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Chem101a

Total questions: 86

Worksheet time: 43mins

Name
Class
Date
1.
Poly means
a)
ONE
b)
TWO 
c)
THREE
d)
MANY
2.
MONO means:
a)
ONE 
b)
TWO
c)
THREE
d)
MANY
3.
Which of these is the smallest
a)
Atom
b)
Molecule
c)
Monomer
d)
Polymer
4.
Carbohydrates are used in living systems for:
a)
Quick energy
b)
Longterm energy storage
c)
Information 
d)
Hair, skin and nails
5.
Lipids serve this purpose:
a)
Quick energy
b)
Longterm energy storage
c)
Passing information from generation to generation
d)
Enzymes
6.
An Ion is:
a)
An atom that has gained or lost an electron
b)
An atom that has lost neutrons and therefore is somewhat radioactive
c)
A special protein that speeds up chemical reactions in living cells
d)
A chemical combination of atoms that has different chemical properties than its component atoms
7.
Carbon has a valence of 
a)
1
b)
2
c)
3
d)
4
8.
Carbon can bond with how many other atoms?
a)
1
b)
2
c)
3
d)
4
9.
Which are better for us to eat?
a)
Complex Carbs
b)
Simple sugars
10.
Another name for simple sugars
a)
monosaccharide
b)
polysaccharide
11.
Which fats are best for us to eat?
a)
Polyunsaturated oils
b)
Monounsaturated oils
c)
Saturated animal fats
d)
Trans fats
12.
A hydrometer measures a liquid's
a)
Carbohydrates
b)
Fats oils and waxes
c)
Density
d)
DNA
13.
Water can dissolve things, hold a great deal of heat, and attract other water molecules because it is:
a)
Ionic
b)
Covalent
c)
Valence of 4
d)
Polar
14.
This is the correct model of Carbon
a)
YES
b)
NO
15.
One water molecule attracts other water molecules because:
a)
It is polar 
b)
It is neutral 
c)
It has no charges
d)
It is only positively charged
16.
A protein is a made up of many
a)
Amino Acids
b)
Glucose
c)
Fatty Acid Chains
d)
Nucleotides
17.
Makes up our skin, hair, and nails.
a)
Carbohydrates
b)
Proteins
c)
Nucleic Acids
d)
Lipids
18.
Enzymes are:
a)
Lipids
b)
Carbohydrates
c)
Nucleic Acids
d)
Proteins
19.
These molecules speed up chemical reactions like the digestion of foods.
a)
Hormones
b)
Waxes
c)
Enzymes
d)
Carbs
20.
Nucleic acids like DNA do this job in our cells:
a)
Store Energy
b)
Build hair and nails
c)
Transfer information
d)
Support plant stems
21.

Which type of matter can not be broken down into simpler substances by a chemical change?

a)

an element

b)

a solution

c)

a mixture

d)

a compound

22.

A substance is classified as either an element or a

a)

compound

b)

solution

c)

heterogeneous mixture

d)

homogeneous mixture

23.

Matter is classified as a:

a)

substance only

b)

substance or as a mixture of substances

c)

homogeneous mixture only

d)

homogeneous or heterogeneous mixture

24.

Which type of matter is composed of two or more elements that are chemically combined in a fixed proportion?

a)

solution

b)

compound

c)

homogeneous mixture

d)

heterogeneous mixture

25.

Which of these terms refers to matter that could be heterogeneous?

a)

element

b)

mixture

c)

compound

d)

solution

26.

Which process is represented by this diagram?

a)

distillation

b)

titration

c)

chromatography

d)

electrolysis

27.

Which is not a process for separating parts of a mixture?

a)

filtration

b)

distillation

c)

electrolysis

d)

evaporation

28.

Which process could be used to separate sand and water?

a)

condensation

b)

magnetism

c)

sublimation

d)

filtration

29.

A student is filtering a mixture of sand and salt water into a beaker. What will be found in the beaker after the filtration is completed?

a)

sand only

b)

salt only

c)

sand and salt

d)

salt and water

30.

Which processes represent one chemical change and one physical change?

a)

freezing and melting

b)

freezing and vaporization

c)

decomposition (breaking down) and melting

d)

decomposition (breaking down) and combustion (burning)

31.

A 4.86 sample of calcium reacted completely with oxygen to form 6.80 grams of calcium oxide. This reaction is represented by the equation:


2Ca + O2 --> 2CaO.


