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Worksheets

2nd 9 weeks review

Total questions: 87

Worksheet time: 3hrs 52mins

Name
Class
Date
1.

When is an ionic bond formed?

a)

when electrons are shared

b)

when protons are shared

c)

when ions of opposite electrical charges attract each other

d)

when a positive hydrogen attracts a negative atom in another molecule

2.

A covalent bond forms

a)

when one or more electrons are transferred from one atom to another.

b)

when electrons are shared between atoms.

3.

Which two subatomic particles are found in the nucleus of an atom?

a)

Neutrons and Protons

b)

Shells and Electrons

c)

Electrons and Protons

d)

Electrons and Neutrons

4.

An atom becomes a positive ion when it

a)

gains electrons

b)

gains protons

c)

loses electrons

d)

loses electrons or gains protons

5.

Which subatomic part of an atom gives it a positive charge?

a)

Neutron

b)

Proton

c)

Electron

d)

Nucleus

6.

What is the smallest 'building block' of the elements that make up the universe?

a)

An atom

b)

An electron

c)

A proton

d)

A cell

7.

How many protons are in carbon?

a)

12

b)

6

c)

0

d)

7

8.

Which of the following atomic particles has NO CHARGE?

a)

proton

b)

electron

c)

neutron

d)

positron

9.

Usually the number of protons in an atom is equal to the number of what?

a)

protons

b)

neutrons

c)

electrons

d)

particles

10.
A horizontal row of elements in the periodic table.
a)
column
b)
group
c)
period
11.

How many energy levels (e- shells) does Calcium have in period 4?

a)

1

b)

2

c)

3

d)

4

12.
What charge is an electron? 
a)
Positive
b)
Negative
c)
Neutral
d)
Positive or Negative 
13.
What charge is an proton? 
a)
Positive
b)
Negative
c)
Neutral
d)
Positive or Negative 
14.
What charge is an neutron? 
a)
Positive
b)
Negative
c)
Neutral
d)
Positive or Negative 
15.

Neutral Atom

a)

the same amount of protons and electrons

b)

an atom with an overall charge (not neutral)

proton does not equal electrons 

c)

the mass of a specific atom

d)

variation of an element based on mass 

16.

How many protons does Potassium (K) have?

a)

19

b)

39

c)

20

d)

58

17.

What are rows on the periodic table called?

a)

Groups

b)

Families

c)

Periods

18.

What are regular columns on the periodic table called?

a)

Groups

b)

Families

c)

Periods

19.
Question Image

Match the following elements to their period.

a)

Oxygen (O)

1.

2

b)

Calcium (Ca)

2.

4

c)

Silver (Ag)

3.

5

d)

Francium (Fr)

4.

7

e)

Lead (Pb)

5.

6

20.

Match the family with its properties.

a)

Alkali Metals

1.

Group 1 (Minus H); Soft Metallic Solids; Low Melting Points & Densities

b)

Alkaline Earth Metals

2.

Group 2; Soft Metallic Solids; Low Melting Points & Densities

c)

Transition Metals

3.

Groups 3-12; Hard Metallic Solids; High Melting Points & Densities

d)

Halogens

4.

Group 17; Nonmetals; Super Reactive

e)

Noble Gases

5.

Group 18; Nonreactive Gases; Very Stable Atoms

21.
Why do bonds form?
a)
To fill the valence shell of electrons for the elements involved
b)
to release energy stored in the bonds
c)
because whenever you mix two chemicals, there will be a reaction
d)
because of attraction
22.
What type of bond occurs between a positive and a negative ion?
a)
Ionic bond
b)
covalent bond
c)
metallic bond
d)
p-n bond
23.
What type of bond is present when electrons are freely shared between metal atoms?
a)
Metallic
b)
Ionic
c)
Covalent
d)
Hippie
24.
What type of bond is illustrated above?
a)
Covalent
b)
Metallic
c)
Ionic
d)
Oxygen
25.

Water, H2O

a)

Ionic

b)

Covalent

c)

Metallic

26.

