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Chemical Bonds - summative

Total questions: 65

Worksheet time: 33mins

Name
Class
Date
1.

Identify whether the following element is a METAL or NONMETAL:
HYDROGEN

a)

METAL

b)

NONMETAL

2.

Identify whether the following element is a METAL or NONMETAL:
OXYGEN

a)

METAL

b)

NONMETAL

3.

Identify whether the following element is a METAL or NONMETAL:
IRON

a)

METAL

b)

NONMETAL

4.

Identify whether the following element is a METAL or NONMETAL:
SODIUM

a)

METAL

b)

NONMETAL

5.

Identify whether the following element is a METAL or NONMETAL:
CHLORINE

a)

METAL

b)

NONMETAL

6.

Identify whether the following element is a METAL or NONMETAL:
CARBON

a)

METAL

b)

NONMETAL

7.

Identify whether the following element is a METAL or NONMETAL:
ALUMINUM

a)

METAL

b)

NONMETAL

8.

Identify whether the following element is a METAL or NONMETAL:
NITROGEN

a)

METAL

b)

NONMETAL

9.

Identify whether the following element is a METAL or NONMETAL:
SULFUR

a)

METAL

b)

NONMETAL

10.

Identify whether the following element is a METAL or NONMETAL:
PHOSPHOROUS

a)

METAL

b)

NONMETAL

11.

A unique group of elements that share properties of both metals and nonmetals.

a)

Metals

b)

Metalloids

c)

Nonmetals

d)

Inert gases

12.

What type of bond is formed when electrons are shared between atoms?

a)

Ionic bond

b)

Covalent bond

c)

Metallic bond

d)

Hydrogen bond

13.

Which of the following elements is most likely to form an ionic bond with chlorine (Cl)?

a)

Oxygen (O)

b)

Sodium (Na)

c)

Carbon (C)

d)

Nitrogen (N)

14.

In an ionic bond, electrons are:

a)

Shared equally

b)

Lost and gained

c)

Shared unequally

d)

Not involved

15.

What type of bond holds two hydrogen atoms together in an H₂ molecule?

a)

Ionic

b)

Polar covalent

c)

Nonpolar covalent

d)

Metallic

16.

What is the name for a bond formed by the attraction between positively charged metal ions and the electrons around them?

a)

Covalent bond

b)

Metallic bond

c)

Ionic bond

d)

Hydrogen bond

17.

Which compound contains both ionic and covalent bonds?

a)

CO₂

b)

H₂O

c)

NaNO₃

d)

CH₄

18.

Which of the following elements can form a diatomic molecule held together by a covalent bond?

a)

Na

b)

He

c)

O

d)

Ne

19.

A molecule of ammonia (NH₃) contains what kind of bonds?

a)

Ionic

b)

Polar covalent

c)

Nonpolar covalent

d)

Metallic

20.

What causes a polar covalent bond?

a)

Equal sharing of electrons

b)

Transfer of electrons

c)

Unequal sharing of electrons

d)

Loss of electrons

21.

What type of bond exists in a salt crystal (e.g., NaCl)?

a)

Covalent

b)

Ionic

c)

Metallic

d)

Hydrogen

22.

What does a single covalent bond consist of?

a)

One shared electron

b)

Two shared electrons

c)

One transferred electron

d)

Two transferred electrons

23.

In a metallic bond, what is the "sea of electrons"?

a)

Electrons shared in pairs

b)

Electrons transferred to nonmetals

c)

Delocalized electrons free to move

d)

Electrons fixed in place

24.

What kind of bond is found in water (H₂O)?

a)

Ionic

b)

Nonpolar covalent

c)

Polar covalent

d)

Metallic

25.

Which type of bonding is typically found in compounds formed between metals and nonmetals?

a)

Covalent

b)

Metallic

c)

Ionic

d)

Hydrogen

26.

Which type of bond is completed through the transfer of electron from one atom to another atom?

a)

Ionic bond

b)

Covalent bond

c)

Metallic bond

d)

Hydrogen bond

27.

What is formed after an atoms gives or receives electrons?

a)

Metals

b)

Transition elements

c)

Nonmetals

d)

Ion

28.

It refers to the electron found at the outermost shell of an atom.

a)

Valence electron

b)

Shared electron

c)

Ground state

d)

Lewis structure

29.

Valence electrons are equal to the ________.

a)

Period number

b)

Atomic number

c)

Group number

d)

Mass number

30.

What is an ion?

a)

A neutral atom

b)

An atom with extra neutrons

c)

An atom or molecule with a charge

d)

A radioactive atom

31.

What is a cation?

a)

A negatively charged ion

b)

A positively charged ion

c)

A neutral molecule

d)

An isotope

32.

What is an anion?

a)

A positively charged ion

b)

A neutral atom

c)

A negatively charged ion

d)

An ion with no electrons

33.

Which of the following elements is most likely to form a cation?

a)

Oxygen

b)

Fluorine

c)

Sodium

d)

Chlorine

34.

How is a negative ion formed?

a)

By losing protons

b)

By gaining electrons

c)

By gaining protons

d)

By losing neutrons

35.

How is a positive ion formed?

a)

By gaining electrons

b)

By losing electrons

c)

By gaining protons

d)

By losing neutrons

36.

Which of the following is a correct representation of a calcium ion?

a)

Ca⁻

b)

Ca²⁻

c)

Ca²⁺

d)

Ca⁺

37.

