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Chem Midterm Part 2

Total questions: 61

Worksheet time: 36mins

Name
Class
Date
1.

Physical or chemical property: malleability

a)

Physical

b)

Chemical

2.

Physical or chemical property: luster

a)

Physical

b)

Chemical

3.

Physical or chemical property: magnetism

a)

Physical

b)

Chemical

4.

Physical or chemical property: supports combustion

a)

Physical

b)

Chemical

5.

Physical or chemical property: an apple turns brown when its skin is broken

a)

Physical

b)

Chemical

6.

Physical or chemical change: solid sodium hydroxide dissolves in water

a)

Physical

b)

Chemical

7.

Physical or chemical change: wood is rotting

a)

Physical

b)

Chemical

8.

Physical or chemical change: grass is growing on a lawn

a)

Physical

b)

Chemical

9.

Which mixture separation technique is used to separate compounds based on boiling points?

a)

Distillation

b)

Filtration

c)

Chromatography

d)

Centrifugation

10.

Chromatography is used to separate

a)

Compounds based on polarity

b)

Insoluble solids vs. solution

c)

Compounds based on boiling points

d)

Atoms by nuclear fusion

11.

Which two separation techniques are used to separated insoluble solids from a solution? (ex. mud from water)

a)

Filtration, Distillation

b)

Filtration, Centrifugation

c)

Centrifugation, Distillation

d)

Distillation, Chromatography

12.

Which mixture separation technique would you use to separate blue and red food coloring?

a)

Distillation

b)

Chromatography

c)

Centrifugation

d)

Filtration

13.

What is vapor pressure?

a)

The pressure exerted by gas in equilibrium with a liquid in a closed system

b)

The amount of energy required for a chemical change to occur

c)

The pressure exerted by electrons in equilibrium with protons in an atom

d)

The temperature of a pot of boiling water

14.

The equilibrium vapor pressure of a liquid ___________ as temperature ____________.

a)

increases; increases

b)

increases; decreases

c)

decreases; increases

d)

decreases; decreases

15.

The boiling point of a substance at ______________ is called the "normal boiling point" of the substance

a)

1 atm

b)

100 atm

c)

120 °C

d)

100 °F

16.

Name the element: Br

a)

Bromine

b)

Boron

c)

Barium

d)

Beryllium

17.

Name the element: Cr

a)

Chromium

b)

Cobalt

c)

Chromine

d)

Chlorine

18.

Name the element: Ar

a)

Gold

b)

Argon

c)

Arsenic

d)

Silver

19.

Name the element: Si

a)

Silicon

b)

Sulfur

c)

Strontium

d)

Selenium

20.

Name the element: Sb

a)

Antimony

b)

Tin

c)

Strontium

d)

Bismuth

21.

Name the symbol: Mercury

a)

Hg

b)

He

c)

Sb

d)

Sg

22.

Name the symbol: Manganese

a)

Mn

b)

Mg

c)

Na

d)

Me

23.

Name the symbol: Tin

a)

Sn

b)

Sb

c)

Ti

d)

Tn

24.

Name the symbol: Tungsten

a)

T

b)

W

c)

Tu

d)

Ti

25.

What is the formula for the mass number of an element?

a)

protons + neutrons

b)

protons - neutrons

c)

neutrons - protons

d)

protons - electrons

26.

Which of the following is NOT part of the theories of Niels Bohr?

a)

Quantized energy levels

b)

Charge of an electron = 1.602 x 10-19C

c)

Planetary model

d)

Atoms can absorb photons

27.

What was Chadwick's discovery?

a)

the neutron

b)

the proton

c)

alpha particles

d)

atoms can absorb photons

28.

Who proposed the planetary model of atoms?

a)

Bohr

b)

Lewis

c)

Dalton

d)

Rutherford

29.

Which of the following is NOT part of Dalton's theories?

a)

Matter is made up of atoms

b)

Atoms of the same element are identical

c)

Plum pudding model

d)

In chemical reactions atoms are rearranged

30.

