Free Printable CHGO 15 - Midterm BSP 2-7

1.

Which one of the following is not a form of chemical bonding?

a)

covalent bonding

b)

metallic bonding

c)

H- bonding

d)

ionic bonding

2.

Which one of the following statements about positive ions is incorrect?

a)

They are also known as cations.

b)

They are formed when electrons are removed from atoms.

c)

They are larger than the atom which they are formed.

d)

They are smaller than the atom which they are formed.

3.

Which one of the following pairs atoms is most likely to form an ionic bond?

a)

Na and F

b)

C and F

c)

N and F

d)

O and F

4.

Which of the following statements contrasting covalent bonds and ionic bonds is correct?

a)

Covalent bonds usually involve two nonmetals and ionic bonds usually involve two metals.

b)

Covalent bonds usually involve two metals and ionic bonds usually involve a metal and a nonmetal.

c)

Covalent bonds usually involve a metal and a nonmetal and ionic bonds usually involve two nonmetals

d)

Covalent bonds usually involve two nonmetals and ionic bonds usually involve a metal and a nonmetal.

5.

The dots placed around the chemical symbol of the element are called ____________.

a)

valence electron

b)

valence number

c)

atomic number

d)

atomic mass

6.

Water (H₂O) is an example of covalent bond because_______________

a)

Hydrogen gains one electron while oxygen lose one electron

b)

They do not form neutral group of atoms

c)

Electrons shared by between hydrogen and oxygen

d)

Hydrogen and oxygen have the same charge

7.

When electrons are shared unequally, chemists characterize these types of bonds as _________.

a)

polar covalent bond

b)

nonpolar covalent bond

c)

H- bond

d)

ionic bond

8.

Atoms with greatly differing electronegativity values are expected to form

a)

polar covalent bond

b)

nonpolar covalent bond

c)

H- bond

d)

ionic bond

9.

An atom electron dots or LEDS is the representation of _______________.

a)

proton arrangement

b)

energy level distribution

c)

electrons in the outermost energy level

d)

an ionic linkage

10.

Which of the following represents the correct Lewis structure for Cl₁₇?

a)

8

b)

6

c)

7

d)

1

11.

The tendency for atoms to gain or lose or share electron(s) in order to acquire a set of valence electrons is called____.

a)

Octet Rule

b)

Hund’s rule

c)

Aufbau Priciple

d)

Pauli’s Exclusion Priciple

12.

The ions that pack as spheres in a very regular pattern form ___________

a)

amorphous substance

b)

crystalline substance

c)

no charged particles

d)

a charged particles

13.

Which among the following chemical bond were described by Kossel and Lewis?

a)

Metallic bond

b)

Polar covalent bond

c)

Coordinate bond

d)

Ionic and Covalent bond

14.

Which among the following formation is NOT an example of covalent bond?

a)

LiF

b)

CH₄

c)

H₂O

d)

HF

15.

If a bond is made up of a large number of organic compound, then the bond is termed as?

a)

Ionic bond

b)

Metallic bond

c)

Covalent bond

d)

Dipolar bond

16.

Which substances contain an ionic bond?

a)

H₂O

b)

CO₂

c)

MgF₂

d)

N₂

17.

How many electron dots will nitrogen have?

a)

five

b)

four

c)

three

d)

two

18.

What is the Lewis structure of Be₄?

a)

:Be:

b)

Be.

c)

Be :

d)

: Be .

19.

What is the bond in the diatomic molecule oxygen (O₂)?

a)

Double bond

b)

Single bond

c)

Triple bond

d)

None of the above

20.

Which of the following is true about the composition of ionic compounds?

a)

They are composed of anions and cations

b)

They are composed of anions only

c)

They are composed of cations only

d)

They are formed from two or more nonmetallic elements

21.

Atoms undergo bonding in order to ____________

a)

Lose stability

b)

Attain stability

c)

Move freely

d)

. Increase energy

22.

Which among the following is NOT both a molecule and a compound?

a)

C₆ H₁₂ O₆

b)

H₂O

c)

CO₂

d)

NaCl

23.

Which molecules contains nonpolar bond?

a)

NO

b)

F₂

c)

HCl

d)

KI

24.

When there is unequal sharing of electrons in a covalent compound a ______ exists.

a)

bond polarity

b)

double bond

c)

dipole

d)

electron clouds

25.

Which statement is TRUE about polar molecules?

a)

They are symmetrical

b)

They have similar charges on each end

c)

They are asymmetrical

d)

They dissolve with nonpolar compound

26.

What best describes- why water is polar?

a)

Water is a linear molecule

b)

Water is a bent molecule

c)

Water has no lone pairs on the center

d)

Water is a ionic molecule

27.

Which best describe a polar bond?

a)

Unequal pull between the shared electron/s

b)

Equal pull between the shared electron/s

c)

Unequal transfer of electron/s

d)

Equal transfer of electron/s

28.

