)3 → 3 H­2O + 1 AlBr3

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

68.

What type of reaction is the equation

2 RbNO3 + BeF2 → Be(NO3)2 + 2 RbF

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

69.

What type of reaction is the equation

P4 + 3 O2 → 2 P2O3

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

70.

What equation has the following general formula:

AB → A + B

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

e)

Combustion

71.

What equation has the following general formula:

AB + CD → CB + AD

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

e)

Combustion

72.

What equation has the following general formula:
CxHy + O2 →  CO2 + H2O  + EC_xH_y\ +\ O_2\ \rightarrow\ \ CO_{2\ }+\ H_2O\ \ +\ E  

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

e)

Combustion

73.

What type of equation is shown by the following:
C11H24+17O2  →  11CO2 + 12H2O + EC_{11}H_{24}+17O_2\ \ \rightarrow\ \ 11CO_2\ +\ 12H_2O\ +\ E  

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

e)

Combustion

74.
Fill in the blanks with coefficient:
PCl5+_ H2O→_ HCl+H3PO4
a)
4, 5
b)
1, 6
c)
3, 8
d)
2,2
75.
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
76.
Balance this equation.
_Mg + _Cl2 --> _MgCl2
a)
1, 2,1
b)
already balanced
c)
2,1,1
d)
1,1,2
77.
Balance this equation
_N2 + _H2 --> _NH3
a)
1,2,3
b)
1,3,2
c)
1,1,2
d)
2,1,1
78.

What type of reaction is the equation


2NaCl → 2Na + Cl2?

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

79.

What type of reaction is the equation

Cu + 2Ag(NO3) → 2Ag + Cu(NO3)

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

80.

What type of reaction is the equation


MgCl2 + Li2CO3 → MgCO3 + 2 LiCl

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

81.
When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced
a)
charge
b)
subscript
c)
random number
d)
coefficient
82.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction. 
83.
What is the little number after an element in a chemical equation called.
Example: H2
a)
Coefficient 
b)
Subscript
c)
Atom
d)
Equation
84.
Balance this equation.
_CF4 + _Br2 -- _CBr4 + _F2
a)
2,1,2,1
b)
1,2,2,1
c)
1,2,1,2
d)
2,2,2,2
85.
Which problem is balanced?
a)
PbO2 + 2H2
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
86.

Identify the type of reaction:

ZnCl2 + Mg --> Zn + MgCl2

a)

Precipitate

b)

Single Replacement

c)

Double Replacement

d)

Decomposition

87.

Identify the reaction type for the following equation:

K + F2 --> KF

a)

Double replacement

b)

Single Replacement

c)

Synthesis

d)

Decomposition

88.

Identify the reaction type:

C2H6 + O2 --> CO2 + H2O

a)

Double replacement

b)

Synthesis

c)

Acid base

d)

Combustion

89.

What is the type of reaction shown above?

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

90.
One reactant into several products.
a)
Decomposition
b)
Synthesis
c)
Combustion
d)
Single Replacement
91.
Two Reactants and One Product
a)
Decomposition
b)
Synthesis
c)
Combustion
d)
Single Replacement
92.
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
93.
When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced
a)
charge
b)
subscript
c)
random number
d)
coefficient
94.

Which side of a chemical equation is the product side?

a)
Left (before the yields sign)
b)
Right (after the yields sign)
95.
Which side of a chemical equation is the reactant side?
a)
Left (before the yields sign)
b)
Right (after the yields sign)
96.
The Law of Conservation of Matter states that the total mass of the reactants should be 
a)
More than the mass of the products
b)
Equal to the mass of the products
c)
Ignored during the reaction
d)
Less than the mass of the products
97.
What are Chemical Reactions?
a)
It's when you mix substances.
b)
a process in which atoms rearrange to form new substances
c)
When something bubbles.
d)
letter and numbers showing the types and number of atoms
98.
the starting materials in a chemical reaction
a)
Products
b)
Reactants
c)
Starters
d)
Enders
99.
a substance that is formed as the result of a chemical reaction
a)
Product 
b)
Reactant
c)
Starters
d)
Enders
100.
AB + CD →AD + CB
a)
Double Replacement
b)
Single Replacement
c)
Synthesis
d)
Decomposition
101.

What mathematical function do coefficients perform in a balanced equation?

a)

addition

b)

multiplication

c)

subtraction

d)

division

102.

Which of the following is an example of a synthesis reaction?

a)
b)
c)
d)
103.

Which of the following is an example of a decomposition reaction?

a)
b)
c)
d)
104.

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

a)
b)
c)
d)
105.

Which of the following is an example of a double replacement reaction?

a)
b)
c)
d)
106.

The red numbers in the image represent

a)

subscripts

b)

coeffiecients

c)

roman numerals

d)

none of the answer options are correct

107.

The blue numbers in the image represent

a)

subscripts

b)

coeffiecients

c)

roman numerals

d)

none of the answer options are correct

108.
Which problem is balanced?
(Check ALL answers)
a)
PbO2 + 2H2
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
109.
Is this balanced?
Al + O2 → 2Al2O3
a)
Yes
b)
No
110.

Balance this reaction:

____ Na3PO4 + ____ KOH ---> ____ NaOH + ____ K3PO4

a)

1,3,3,1

b)

1,3,2,1

c)

2,3,3,1

d)

1,1,3,1

111.

Which type of reaction is:

2 H3AsO4 → As2O5 + 3 H2O

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Combustion
112.
Which type of reaction is: C2H4 + 3 O2 → 2 CO2 + 2 H2O
a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Combustion
113.

Which type of reaction is:

2 NaBr + Ca(OH)2 → CaBr2 + 2 NaOH

a)
Synthesis
b)
Single Displacement
c)
Double Displacement
d)
Combustion
114.

Balance the following:

____ H2SO4 + ____ NaNO2 → ____ HNO2 + ____ Na2SO4

a)
1,1,2,1
b)
1,2,2,1
c)
2,3,3,2
d)
4,3,2,1
115.

In the equation, 2Mg + O2 ---> 2MgO, which are the reactants?

a)

Mg and O2

b)

MgO

c)

Mg and MgO

d)

O and MgO

116.

Balance this equation:

​ (a)   Fe + ​ (b)   O2 --> ​ (c)   Fe2O3

Choose from the below words
4
3
2
1
0
117.

What are the coefficients that would properly balance this equation?

__C3H8 + __O2 --> __CO2 + __H2O

a)

2, 7 --> 6, 8

b)

1, 5 --> 3, 4

c)

2, 5 --> 4, 6

d)

1, 4 --> 2, 3

118.

Identify the type of reaction:

2Na + Cl2 --> 2NaCl

a)

Single Replacement

b)

Double replacement

c)

Synthesis

d)

Decomposition

119.

Determine the coefficients to balance the equation.

__Fe + __O2 --> __Fe2O3

a)

1, 1 --> 1

b)

2, 1 --> 1

c)

4, 3 --> 2

d)

3, 2 --> 1

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