Magnesium Bromide is an ionic compound with the formula MgB2. What does the 2 tell you?

a)

Bromide has a 2- charge

b)

There are two magnesium ions for every one bromide ion.

c)

There are two bromide ions for every one magnesium ion

d)

Bromide has a 2+ charge

27.

When an atom loses an electron, it becomes a

a)

positive ion

b)

negative ion

c)

neutral ion

d)

neutral atom

28.

In the chemical formula for an ionic compound, which item is written first?

a)

the name of the positive ion

b)

the name of the negative ion

c)

the subscripts

d)

the charges

29.

Covalent bonding is between a

a)

nonmetal and nonmetal

b)

metal and nonmetal

c)

metal and metal

d)

It depends on the situation

30.

Valence electrons are

a)

neutral (no charge)

b)

found in the outer most energy level of the atom

c)

equal to the number of protons

31.
How many valence electrons in this structure?
a)
6
b)
5
c)
4
d)
7
32.

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

a)

20

b)

10

c)

35

d)

25

33.
An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?
a)
15
b)
31
c)
16
d)
47
34.

How many valence electrons does Aluminum Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

35.
Matter can not be created nor destroyed: it can only be
a)
Destroyed a little bit
b)
Invisible
c)
Transformed, changed
d)
None of the above
36.

A student pours 5.49 g hydrochloric acid (HCl) into an open beaker that contains a piece of magnesium (Mg). The Total mass of the product is 5.73 g. What was the mass of the magnesium?

a)

5.71 g

b)

11.22 g

c)

0.24 g

37.
The number in front of a compound or element is a 
a)
Subscript
b)
Coefficient
c)
Superscript
d)
Charge
38.

How many oxygen atoms are in this chemical formula?

a)

6 oxygen atoms

b)

2 oxygen atoms

c)

3 oxygen atoms

d)

4 oxygen atoms

39.
What is the arrow in a chemical equation...
H2 + O --> H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
40.
How many elements does PbNO3 have?
a)
2
b)
3
c)
4
d)
5
41.
Which equation best represents the law of conservation of mass? 
a)
A
b)
B
c)
C
d)
D
42.
Is this balanced?
2HgO → 2Hg + O2
a)
Yes
b)
No
43.

Which periodic table correctly shades the location of the metals?

a)

3

b)

2

c)

4

d)

1

44.

Students conducted an investigation on the properties of three elements. What type of element should sulfur be labeled?

a)

Nonmetal

b)

Metal

c)

Metalloid

d)

Undermetal

45.

In which direction do periods run on the periodic table of elements?

a)

horizontal

b)

vertical

c)

zigzag

d)

diagonal

46.

Which of the following is true for sodium (Na)?

a)

Its atomic number is 11, its atomic weight is 22.99, and it is in the same family as magnesium (Mg).

b)

Its atomic number is 22.99, its atomic weight is 11, and it is in the same family as lithium (Li).

c)

Its atomic number is 11, its atomic weight is 22.99, and it is in the same family as lithium (Li).

d)

Its atomic number is 22.99, its atomic weight is 11, and it is in the same family as magnesium (Mg).

47.

The atomic number of an element that has 4 protons and 5 neutrons is ___.

a)

4

b)

5

c)

9

d)

20

48.
Which two particles are in the atomic nucleus?
a)
protons and neutrons
b)
neutrinos and electrons
c)
neutrons and ions
d)
electrons and protons
49.
You unfold a paperclip without the metal breaking. This demonstrates which property for metals?
a)
Malleability
b)
Luster
c)
Melting point
d)
Density
50.

Which of the following is a compound?

a)

Methane (CH4)

b)

Silicon (Si)

c)

Blood

d)

Air

51.

The picture shows ____.

a)

a compound

b)

an element

c)

a mixture

d)

an organic

52.

What type of ion will Calcium (Ca) in Family 2 form?

a)

2+

b)

2-

c)

3+

d)

3-

53.
Which group of elements have the most stable, nonreactive elements (will not bond with others)?
a)
metalloids
b)
halogens
c)
alkali metals
d)
noble gases
54.
When two atoms share electrons (at least one from each atom), what is this occurrence called?
a)
hybridization
b)
ionic bonding
c)
covalent bonding
d)
ionization
55.