A symmetric molecule, regardless of the polarity of the bonds, is always ___________ molecule.

a)

ionic

b)

covalent

c)

Nonpolar

d)

Polar

29.

Which compound is covalent?

a)

CH₄

b)

CsF

c)

BaO

d)

KCl

30.

Each of the following pairs of chemical species will combine. Which of the following combinations is best explained by coordinate covalent bond?

a)

H₂ + I₂

b)

Mg + O₂

c)

Cl + Cl

d)

H⁺ + H₂O

31.

When two species A and B form an electron-pair bond and A does not provide its electrons for bonding, the bond present between A and B must be

a)

ionic

b)

covalent

c)

dative

d)

hydrogen

32.

Which of the following is NOT a cation?

a)

iron(III) ion

b)

sulfate

c)

Ca⁺

d)

mercurous ion

33.

An -ate or -ite at the end of a compound name usually indicates that the compound contains ____.

a)

fewer electrons than protons

b)

neutral molecules

c)

only two elements

d)

a polyatomic anion

34.

Which element, when combined with fluorine, would most likely form an ionic compound?

a)

lithium

b)

carbon

c)

phosphorus

d)

chlorine

35.

Which of the following compounds contains the lead(II) ion?

a)

PbO

b)

PbCl₄

c)

Pb₂O

d)

Pb₂S

36.

What is the correct formula for potassium sulfite?

a)

KHSO₄

b)

KHSO₃

c)

K₂ SO₃

d)

K₂ SO₄

37.

In naming a binary molecular compound, the number of atoms of each element present in the molecule

is indicated by ____.

a)

Roman numerals

b)

superscripts

c)

prefixes

d)

suffixes

38.

Which of the following is the name of H₂SO₄ ?

a)

hyposulfuric acid

b)

hydrosulfuric acid

c)

sulfuric acid

d)

sulfurous acid

39.

What is the correct formula for barium chlorate?

a)

Ba(ClO)₂

b)

Ba(ClO₂ )₂

c)

Ba(ClO₃ )₂

d)

Ba(ClO₄)₂

40.

What is the correct formula for calcium dihydrogen phosphate?

a)

CaH₂ PO₄

b)

Ca₂ H₂ PO₄

c)

Ca(H₂ PO₄ )₂

d)

Ca(H₂ HPO₄ )₂

41.

What does an -ite or -ate ending in a polyatomic ion mean?

a)

Oxygen is in the formula

b)

Sulfur is in the formula.

c)

Nitrogen is in the formula.

d)

Bromine is in the formula

42.

What is the correct name for Sn₃ (PO₄ )₂ ?

a)

tritin diphosphate

b)

tin(II) phosphate

c)

tin(III) phosphate

d)

tin(IV) phosphate

43.

Which of the following is the correct name of P₂O₅?

a)

Phosphorous Oxide

b)

Diphosphorous Oxide

c)

Diphosphorous pentoxide

d)

. Phosphorous pentoxide

44.

Which of the following compounds would you expect to be ionic?

a)

SF₆

b)

H₂O

c)

NH₃

d)

CaO

45.

Anions tend to have a __________ charge and cations tend to have a __________ charge

a)

positive, positive

b)

negative, negative

c)

negative, positive

d)

positive, negative

46.

Anions tend to be __________ and cations tend to be __________.

a)

metals, metals

b)

nonmetals, nonmetals

c)

metals, nonmetals

d)

nonmetals, metals

47.

Which of the following defines chemical reactions?

a)

occur only in living organisms

b)

creates and destroys atoms

c)

only occur outside living organisms

d)

produces new substances

48.

What is the correct chemical formula of the compound potassium permanganate?

a)

KMnO₃

b)

KMnO₄

c)

K₂MnO₄

d)

MnO₄

49.

In the chemical equation, H₂O₂(aq) yields H₂O(l) + O₂(g), the H₂O₂ is a _____.

a)

product

b)

reactant

c)

catalyst

d)

solid

50.

In every balanced chemical equation, each side of the equation has the same number of _____.

a)

atoms

b)

molecules

c)

coefficient

d)

subscript

51.

Which of the following is the systematic name of chalk?

a)

Calcium oxide

b)

Calcium chloride

c)

Calcium nitrate

d)

Calcium carbonate

52.

What is the name of this compound HClO₄?

a)

hypochlorous acid

b)

perchloric acid

c)

hydrochloric acid

d)

chloric acid

53.

An element with an oxidation number of -2 belongs to what group of the periodic table?

a)

1

b)

2

c)

6

d)

7

54.

Which of the following represents the correct formula of a compound?

a)

KCl

b)

Ca(ClO₃)₃

c)

NaBr₂

d)

Cu₂O₃

55.

The chemical reaction between a metal and non-metal usually forms ionic compounds.

Which of the following is NOT an ionic compound?

a)

MagBr₂

b)

AlCl₃

c)

C₆H₁₂O₆

d)

NaCl

CHGO 15 - Midterm BSP 2-7

Total questions: 55

Worksheet time: 55mins

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