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Compounds

Total questions: 82

Worksheet time: 1hrs 3mins

Name
Class
Date
1.
How are covalent bonds formed?
a)
Sharing of electrons
b)
Transfer of electrons
2.

Covalent Bonds ______________ valence electrons.

a)

give

b)

take

c)

keep

d)

share

3.
Why do elements bond?
a)
To be friends
b)
To create a new element
c)
To become stable
4.
Same repel, opposites
a)
avoid
b)
attract
c)
push
d)
pull
5.
What is a valence electron?
a)
The sum of neutrons and protons.
b)

The number of electrons in the last shell.

c)
A type of bond.
d)
A popular compound.
6.
Group numbers on the periodic table help us determine 
a)
The number of valence electrons
b)
Color of the elements
7.
Where are metals located on the periodic table?
a)
Blue
b)
Green
c)
Red
8.
Where are the nonmetals located on the periodic table? 
a)
Blue
b)
Red
c)
Green
9.
Where are the metalloids located on the periodic table?
a)
Blue
b)
Red
c)
Green
10.
Two or more atoms held together by a chemical bond is called what?
a)
A molecule
b)
A molecure
11.
Which of these is not a real bond in chemistry?
a)
James
b)
Ionic
c)
Covalent
12.

All but Hydrogen and Helium want how many valence electrons?

a)

1

b)

2

c)

8

d)

0

13.

Why do atoms bond?

a)

to find a date

b)

to become bigger

c)

to go to dog jam

d)

to become stable

14.

When atoms bond it is called a ___________________ because they make a new substance.

a)

chemical reaction

b)

physical reaction

15.
Why do atoms share electrons?
a)
To attain the electron configuration of a noble gas.
b)
To become ions and take a charge
c)
to increase the mass
d)
it's a nice thing to do.
16.
How many elements follow the periodic law?
a)
7
b)
98
c)
110
d)
All of them
17.
A rule that states that repeating chemical and physical properties of elements change periodically with the atomic number of the elements is the _________.
a)
periodic law
b)
alkaline-earth metals
c)
actinide
d)
group rule
18.
The horizontal row on the periodic table is called a
a)
group
b)
family
c)
period
d)
atomic number
19.
A vertical column is called...
a)
group
b)
tower
c)
period
d)
crew
20.
Which of the following is the most metallic element in period 3?
a)
Boron (B)
b)
Sodium (Na)
c)
Argon (Ar)
d)
Silicon (Si)
21.
Which of these element is the least metallic?
a)
Potassium (K)
b)
Carbon (C)
c)
Sulfur (S)
d)
Neon (Ne)
22.
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
23.
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
24.
What is the chemical symbol for Lithium?
a)
H
b)
He
c)
Li
d)
N
25.
Pure forms of these elements are stored in oil so they won't react with oxygen and water in the air.
a)
Alkali Metals
b)
Alkaline-earth metals
c)
Halogens
d)
Noble Gases
26.
Diamonds are a pure form of what element?
a)
Carbon
b)
Oxygen
c)
Silicon
d)
Silver
27.
What group of elements don't have individual names?
a)
Alkaline-earth Metals
b)
Transition Metals
c)
Alkali Metals
d)
Halogens
28.
What element is used in light bulbs to help them last longer?
a)
Xenon
b)
Argon
c)
Helium
d)
Krypton
29.
Most of the elements on the periodic table are classified as _____.
a)
Metals
b)
Nonmetals
c)
Metalloids
d)
Periods
30.
Why do some elements have 3 letter chemical symbols?
a)
There are no elements with 3 letter symbols
b)
They are named after scientists
c)
They are named after places
d)
They have a temporary name until scientists agree on a new name.
31.
How did Mendeleev arrange the elements?
a)
alphabetical 
b)
density
c)
melting point
d)
atomic mass
32.

Elements that have the same number of energy levels are said to be in the same ______.

a)

group

b)

period

c)

family

d)

classification

33.

Which halogen is found in period 4?

a)

Krypton (Kr)

b)

Xenon (Xe)

c)

Bromine (Br)

d)

Iodine (I)

34.

Which element has similar chemical properties as sodium but has 7 energy levels?

a)

Francium (Fr)

b)

Cesium (Cs)

c)

Rubidium (Rb)

d)

Potassium (K)

35.

Which element is found in group 2, period 6?

a)

Oxygen (O)

b)

Barium (Ba)

c)

Selenium (Se)

d)

Carbon (C)

36.

Metals (select all that apply)

a)

are found on the right side of the periodic table.

b)

are found on the left side of the periodic table.

c)

are good conductors of heat and electricity.

d)

are brittle.

e)

are malleable and ductile.

37.

A row on the Periodic Table of Elements

a)

family

b)

period

c)

row

d)

isotope

38.

Periodic law states that the elements are arranged according to their atomic ________ so that elements with similar chemical properties are in the same ________ and properties repeat periodically.

a)

numbers, rows

b)

masses, rows

c)

masses, column

d)

numbers, column

39.
Sodium (Na) is found in period 
a)
3
b)
2
c)
4
d)
1
40.
The atomic number tells you what?  READ THE ANSWERS CAREFULLY
a)
only the number of electrons
b)
 only the number of protons
c)
only the number of neutrons
d)
the number of both electrons and protons in an atom.
41.
What does the 6 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
42.

