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Chemistry Semester 1 Exam

Total questions: 96

Worksheet time: 48mins

Name
Class
Date
1.

What state of matter has a definite volume and takes the shape of its container?

a)

Solid

b)

Liquid

c)

Gas

2.

What state of matter has a definite shape and definite volume?

a)

Gas

b)

Liquid

c)

Solid

3.

What is true about homogenous mixtures?

a)

They're known as solutions

b)

They consist of 2 or more phrases

c)

They have compositions that never vary

d)

They're always liquids

4.

The first figure in a written chemical symbol is what?

a)

Boldfaced

b)

Capitalized

c)

Italicized

d)

Underlined

5.

Which of the following is a chemical change?

a)

Mixing 2 cheeses in a bowl

b)

Melting cheese

c)

Grating cheese

d)

Fermenting of cheese

6.

A carbon atom's diameter is 0.000000000154 m. What is this number in scientific notation?

a)

1.54 x { 10 }^{ 12 }

b)

1.54 x { 10 }^{ -12 }

c)

1.54 x { 10 }^{ 10 }

d)

1.54 x { 10 }^{ -10 }

7.

How many significant figures are in 40,500?

a)

2

b)

3

c)

4

d)

5

8.

What temperature scale has no negative temperatures?

a)

Celcius

b)

Fahrenheit

c)

Joule

d)

Kelvin

9.

Density is found by dividing what?

a)

Mass by volume

b)

Mass by area

c)

Volume by mass

d)

Area by mass

10.

What is the volume of 45.6 g of silver if the density of silver is 10.5 g/mL?

a)

0.23 mL

b)

4.34 mL

c)

479 mL

d)

None of the above

11.

The atomic number of an element is the total number of which particles in the nucleus

a)

Neutrons

b)

Protons

c)

Electrons

12.

Isotopes of the same element have different...

a)

Numbers of neutrons

b)

Numbers of electrons

c)

Number of protons

13.

How many protons, neutrons, and electrons are in tin?

a)

50 protons and electrons, 75 neutrons

b)

75 electrons, 50 protons and neutrons

c)

120 neutrons, 50 protons, 75 electrons

d)

None of the above

14.

In Bohr's model of the atom, where are the electrons and protons?

a)

The electrons move around the protons, which are at the center of the atom

b)

The electrons and protons move throughout the atom

c)

The electrons occupy fixed positions around the protons, which are at the center of the atom

d)

None of the above

15.

What's the next atomic orbital in the series 1s, 2s, 2p, 3s, 3p

a)

2d

b)

3d

c)

3f

d)

4s

16.

What is potassium's electron configuration?

a)

1s2 2s2 2p3 3s2 3p2 4s1

b)

1s2 2s2 2p10 3s2 3p3

c)

1s2 2s2 3s2 3p6 3d1

d)

1s2 2s2 2p6 3s2 3p6 4s1

17.

Stable electron configurations are likely to contain what?

a)

Filled energy sublevels

b)

Fewer electrons than unstable configurations

c)

Unfilled s orbitals

d)

Electrons with a clockwise spin

18.

What element is in the same period as phosphorus?

a)

Carbon

b)

Magnesium

c)

Nitrogen

d)

Oxygen

19.

Who arranged the elements according to atomic mass and used the arrangement to predict the properties of missing elements?

a)

Henry Moseley

b)

Ernest Rutherford

c)

John Dalton

d)

Dmitri Mendeleev

20.

Which of the following categories includes the majority of the elements

a)

Metals

b)

Metalloids

c)

Nonmetals

21.

Which of the following is a nonmetal?

a)

Pt

b)

V

c)

Li

d)

Kr

22.

What subatomic particle plays the greatest part in determining an element's properties?

a)

Neutron

b)

Electron

c)

Proton

23.

Which of the following is a representative element?

a)

Fe

b)

Hg

c)

U

d)

Te

24.