Determine the total mass of oxygen that reacted.

a)

4.86

b)

2.06

c)

1.94

d)

6.80

32.

State the physical property that makes it possible to separate a solution by distillation.

a)

color

b)

boiling point

c)

freezing point

d)

density

33.

The reaction between aluminum and an aqueous solution of copper (II) sulfate is represented by the unbalanced equation below.


Al + CuSO4 --> Al2(SO4)3 + Cu


Determine the total mass of Cu produced when 1.08 grams of Al reacts completely with 9.58 grams of CuSO4 to produce 6.85 grams of Al2(SO4)3.

a)

6.85

b)

9.58

c)

3.81

d)

4.70

34.

Which process results in a chemical change?

a)

tearing tin foil

b)

melting an iron bar

c)

crushing an aluminum can

d)

burning magnesium ribbon

35.

What is an acid capable of donating or releasing in water?

a)

a proton, H+

b)

an electron, e-

c)

a neutron, n0

d)

oxygen ions

36.

What do all bases produce or release in water?

a)

OH- ions

b)

H+ ions

c)

cations

d)

anions

37.

Which acid is nitric acid?

a)

HNO3

b)

NH3

c)

HN-3

d)

HNO2

38.

What acid has the formula, H2SO4 ?

a)

sulfuric

b)

sulfurous

c)

hydrogen sulfide

d)

H2S

39.

Which of the following is named using the prefix hydro- and the suffic -ic?

a)

HBr

b)

HNO2

c)

H2CO3

d)

H3PO4

40.

How many H+ ions are there in the acid having the anion ClO1-?

a)

1

b)

2

c)

3

d)

4

41.

Which of the following is a base (or has hydroxide ions)?

a)

Mg(OH)2

b)

H2O

c)

HC2H3O2

d)

CH3Cl

42.

What is the name of the base, NaOH?

a)

sodium hydroxide

b)

monsodium hydroxide

c)

sodium (I) hydroxide

d)

sodium oxide

43.

All acids have _____ as the first symbol in their formulas.

a)

H

b)

Cl

c)

NO31-

d)

HO

44.

The formula for acetic acid is

a)

HC2H3O2

b)

HCO2

c)

H2O2

d)

HC3H7OH

45.
What sub atomic particle is different about Carbon-14 and Carbon-12?
a)
protons
b)
neutrons
c)
electrons
46.

The cell in which electrical energy is converted to chemical energy is:

a)

Galvanic cell

b)

Voltaic cell

c)

Electrolytic cell

d)

Electrochemical cell

47.

The compressibility factor for ideal gas

a)

Zero

b)

1

c)

>1

d)

<1

48.

biochemistry is the study of organic substances that are important for biological processes, which of these substances are not included in the group as a basic substance studied in biochemistry.

a. nucleic acid

b. lipid

c. ketone bodies

d. protein



(a)  

49.

a quick energy source for yourbody which is readily available in the blood is?

(a)  

50.

give the most common form of carbohydrates that is being used by your body for energy?



(a)  

51.

compltee the analogy - lock : key ; enzyme : (a)  

52.

what element will you add to C, H and O to produce the chemical formula of a protein?

(a)  

53.

what is a function of lipids?

a. used as the main energy source for plants.

b. stores hereditary information in bacteria.

c. used as insulation for marine arctic animals.

d. used as cell receptors, enzymes, and transport molecules in the human body.



(a)  

54.

what important molecule is used to encode your genetic code?

(a)  

55.

composed of nucleic acids, this structure is the basic of all our genetic information.



(a)  

56.

what is the protein found in human hair and finger nails, as well as in hooves, horns, wool, claws, bird beaks, and spider webs?



(a)  

57.

what is sugar replaces deoxyribose in dna when it is transcribed into rna?



(a)  

58.

Compared to the charge and mass of a proton, an electron has ______.

a)

the same charge and a smaller mass

b)

the same charge and the same mass

c)

an opposite charge and a smaller mass

d)

an opposite charge and the same mass

59.

An atom has a mass number of 37 and atomic number 17. How many protons does it have?

a)

20

b)

17

c)

54

d)

21

60.

The number of protons in a negatively charged atom (anion) is

a)

more than the atomic number of the element

b)

less than the atomic number of the element

c)

more than the number of electrons in the atom

d)

less than the number of electrons in the atom

61.

Which one among the following most correctly determines the atomic number of an element?

a)

Number of protons

b)

Number of protons and electrons

c)

Number of ions

d)

Number of nucleons

62.