The horizontal (side to side) rows in the Periodic Table are called

a)

groups

b)

families

c)

periods

d)

atomic numbers

43.

period

a)

Elements that occur in vertical columns on the periodic table.

b)

A horizontal row of elements in the periodic table

c)

Found in group two of the periodic table; highly reactive

d)

A subatomic particle that has a negative charge

44.

2. Ionic Bonding involves:

a)

The transfer of protons

b)

The transfer of neutrons

c)

The transfer of electrons

d)

None Of the above

45.

3. What do atoms that form positive ions tend to do?

a)

Tend to lose electrons

b)

Tend to lose protons

c)

Tend to gain electrons

d)

Tend to gain protons

46.

4. What usually forms the positive ion?

a)

Metal

b)

Nonmetals

c)

None

47.

6. What usually forms the negative ion?

a)

Nonmetals

b)

Metal

c)

None

48.

7. Covalent compounds:

a)

Share electrons

b)

Transfer electrons

c)

Neither

49.

8. What happens when an atom loses an electron?

a)

Neutral (no charge)

b)

Positive Charge

c)

Negative Charge

50.

9. What happens when an atom gains an electron?

a)

Neutral (no charge)

b)

Positive Charge

c)

Negative Charge

51.

10. What charges attract?

a)

Opposite

b)

Same

52.

11. What charges repel?

a)

Same

b)

Opposite

53.

12. What elements generally make an ionic bond?

a)

metal and nonmetal

b)

2 or more nonmetals

c)

metal

d)

none of the above

54.

13. What elements generally make a covalent bond?

a)

metal and nonmetal

b)

2 or more nonmetals

c)

metal

d)

none of the above

55.

15. What is a valence electron?

a)

an electron that is found in the outermost shell of an atom.

b)

an electron found in the innermost shell of an atom.

c)

an electron found in the middle shell.

56.

16. What is the number of valence electrons for Calcium (Group 2)?

a)

1

b)

2

c)

3

d)

4

57.

17. What is the number of valence electrons for Carbon (Group 14)?

a)

1

b)

2

c)

3

d)

4

58.

18. What is the number of valence electrons for Neon and the other Noble Gases?

a)

5

b)

6

c)

7

d)

8

59.

19. If an atom transfers an electron to another atom, those atoms form which bond?

a)

Ionic Bond, which is stronger than a covalent bonds

b)

Covalent Bond, which is stronger than ionic bonds

60.
Elements which are shiny, conduct electricity and heat are called
a)
metal
b)
nonmetal
c)
metalloid
d)
nonexistent
61.
Atoms with similar properties are most likely located...
a)
in the same period.
b)
in the same group.
c)
in different periods.
d)
to the right and left of each other.
62.
Each element is unique based on its number of protons, also known as the...
a)
atomic mass
b)
valence number
c)
atomic symbol
d)
atomic number
63.
Group Name and Number for Neon
a)
Alkaline Earth Metals 2 or 2A
b)
Noble Gases 18 or 8A
c)
Halogens 17 or 7A
d)
Alkali Metals 1 or 1A
64.
Group Name and Number for Flourine
a)
Transition Metals 3-12
b)
Noble Gases 18 or 8A
c)
Halogens 17 or 7A
d)
Alkali Metals 1 or 1A
65.
A neutron has a charge of
a)
+2
b)
No charge
c)
-1
d)
+1
66.
Which elements have the most similar chemical properties?
a)
K and Na
b)
K and Ca
c)
K and Cl
d)
K and S
67.
Who first developed the Periodic Table?
a)
Mendeleev
b)
Mosely
c)
Mendella
d)
Murphy
68.
Which of the following elements is required in an organic compound?
a)
nitrogen
b)
oxygen
c)
carbon
d)
sodium
69.
Which of the following formulas is inorganic?
a)
CHO
b)
CH
c)
SiO
d)
CHCOOH
70.
Which compound below is Organic?
a)
C6H12O6
b)
H2O
c)
N2
d)
BaBr2
71.
Organic compounds ALWAYS contain what two elements?
a)
C and O
b)
O and H
c)
C and H
d)
H and Fe
72.
Which of the following is a pure substance?
a)
O2
b)
Al2CO5
c)
C6H12O6
d)
SiO2
73.
Can be found on the periodic table
a)
Element
b)
Compound
c)
MIxture
74.
The atomic number of an element tells the number of _____ in the nucleus of an atom of that element.
a)
protons
b)
neutrons
c)
electrons
d)
isotopes
75.

a grouping of elements based on similar properties, arranged by columns in the periodic table; also known as a group

a)

family

b)

period

c)

row

d)

isotope

76.
Covalent bonds are between...
a)
Metal and Non-metal
b)
Non-metal and Non-metal
c)
Metal and Metal
77.
Which of the following is NOT formed by a covalent bond?
a)
K2S
b)
H2O
c)
I2
d)
CO2
78.
Ionic bonds are between...
a)
Metal and Non-metal
b)
Non-metal and Non-metal
c)
Metal and Metal
79.
Atoms are most stable when their outer shell is complete.
a)
true
b)
false
80.
Ionic or covalent?
NaBr
a)
Ionic
b)
Covalent
81.
Ionic or covalent?
H2O
a)
Ionic
b)
Covalent
82.

What kind of element forms covalent bond?

a)

metals

b)

semi -metals

c)

non metals

d)

metal and non metal

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