Which set has all correct charges?

a)

Na+, Mg+, Al+

b)

K+, Sr2+, O2-

c)

Rb-, Ba2-, P+

d)

N-, O2-, F3-

25.

How many valence electrons are in phosphorus?

a)

2

b)

3

c)

4

d)

5

26.

How many valence electrons are in magnesium?

a)

2

b)

3

c)

4

d)

5

27.

How many valence electrons are in silicon?

a)

2

b)

4

c)

6

d)

8

28.

What is the electron configuration of calcium?

a)

1s2 2s2 2p6 3s2 3p6

b)

1s2 2s2 2p6 3s2 3p4 4s1

c)

1s2 2s2 2p6 3s2 3p5 4s1

d)

1s2 2s2 2p6 3s2

29.

What is gallium's electron configuration?

a)

1s2 2s2 2p6 3s2 3p6

b)

1s2 2s2 2p6 3s2 3p4 4s1

c)

1s2 2s2 2p6 3s2 3p6 4s2 4p6

d)

1s2 2s2 2p6 3s2 3p6 3d10

30.

Which of the following elements doesn't form an ion with a charge of 1+?

a)

Fluorine

b)

Hydrogen

c)

Potassium

d)

Sodium

31.

How many electrons does nitrogen gain to get a noble gas electron configuration?

a)

1

b)

2

c)

3

d)

4

32.

What is the oxide ion's electron configuration?

a)

1s2 2s2 2p4

b)

1s2 2s2 2p6

c)

1s2 2s2

d)

1s2 2s2 2p6

33.

What is the charge on the cation in sodium sulfide?

a)

0

b)

1

c)

2

d)

3

34.

What occurs in an ionic bond?

a)

Oppositely charged ions attract

b)

2 atoms share 2 electrons

c)

2 atoms share more than 2 electrons

d)

Like-charged ions attract

35.

What is the formula unit of sodium nitride?

a)

NaN

b)

Na2N

c)

Na3N

d)

NaN3

36.

What is the formula unit for aluminum oxide?

a)

AlO

b)

Al3O

c)

AlO3

d)

Al2O3

37.

What is the name of the ionic compound formed from lithium and bromine?

a)

Lithium bromine

b)

Lithium bromide

c)

Lithium Bromium

d)

Lithium Bromate

38.

What is the formula for sodium sulfate?

a)

NaSO4

b)

Na2SO4

c)

Na(SO4)2

d)

Na2(SO4)2

39.

Which pair of elements is most likely to form an ionic compound?

a)

Magnesium and fluorine

b)

Nitrogen and sulfur

c)

Oxygen and chlorine

d)

Sodium and aluminum

40.

When naming a transition metal ion that can have more than 1 common ionic charge, the numerical value of the charge is indicated by...

a)

Prefix

b)

Suffix

c)

Roman numeral

d)

Subscript

41.

Which ion does aluminum typically form?

a)

Al3-

b)

Al3+

c)

Al5+

d)

Al5-

42.

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

a)

Lithium

b)

Carbon

c)

Phosphorus

d)

Chlorine

43.

Which compound contains the lead (II) ion?

a)

PbO

b)

PbCl4

c)

Pb2O

d)

Pb2S

44.

What is the correct formula for potassium sulfide?

a)

KHSO3

b)

KHSO4

c)

K2SO3

d)

K2SO4

45.

What is the correct prefix for 9?

a)

Deca-

b)

Nona-

c)

Hexa-

d)

Octa-

46.

What's the formula for sulfurous acid?

a)

H2SO4

b)

H2SO3

c)

H2SO2

d)

H2S

47.

What is the formula for hydrosulfuric acid?

a)

H2S2

b)

H2SO2

c)

HSO2

d)

H2S

48.

What is the name of N2O5?

a)

Nitrous oxide

b)

Dinitrogen pentoxide

c)

Nitrogen dioxide

d)

Nitrate oxide

49.

What is the name of Sn3(PO4)2?

a)

Tritin diphosphate

b)

Tin (II) phosphate

c)

Tin (III) phosphate

d)

Tin (IV) phosphate

50.