What is the charge of an aluminum ion?

a)

1+

b)

2+

c)

3+

d)

1-

38.

Which of the following ions has a 1− charge?

a)

Na⁺

b)

Cl⁻

c)

Ca²⁺

d)

Al³⁺

39.

What is the ion formed when oxygen gains two electrons?

a)

O²⁻

b)

O⁻

c)

O²⁺

d)

O⁰

40.

Which group on the periodic table tends to form 1+ ions?

a)

Group 1 (alkali metals)

b)

Group 2 (alkaline earth metals)

c)

Group 16

d)

Group 17

41.

What happens to the size of an atom when it becomes a cation?

a)

It increases

b)

It decreases

c)

It stays the same

d)

It becomes a gas

42.

What happens to the size of an atom when it becomes an anion?

a)

It increases

b)

It decreases

c)

It stays the same

d)

It disappears

43.

Which of the following is a polyatomic ion?

a)

Cl⁻

b)

O²⁻

c)

Na⁺

d)

SO₄²⁻

44.

Which of the following is an example of an ionic compound?

a)

CO₂

b)

H₂O

c)

NaCl

d)

CH₄

45.

Which of the following is CORRECTLY paired?

a)

cations: give neutrons
anions: receive neutrons

b)

cations: donate protons
anions: receive protons

c)

cations: receive electrons
anions: give electrons

d)

cations: give electrons
anions: receive electrons

46.

It is also called "molecular bond", a chemical bond that involves sharing of electron pairs between atoms.

a)

Ionic bond

b)

Covalent bond

c)

Hydrogen bond

d)

Metallic bond

47.

A type of covalent bond that involves equal sharing of electrons.

a)
Ionic bond
b)
Polar covalent bond
c)
Metallic bond
d)
Nonpolar covalent bond
48.

A type of covalent bond where electrons are shared unequally.

a)
Nonpolar covalent bond
b)
Ionic bond
c)
Polar covalent bond
d)
Metallic bond
49.

Classify the following properties into IONIC or COVALENT bond:
Exists in the solid state only.

a)

IONIC

b)

COVALENT

50.

Classify the following properties into IONIC or COVALENT bond:
Very low conductivity.

a)

IONIC

b)

COVALENT

51.

Classify the following properties into IONIC or COVALENT bond:
Brittle.

a)

IONIC

b)

COVALENT

52.

Classify the following properties into IONIC or COVALENT bond:
High melting point.

a)

IONIC

b)

COVALENT

53.

How are ions formed?

a)
Ions are created through the addition of protons.
b)
Ions are formed by the fusion of atoms.
c)
Ions are formed by the splitting of molecules.
d)
Ions are formed by the loss or gain of electrons by atoms.
54.

(a)   tend to lose electrons and form positively-charged ions called cations.

55.

(a)   tend to gain electrons and form negatively-charged ions called anions.

56.

The attractive force that holds together the atom, ions, or molecules of chemical compounds.

a)
Molecular structure
b)
Ionic charge
c)
Chemical reaction
d)
Chemical bond
57.

Why do atoms form bonds?

a)
Atoms bond to repel each other.
b)
Atoms bond to create energy sources.
c)
Atoms bond to increase their mass.
d)
Atoms form bonds to achieve stability by filling their outer electron shells.
58.

Why are nobles gases considered unreactive?

a)
Noble gases readily form compounds with metals and nonmetals.
b)
Noble gases have incomplete valence shells that attract other elements.
c)
Noble gases are highly reactive due to their low atomic mass.
d)
Noble gases are considered unreactive because they have a full valence shell of electrons.
59.

What is a valence electron?

a)
Valence electrons are the electrons in the outermost shell of an atom that participate in chemical bonding.
b)
Electrons that are only involved in nuclear reactions.
c)
Electrons that are responsible for the mass of an atom.
d)
Electrons that are always found in the nucleus of an atom.
60.

What is electronegativity?

a)
Electronegativity refers to the temperature at which a substance melts.
b)
Electronegativity is the speed at which electrons move in an atom.
c)
Electronegativity is the ability of an atom to attract electrons in a chemical bond.
d)
Electronegativity is the measure of an atom's size.
61.

What is ionization energy?

a)
Ionization energy is the energy released when an electron is added to an atom.
b)
Ionization energy is the energy needed to remove an electron from an atom.
c)
Ionization energy is the temperature at which an atom becomes ionized.
d)
Ionization energy is the energy required to split an atom into its nucleus and electrons.
62.

Which of the following compounds is an example of an ionic bond?

a)
Carbon dioxide (CO2)
b)
Water (H2O)
c)
Methane (CH4)
d)
Sodium chloride (NaCl)
63.

Which of the following compounds is an example of a covalent bond?

a)
Water (H2O)
b)

Magnesium Chloride (MgCl2)

c)
Sodium chloride (NaCl)
d)
Iron oxide (Fe2O3)
64.

Which of the following shows a metallic bond?

a)
Covalent bonds in water
b)
Hydrogen bonds in ammonia
c)
Metals like copper and aluminum show metallic bonds.
d)
Ionic bonds in sodium chloride
65.

How do ionic bonds conduct electricity?

a)
Ionic bonds conduct electricity in solid form due to fixed electrons.
b)
Ionic bonds conduct electricity when dissolved in water or melted due to the mobility of ions.
c)
Ionic bonds do not conduct electricity under any circumstances.
d)
Ionic bonds only conduct electricity when exposed to high temperatures.

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