Font size
WorksheetsChemical Bond
Total questions: 40
Worksheet time: 1hrs 1mins
Valence electron is ...
an electron that is found in the outermost shell of an atom
an electron found in the innermost shell of an atom
an electron found in the middle shell
an electon found in the nucleus
How many electrons are being shared between the two carbon atoms in the compound ethyne (C2H2)?
1
2
3
6
The three dots in the Lewis dot structure for Boron indicate that it
Can bond with three other atoms
Can only form triple covalent bonds
Has three valence electrons
scores a 3 on Pauling's electonegativity scale
Sharing valence electron between atoms
the attraction between positive metal ions and free floating electrons (sea of electrons)
How many bonds are formed looking at the model of the compound? And identify what type of bond is formed.
2 bonds; covalent
4 bonds; metallic
2 bonds; ionic
4 bonds; covalent
Why don't noble gases form bonds?
Noble gases do form bonds
They all have a full octet
They only bond with each other
Which is not true of the chemical bond shown on the diagram?
An electron from Na is transferred to Cl.
The bond is ionic since electron is shared by the two atoms.
A metal and a non-metal are involved in the bonding.
Na will become positively charged and Cl will be negatively charged.
Which two statements are correct about the figure shown?
It is a covalent bond.
Hydrogen atoms loss electrons and Carbon gains the atoms.
It happens on metal and on another non-metal.
The valence electrons are shared by both atoms.
Why does an atom tend to chemically bond with another atom?
To become more stable
To remain on its present state
To maintain its energy
To decrease its stability
Atom A has seven electrons in its outer shell. Atom B has one electron in its outer shell. They react and bond. Now both atoms have eight electrons in their outer shells. What kind of bond has formed?
Covalent
Ionic
Metallic
Electron
The bonds in Na2O are best described as
a covalent, because valence electrons are shared.
covalent, because valence electrons are transferred.
ionic, because valence electrons are shared.
ionic, because valence electrons are transferred.
Which statement about the bonding in carbon dioxide molecule is not correct? (Proton number: C = 6, O = 8)
Both carbon and oxygen atoms have achieved stable octet electron arrangement
Carbon atom shares its four electrons with one oxygen atom
Each oxygen atom shares two electrons with one carbon atom
Two double covalent bonds are formed
Which of the following are incorrect about the water molecule?
Each hydrogen atom donates one valence electron.
Oxygen atom share two electrons with two hydrogen atoms
One single covalent bond is formed in the molecule.
Hydrogen atoms and oxygen atom achieved a stable octet electron arrangement.
Which of the following statements is (are) true about metallic bond?
the bond is formed between an electropositive element and an electronegative atom
the strength of the bond increases with the atomic size of the metal
the valence electron can move freely throughout the metallic lattice
The illustration depicts the formation of an ionic chemical bond between lithium and fluorine atoms. Why is the resulting compound more stable than the individual atoms?
The shared electron from lithium to fluorine provides each atom with an empty electron shell.
The transferred electron from lithium to fluorine provides each atom with a full outer energy level/ electron shell.
The transfer of electrons from lithium to fluorine provides each atom with an empty electron shell.
Which of the following is the correct Lewis Dot Structure for the molecule fluorine (F2)?
A
B
C
D
Which is the correct molecular structure for carbon dioxide?
What is the correct Lewis Structure for ammonia (NH3)? (Atomic Number 7N, 1H)
A Nitrogen molecule (N2) has one triple bond. How many electrons do the each nitrogen atom share? (Atomic Number 7N)
1
3
4
6
The element oxygen has ________________ valence electrons and needs to add _________________ electrons to complete its octet.
2,6
6,2
4,4
How can coordinate covalent bond form between ammonia, NH3 and hydrogen ion, H+ to form ammonium ion, NH4+?
Ammonia, NH3 and hydrogen ion, H+ will each share one electron
The pair of electrons not involved in covalent bond in ammonia, NH3 will be shared with hydrogen ion, H+
Ammonia, NH3 and hydrogen ion, H+ will each share one electron
Which of these statements best describes a coordinate covalent bond?
A pair of electrons shared between two atoms where each atom has donated one electron.
A pair of electrons shared between two atoms where one atom has donated two electrons.
Two pairs of electrons shared between two atoms where each atom has donated one electron.
Two pairs of electrons shared between two atoms where each atom has donated two electrons.
Name the type of bond formed in ammonium ion [NH4]+.
Covalent bond
Coordinate Covalent bond
Hydrogen bond
Metallic bond
According to the Octet Rule, atoms of elements react with each other in order to attain ____ electrons in their outermost energy level or shell.
2
4
8
10
Which of the following compounds both have an ionic bond, are...
HF & HCl
NaBr & K2O
FeCl2 & H2O
C2H4 & CaC2
CO2 & N2O4
The following compound that has a double bond is...
Cl2
N2
H2
O2
An example of a compound with a triple covalent bond is...
H2
O2
N2
KCl
Coordinate covalent bonds are shown by....
K
R
Q
T
J
The pairs of elements that form covalent bonds are...
17X & 11Y
12P & 17Q
6R & 17Q
20M & 16T
19A & 35B
From Lewis dot structure of nitric acid (HNO3), the electron pair indicating a coordinating covalent bond is the electron pair number....
1
2
3
4
5
The elements P, Q, R, S and T are known with atomic numbers 19, 20, 13, 15 and 35 respectively. Elements that can form ionic bonds are….
R dan P
T dan S
P dan Q
Q dan T
Q dan R
The atomic mass number of atom X is 39 and the neutron is 20. While the proton number of atom Y is 17. If the two atoms are bonded, the molecular formula that can be form is….
XY
XY2
X2Y3
X3Y2
X2Y
Unaur-unsur atom dengan nomor atom sebagai berikut!
A = 6
B = 8
C = 11
D = 17
E = 19
Pasangan unsur-unsur di bawah ini yang dapat membentuk ikatan kovalen non polar adalah....
A dan C
B dan C
C dan D
A dan D
D dan E
Which of the following covalent compounds does not obey the octet rule?
CHCl3
NHO3
H2O
C2H4
BeCl2
Which of the following of covalent compounds are non-polar?
NH3, N2 and O2
H2O, HCl and HF
PCl3, PCl5 and ClO3
H2, Br2 and CH4
HBr, HCl and HI
Element P has a mass number of 24 and has the same number of protons and neutrons. Element Q has a mass number of 80 and the number of neutrons 45. If the two elements combine to form a compound, then the formula for the compound and the type of bond that occurs are...
P2Q , ionic
PQ2 , ionic
P2Q3 , covalent
P2Q , covalent
PQ2 , covalent