What SI unit is used to measure the number of representative particles in a substance?

a)

Kilogram

b)

Ampere

c)

Kelvin

d)

Mole

51.

Which of these isn't an empirical formula?

a)

C2N2H8

b)

C3H8O

c)

BeCr2O7

d)

Sb2S3

52.

Which of the following isn't an example of matter?

a)

Air

b)

Heat

c)

Smoke

d)

Vapor

53.

Which of these is a homogenous mixture?

a)

Saltwater

b)

Beef stew

c)

Sand and water

d)

Soil

54.

What is the electron configuration for potassium?

a)

1S2,2S2,2P2,3S2,3P2,4S1

b)

1S2,2S2,2P10,3S2,3P3

c)

1S2,2S2,3S2,3P6,3d1

d)

1s2,2s2,2p6,3s2,3p6,4s1

55.

In which of the following is the number of neutrons correctly represented?

a)

19/9F has 0 neutrons

b)

75/33 As has 108 neutrons

c)

24/12 Mg has 24 neutrons

d)

238/92 U has 146 neutrons

56.

In which of the following are the symboland name for the ion given correctly?

a)

NH4+: ammonia; H+: hydride

b)

C2H3O2-:acetate; C2O4-:oxalite

c)

OH-:hydroxide; O2-:oxide

d)

PO3 3-: phosphate; PO4 3-: Phosphite

57.

Which of the following correctly provides the names and formulas of polyatomic ions?

a)

carbonate: HCO3- ; bicarbonate : CO3 2-

b)

nitrite: NO- ; nitrate: NO2 -

c)

sulfite: S2- ; Sulfate: SO3-

d)

chromate: CrO4 2- ; dichromate: CrO7 2-

58.

Which of the following shows correctly an ion pair and the ionic compound that the 2 ions form?

a)

Sn4+, N3- ; Sn4N3

b)

Cu2+, O2- ; Cu2O2

c)

Cr3+, I- ; Cr3+, I- ; CrI

d)

Fe3+, O2- ; Fe2O3

59.

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

a)

iron(II) oxide, Fe2O3

b)

aluminum flourate, A1F3

c)

tin(IV) bromide, SnBr4

d)

potassium chrloride, K2Cl2

60.

Which of the follwoing show both the correct formula and correct name of an acid?

a)

HClO2, chloric acid

b)

HNO2, hydronitrous acid

c)

H3PO4, phosphoric acid

d)

HI, iodic acid

61.

Which of the following compounds have the same empirical formula?

a)

CO2 and SO2

b)

C7H14 and C10H20

c)

C4H10 and C10 H4

d)

C6H12 and C6H14

62.

which of the following is NOT an example of matter

a)

air

b)

heat

c)

smoke

d)

water vapor

63.

an example of an extensive property of matter is

a)

temperature

b)

pressure

c)

mass

d)

hardness

64.

a vapor is which state of matter

a)

solid

b)

liquid

c)

gas

d)

all of the above

65.

which state of matter takes both the shape and volume of its container

a)

solid

b)

liquid

c)

gas

d)

both b and c

66.

which of the following is a homogeneous mixture

a)

salt water

b)

beef stew

c)

sand and water

d)

soil

67.

The chemical symbol for iron is

a)

fe

b)

FE

c)

Fe

d)

Ir

68.

Which of the following represents a compound

a)

H

b)

H-3

c)

H20

d)

0-16

69.

All of the following changes to a metal are physical changes except

a)

bending

b)

melting

c)

rusting

d)

polishing

70.