What is the other name for group 18 elements?

a)

Noble gases

b)

Alkali metals

c)

Alkali earth metals

d)

Halogens

63.

Elements in the same vertical group of the periodic table have same

a)

Number of valence electrons

b)

Atomic number

c)

Atomic mass

d)

Atomic volume

64.

The electronic structures of the atoms of five elements are shown below:

a)

B

b)

C

c)

D

d)

E

65.

The zigzag line on the periodic table divides

a)

alkali metals and transition metals

b)

semimetals and transition metals

c)

metals and nonmetals

d)

inert gases and halogens

66.

An atom of gold with 79 protons, 79 electrons, and 118 neutrons would have a mass number of

a)

39

b)

158

c)

197

d)

276

67.

Which is the correct formula for iron (II) phosphate?

a)

Fe2PO4

b)

Fe3(PO4)2

c)

Fe2PO3

d)

Fe(PO4)2

68.

Name the compound Co(NO3)2

a)

Cobalt (I) nitrate

b)

Cobalt (II) nitrate

c)

Cobalt (I) nitride

d)

Cobalt nitrite

69.

Name the compound N2O4

a)

dinitrogen pentoxide

b)

nitrogen oxide

c)

dinitrogen tetroxide

d)

nitrogen tetroxide

70.

What is the correct formula for potassium sulfite?

a)

KHSO3

b)

K2SO3

c)

KHSO4

d)

K2SO4

71.

Which of the following compounds contains the Mn3+ ion?

a)

MnS

b)

Mn2O3

c)

MnBr2

d)

MnO

72.

Which set of chemical name and chemical formula for the same compound is correct?

a)

ammonium sulfite, (NH4 )2S

b)

iron(III) phosphate, FePO4

c)

lithium carbonate, LiCO3

d)

magnesium dichromate, MgCrO4

73.

The chemicals that are created in a chemical reaction.

a)

reactants

b)

products

c)

both

d)

neither

74.

Fe + Cl2 -- FeCl3, what coefficients would balance the equation?

a)

4, 2, 2

b)

3, 2, 2

c)

2, 3, 2

d)

1, 1, 1

75.

What are the missing coefficients for the skeleton equation below?

Al2 (SO4)3(aq) + KOH(aq) --> Al(OH)3(aq) + K2SO4(aq)

a)

1,3,2,3

b)

2,12,4,6

c)

4,6,2,3

d)

1,6,2,3

76.

What are the missing coefficients for the skeleton equation below?

Cr(s) + Fe(NO3)2(aq) --> Fe(s) + Cr(NO3)3(aq)

a)

4,6,6,2

b)

2,3,2,3

c)

2,3,3,2

d)

1,3,3,1

77.

When the following equation is balanced, what is the coefficient for HCl ?

Mg(s) + HCl(aq) --> MgCl2 (aq) + H2(g)

a)

1

b)

2

c)

3

d)

6

78.

Iron + Sulfuric acid → iron (II) sulfate + Hydrogen

[Fe + H2SO4 → FeSO4 + H2]

is an example of

a)

single replacement

b)

double replacement

c)

formation

d)

decomposition

79.

Sodium oxide + Water → Sodium hydroxide

[Na2O + H2O → 2 NaOH]

is an example of

a)

decomposition

b)

double replacement

c)

single replacement

d)

formation

80.

Which of the following is a single replacement reaction?

a)

a

b)

b

c)

c

d)

d

81.

The solution of one of the following compounds will conduct electricity. This compound is:

a)

CCl4

b)

HCl

c)

CH3Cl

d)

CaCl2

82.

Some are solids, some are liquids, and some are gases at room temperature.

a)

acids

b)

ionic compounds

c)

molecular compounds

83.

What is a anion?

a)

a nonmetal with a negative (-) charge

b)

a nonmetal with a positive (+) charge

c)

a metal with a negative (-) charge

d)

a metal with a positive (+) charge

84.

When dissolved in water, the solution is a good conductor of electricity.

a)

ionic

b)

molecular

85.

Elements that are in the same group have the same

a)

Number of Valence electrons

b)

Number of energy levels

c)

Number of Periods

d)

Number of total electrons

86.

A student collected the following data in an effort to classify four unknown substances. His

results are in the following table.

Suggest a chemical compound that could be represented by Unknowns B and D. Justify your answer. /4

4 lines

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