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Compounds

Total questions: 76

Worksheet time: 49mins

Name
Class
Date
1.

When chemical bonds form, energy is absorbed

a)

True

b)

False

c)

I Don't Know

2.

The electrons that are involved in the chemical bonding are called oxidation electrons.

a)

True

b)

False

c)

I Don't Know

3.

The type of chemical bond formed by the sharing of electrons is the ionic bond.

a)

True

b)

False

c)

I Don't Know

4.
a)
Element
b)
Compound
c)
Mixture
5.

How many types of atoms are in K₂SO₄

a)

7

b)

3

c)

2

d)

4

6.
What two types of atoms make a covalent bond?
a)
2 Nonmetals
b)
1 Nonmetal and 1 Metal
c)
2 Metals
d)
2 Noble Gases
7.

How many total atoms are in K₂SO₄

a)

7

b)

2

c)

4

d)

3

8.

The most stable number of valence electrons an element in the third period may possess is 18 electrons.

a)

True

b)

False

c)

I Don't Know

9.

Covalent bonds are more likely to form between two atoms when the separation between them on the periodic table is small.

a)

True

b)

False

c)

I Don't Know

10.
What is the name for an ion with a negative charge?
a)
cation
b)
anion
c)
onion
d)
union
11.
Predict the bond that will form between Be and F.
a)
Ionic
b)
Covalent
12.

Which of the following describes covalent bonds?

a)

Bonds form because of opposite charges

b)

electrons are shared to fill outer electron shells

c)

Electrons are transferred between atoms

d)

Covalent bonds are magical

13.

A negative ion is called a(n) __________ .

a)

onion

b)

anion

c)

cation

d)

dogion

14.

Oils are carbohydrates that are liquid at room temperature.

a)

True

b)

False

c)

I Don't Know

15.

On each rung of a DNA ladder, the base thymine only pairs with the base pair adenine.

a)

True

b)

False

c)

I Don't Know

16.

What is true about valence electrons? Check all that apply.

a)

ALL elements want 8 valence electrons.

b)

All elements, except Hydrogen and Helium, want 8 valence electrons.

c)

Valence electrons are the electrons closest to the nucleus.

d)

Valence electrons are involved in chemical bonding.

e)

Valence electrons are in the outermost energy level of an atom.

17.

What is true about Be2+?

a)

The atom gained 2 electrons.

b)

The atom lost 2 electrons.

c)

The atom will bond covalently.

d)

Beryllium is a nonmetal.

18.

What type of elements form cations?

a)

metals

b)

nonmetals

c)

metalloids?

19.

The branch of chemistry that specializes in carbon and carbon compounds is called ecological chemistry

a)

True

b)

Falsse

c)

I Don't Know

20.

Animal parts such as hair, fingernails, and skin contain proteins.

a)

True

b)

False

c)

I Don't Know

21.

Which statement best explains why atoms form chemical bonds with other atoms?

a)

Most atoms are less stable when they combine with other atoms.

b)

When atoms collide with other atoms, they bond automatically.

c)

Atoms are always attracted to other atoms.

d)

Most atoms are unstable unless they are combined with other atoms.

22.

A (a)   is represented by two lines in a structural formula

23.

Is the formula S4N4 an ionic or covalent compound?

a)

ionic

b)

covalent

24.

Select the correct formula for the

COVALENT COMPOUND

carbon tetrachloride

a)

CCl

b)

CCl2

c)

C4Cl2

d)

CCl4

25.
What two types of atoms make a covalent bond?
a)
2 Nonmetals
b)
1 Nonmetal & 1 Metal
c)
2 Metals
d)
2 Noble Gases
26.

Which of the following is TRUE? Covalent bonding occurs:

a)

in salts like NaCl.

b)

when electrons are shared between two atoms.

c)

only when electrons are shared between two identical atoms.

d)

when electrons are transferred from one atom to another.

27.

When an atom gains or loses electrons, it has an electrical charge. It is known as:

a)

an ion.

b)

a free radical.

c)

a hydrate.

d)

a monoatomic molecule.

28.

Transferring or sharing electrons between atoms forms:

a)

mixtures

b)

bonds

c)

alloys

d)

solutions

29.
The formula of this atom when it becomes an ion would be
a)
N-2
b)
N+3
c)
N-3
d)
N+2
30.

We use subscripts to make the net charge of a compound equal _______.

a)

0

b)

2

c)

8

d)

16

31.

Polyatomic means _________

a)

1 element

b)

1 atom

c)

more than 1 element

d)

more than 1 atom

32.

Groups of atoms held together by covalent bonds are called:

a)

molecules

b)

elements

c)

mixtures

d)

alloys

33.

The correct formula for the compound potassium phosphide is (a)  

(don't worry about doing subscripts, just write the correct chemical symbols and numbers!)

34.

Sodium is found in group 1. What ion will it form?

a)

S+

b)

S-

c)

Na+

d)

Na-

35.

Why is it so important to specify the charge of a transition metal?

a)

Because you have to for any metal

b)

Because transition metals can make ions of different charges

c)

Because transition metals start with one charge and end with another, so you have to write both charges

d)

None of these are correct.

36.

What is the oxidation number for P?

(a)  

37.

Select the correct formula for the

IONIC COMPOUND

Magnesium Chloride

a)

MgCl2

b)

MgCl

c)

Mg2Cl

d)

Mg2Cl3

38.

Which of the following is an example of a covalent compound?

a)

Sodium Nitride

b)

Lithium Oxide

c)

Barium Sulfide

d)

Chlorine dioxide

39.

Name the compound: CF4

a)

carbon tetrafluoride

b)

monocarbon tetrafluoride

c)

carbon fluoride

d)

chlorine tetrafluoride

40.