The expression of 5008km in scientific notation is s

a)

5.008 x 10^3km

b)

50.08x10^-4km

c)

5.008x10^-3km

d)

5.008x10^4km

71.

which of the following measurements contains two significant figures

a)

0.004 00L

b)

0.004 04L

c)

0.0000 44 L

d)

0.004 40L

72.

which of the following volumes is the smallest

a)

one microliter

b)

one liter

c)

one mililiter

d)

one deciliter

73.

what i the SI unit of mass

a)

liter

b)

joule

c)

candela

d)

kilogram

74.

what is the temperature of absolute zero measured in C

a)

-373 C

b)

-273C

c)

-173C

d)

-73C

75.

the weight of an object

a)

is the same as its mass

b)

depends on its location

c)

is not affected by gravity

d)

is always the same

76.

who was the man who lived from 460BC -370BC and was among the first to suggest the idea of atoms

a)

Altomos

b)

Dalton

c)

Democrius

d)

THomson

77.

Daltons atomic theory included which idea

a)

all atoms of all elements are the same size

b)

atoms of different elements always combine in one to one ratios

c)

atoms of the same element are always identical

d)

individual atoms can be seen with a microscope

78.

which of the following is true about subatomic particles

a)

electrons are negatively charged and the lightest subatomic particle

b)

protons are positively charged and are the lightest subatomic particle

c)

neutrons have no charge and are the lightest subatomic particle

d)

the mass of a neutron nearly equals the mass of a proton

79.

the particles that are found in the nucleus of an atom are

a)

neutrons and electrons

b)

electrons onlhy

c)

protnons and neutrons

d)

protons and electrons

80.

an element has an atomic number of 76. the number of protons and electrons in a neutral atom of the element are

a)

152 protons and 76 electrons

b)

76 protons and 0 electrons

c)

38 protons and 38 electrons

d)

76 protons and 76 olectrons

81.

the sum of the protons and neutrons in an atom equals the

a)

atomic number

b)

nucleus number

c)

atomic mass

d)

mass number

82.

in the bohr model of the atom an electron in an orbit has fixed

a)

position

b)

color

c)

energy

d)

size

83.

the modern periodic table is arranged in order of increasing atomic

a)

mass

b)

charge

c)

number

d)

radius

84.

what element has the electron configuration 1s2 2s2 2p6 3s2 3p2

a)

nitrogen

b)

selenium

c)

silicon

d)

silver

85.

which of the following elements is a transition metal

a)

cesium

b)

copper

c)

tellurium

d)

tin

86.

in which of the following groups of ions are the charges all shown correctly

a)

Li-, O^2-, S^2 +

b)

Ca2+, Al3+, Br_

c)

K2, F-, Mg2+

d)

Na+, I-, Rb-

87.

what is the charge on the strontium ion

a)

2-

b)

1-

c)

1+

d)

2+

88.

What is the formula for potassium sulfide

a)

KS

b)

K2S

c)

KS2

d)

K2S2

89.

which of the following compounds has the formula KNO3

a)

potassium nitrate

b)

potassium nitride

c)

potassium nitrite

d)

potassium nitrogen oxide

90.

which of these elements does not exist as a diatomic molecule

a)

Ne

b)

F

c)

H

d)

I

91.

which of the following compounds conatins the MN3+ ion

a)

MnS

b)

MnBr2

c)

Mn2O3

d)

MnO

92.

which of the following correctly represents an ion pair and the ionic compound the ions from

a)

Ca2-, F-, CaF2

b)

Na+, Cl-,NaCl2

c)

Ba2, O2, Ba2O2

d)

Pb4, O2-, Pb204

93.

which set of chemical name and chemical formula for the same compund is correct

a)

ammonium sulfate (NH4)2 S

b)

iron (III) phosphate FePO4

c)

lithium carbonate, LiCO3

d)

magnsesium dichromate, MgCr04

94.

when dissolved in water, acids produce

a)

negative ions

b)

polyatomic ions

c)

hydrogen ions

d)

oxide ions

95.

select the correct formula for sulfur hexafluroide

a)

S2F6

b)

F6S03

c)

F6S2

d)

SF6

96.

what is the correct name for the comppound CoCl2

a)

cobalt(I) chlorate

b)

cobalt(I) chloride

c)

cobalt (II) chlorate

d)

cobalt(II) chloride

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