Which of the following is a covalent bond?

a)

H2O

b)

CaF2

c)

MgF2

d)

ScBr2

56.

What are group 15 elements most likely to do when combining with other substances?

a)

gain three electrons

b)

lose three electrons

c)

lose two electrons

d)

gain two electrons

57.
The left side of the equation below is called
a)
Products
b)
Reactants
58.
The right side of the equation below is called the
a)
products
b)
reactants
59.
The Modern Periodic Table of Elements is arranged by
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
60.
The atoms along the staircase are called 
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
61.
What is the mass number defined as?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
62.
Ionic bonds form between two ions that have...
a)
ionic compounds
b)
negative charges
c)
positive charges
d)
opposite charges
63.
A(n) _____________ is an atom or group of atoms that has an electric charge. 
a)
ion
b)
electron
64.

Calcium Oxide, CaO

a)

Covalent Bond

b)

Ionic Bond

65.
When an atom loses a valence electron, it becomes a(n) _________ion.
a)
positive 
b)
negative
66.

Calcium Chloride, CaCl2

a)

Covalent Bond

b)

Ionic Bond

67.

Why do ionic bonds form?

a)

so the number of protons equals the number of electrons

b)

to fill the outermost energy level to make the atom stable

c)

so an atom can become unstable

68.

A(n) _________ is an ion with a positive (+) charge.

a)

anion

b)

cation

c)

ion

d)

solute

69.

if NONMETALS are more likely to GAIN electrons, they will form ...

a)

anions

b)

neutral atoms

c)

cations

70.

How do covalent bonds form?

a)

Donating & receiving valence electrons between atoms

b)

Oppositely charged ions attract each other & form bonds

c)

Scientists are still not sure how they form

d)

Sharing valence electrons between atoms

71.

The formation of a covalent bond relies on the interaction or bonding of...

a)

2 Nonmetals

b)

1 Nonmetal & 1 Metal

c)

2 Metals

d)

2 Noble Gases

72.

What does this picture illustrate? (Select all that apply)

a)

Sharing valence electrons

b)

Covalent bonding

c)

transferring valence electrons

d)

ionic bonding

e)

two nonmetals

73.

What type of bond will this compound likely form H-Cl?

a)

Ionic compound

b)

Covalent compound

c)

Metallic compound

74.

What does the number 3 represent in 4NH3?

a)

Subscript

b)

Superscript

c)

Coefficient

75.

What does the number 4 represent in 4NH3?

a)

Subscript

b)

Superscript

c)

Coefficient

76.

In the equation shown, what are the reactant(s)?

a)

N2 + H2

b)

NH3

77.

How many Hydrogen (H) atoms are in 4NH3?

a)

4

b)

1

c)

3

d)

12

78.

Is this equation balanced?

a)

Yes

b)

No

79.

Is this equation balanced?

a)

Yes

b)

No

80.

Is this equation balanced?

a)

Yes

b)

No

81.

To balance an equation you should:

a)

ONLY change subscripts.

b)

ONLY change coefficients.

c)

Change BOTH subscripts and coefficients.

82.

How many atoms of hydrogen are in

C6H12O6

a)

6

b)

12

c)

18

d)

2

83.

How many oxygen (O) atoms are in 
Fe(NO3)2

a)
1
b)
2
c)
3
d)
6
84.
Matter can not be created nor destroyed: it can only be
a)
Destroyed a little bit
b)
Invisible
c)
Transformed, changed
d)
None of the above
85.
A chemical reaction is balanced when
a)
both sides have the same elements
b)
Both sides have the same  number of atoms
c)
Same subscripts
d)
Same coefficients
86.
If reaction starts with 20g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 10g of products
c)
a total of 80 g of products
d)
a total of 20g of products
87.
What is the Law of Conservation of mass?
a)
Mass is created in a chemical reaction
b)
Mass is created in a physical change
c)
New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
d)
Mass is never created or destroyed

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