What are the seven diatomic elements?

a)

H2, Cl2, Br2, O2, N2, I2, F2

b)

H2, Cl2, I2, F2, Hg2, Br2, Fe2

c)

H2, Cu2, Ni2, B2, O2, I2, Fe2

41.

Sodium forms an ionic bond with chlorine when sodium ____ an electron and chlorine ____ an electron.

a)

shares, shares

b)

loses, gains

c)

gains, loses

d)

loses, loses

42.

This molecule provides the primary energy for the cells.

a)

carbohydrates

b)

lipids

c)

proteins

d)

nucleic acids

43.
Amino acids all have the same general structure except for the:
a)
Amino Group
b)
Carboxyl Group
c)
'R' Group
d)
Carbonyl Group
44.

The carbohydrate, ____, is used by plants to give their structure strength.

a)

Glucose

b)

Sucrose

c)

Cellulose

d)

starch

45.

What is the function of lipids in plants and animals?

a)

A quick source of energy.

b)

Storage of energy in reserve for long periods.

c)

Breaking down of proteins into amino acids.

d)

Building proteins.

46.

Digestion breaks down proteins into:

a)

proteins

b)

fats

c)

Nucleotides

d)

Amino Acids

47.

Which of these foods contains the most lipids?

a)

chicken

b)

butter

c)

celery

d)

Dr. Pepper

48.

What is the polymer of Carbohydrates?

a)

Triglycerides

b)

Fats

c)

Polysaccharides

d)

Monosaccharides

49.

What is the symbol for Hydrogen?

a)

H2O

b)

H

c)

Hy

d)

Hydro

50.

What is the subunit/monomer of a protein?

a)

Monosaccharides

b)

Nucleotides

c)

Fatty Acids

d)

Amino Acids

51.

What purpose do nucleic acids serve in the body?

a)

Structural support

b)

energy production

c)

energy storage

d)

information storage and transfer

52.

Polyatomic means _________

a)

1 element

b)

1 atom

c)

more than 1 element

d)

more than 1 atom

53.

What is the correct formula for barium sulfide?

Barium = Ba

Sulfur = S

a)

BaS

b)

BaS2

c)

Ba2S

d)

Ba2S3

54.
The formula of this atom when it becomes an ion would be
a)
N-2
b)
N+3
c)
N-3
d)
N+2
55.

What does the number 3 represent in 4 NH3?

a)

Subscript

b)

Superscript

c)

Coefficient

56.

Describes molecular compounds. Pick all that apply.

a)

no prefixes when naming

b)

uses prefixes when naming

c)

shares valence electrons

d)

transfers valence electrons

57.
How do the following two elements bond together?
Na1+  F1-         
a)
NaF
b)
NaF3
c)
Na3F
d)
Na1F2
58.
Ionic compounds are bonds between
a)
Metals and Metals
b)
Metals and Nonmetals
c)
Nonmetals and Nonmetals
d)
None of the above
59.
Name the ionic compound SnSe2
a)
Tin diselenide
b)
Tin (IV) Selenide
c)
Tin selenide
d)
Tin (II) triselenide
60.
Na2S
a)

Disodium sulfide

Disodium sulfide

b)
Sodium sulfide
c)
Sodium monosulfide
61.

Al2S3

a)

dialuminum trisulfide

b)

aluminum sulfide

c)

aluminum (III) sulfide

d)

aluminum 2 sulfur 3

62.

Tri is prefix for __________

a)

1

b)

2

c)

3

d)

4

e)

5

63.

S2Cl5 is named

a)

sulfur chlroride

b)

disulfur tetrachloride

c)

disulfur pentachloride

d)

pentasulfur dichloride

64.
MgS 
a)
Magnesium sulfide
b)
Monomagnesium monosulfide
c)
Magnesium monosulfide
65.

______________ formula give the type of atoms, number of atoms, and bonding used.

a)

Structural formula

b)

Molecular formula

c)

Both of these

d)

Neither of these

66.

OH–

a)

hydrogen carbonate

b)

oxonium

c)

hydroxide

d)

acetate

67.

Chemical Formula for Nitrate

a)

MnO4-1

b)

NO3-1

c)

CLO4-1

d)

BrO3-1

68.

What is the correct chemical formula for magnesium chloride?

a)

MgCl

b)

Mg2Cl

c)

MgCl2

d)

MgCl3

e)

Mg3Cl

69.
Which of the following is NOT an ionic compound:
a)
CaO
b)
NaOH
c)
BaCl2
d)
Br2
70.

Which of the following is composed of more than 2 atoms?

a)

Calcium chloride

b)

sodium chloride

c)

potassium chloride

d)

magnesium flouride

71.

What is the correct name for the compound CoCl2?

a)

cobalt(I) chlorate

b)

cobalt(I) chloride

c)

cobalt(II) chlorate

d)

cobalt(II) chloride

72.

Describes molecular compounds. Pick all that apply.

a)

no prefixes when naming

b)

uses prefixes when naming

c)

shares valence electrons

d)

transfers valence electrons

73.
The chemical formula for an ionic compound of potassium and oxygen is
a)
KO.
b)
K2O.
c)
K2O2.
d)
KO2.
74.

Which type of covalent bond can be formed with Hydrogen?

a)

single

b)

double

c)

triple

75.
How do the following two elements bond together?
Na1+  F1-         
a)
NaF
b)
NaF3
c)
Na3F
d)
Na1F2
76.
What is the name of N2O3
a)
Nitrogen trioxide
b)
Dinitrogen oxide
c)
Dinitrogen trioxide
d)
Nitrogen oxide

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