Which of the following parts of Dalton's theories have been disproven?

a)

Matter is made up of atoms

b)

Atoms join in simple ratios to form compounds

c)

Atoms can't be subdivided, created, or destroyed

d)

In chemical reactions atoms are rearranged

31.

Who proposed the plum pudding model of atoms?

a)

JJ Thomson

b)

John Dalton

c)

Robert Millikan

d)

James Chadwick

32.

Who discovered the electron?

a)

JJ Thomson

b)

Robert Millikan

c)

Democritus

d)

Niels Bohr

33.

Who performed the "oil drop experiment" to find the charge of an electron?

a)

JJ Thomson

b)

Niels Bohr

c)

Robert Millikan

d)

Ernest Rutherford

34.

Who performed the "gold foil experiment"?

a)

Ernest Rutherford

b)

JJ Thomson

c)

Robert Millikan

d)

Albert Einstein

35.

What were the results of the gold foil experiment?

a)

Discovered that atoms are made up of a dense nucleus surrounded by empty space with electrons

b)

Discovered the neutron

c)

Discovered the charge of an electron

d)

Discovered electron energy levels

36.

Which statement says that you can't know the exact position and velocity of an electron at the same time?

a)

Heisenberg's uncertainty principle

b)

Schrodinger's law

c)

Schrodinger's uncertainty principle

d)

Electron spin theory

37.

Modern atomic theory states that an electron can act as a ___________ or _____________

a)

wave; particle

b)

particle; energy

c)

wave; energy

d)

frequency; photon

38.

The principle quantum number (n) can range from 1 to _____

a)

7

b)

5

c)

9

d)

½

39.

The angular momentum quantum number (l) can range from 1 to _____

a)

n - 1

b)

n + 1

c)

½n

d)

2n

40.

The magnetic quantum number (ml) can range from

a)

1 to n-1

b)

-l to l

c)

-n to n

d)

-½l to ½l

41.

What would be the magnetic quantum number (ml) for an electron in the s orbital

a)

0

b)

-1

c)

1

d)

½

42.

Which of the following is a possible electron spin quantum number (ms)?

a)

-½

b)

¼

c)

1

d)

2

43.

Which of the following is a possible set of quantum numbers for an electron in a 3d orbital?

a)

3, 2, -1, -½

b)

3, 1, -2, ½

c)

2, 2, 0, ½

d)

2, 1, -1, ¼

44.

Which of the following is a possible set of quantum numbers for an electron in a 4p orbital?

a)

4, 2, 1, ½

b)

4, 3, 1, ½

c)

4, 2, 3, -½

d)

3, 2, 1, ½

45.

Which angular momentum quantum number (l) represents a d orbital?

a)

0

b)

1

c)

2

d)

3

46.

What letter represents the most complex orbital shape?

a)

s

b)

p

c)

d

d)

f

47.

Which of the following is the Aufbau principle?

a)

Lowest energy orbitals are filled first

b)

Orbitals can contain a maximum of 2 electrons

c)

Each electron in an orbital has a different spin

d)

Electrons prefer to be unpaired when in orbitals with equal energy

48.

Which of the following is NOT part of the Pauli exclusion principle?

a)

Orbitals can contain a maximum of 2 electrons

b)

Each electron in an orbital has a different spin

c)

Each electron has a unique set of quantum numbers

d)

Electrons prefer to be unpaired when in orbitals with equal energy

49.

Which rule includes that electrons prefer to be unpaired when in orbitals with equal energy?

a)

Aufbau

b)

Hund's

c)

Pauli

d)

Heisenberg

50.

Which of the following is the correct electron configuration for sodium?

a)

1s2, 2s2, 2p6, 3s1

b)

1s2, 2p6, 2s2, 3p1

c)

1s2, 2s2,2p6,3s2, 3p4

d)

1s2, 2s2, 2p5, 3s2

51.

Which of the following is the correct electron configuration for copper?

a)

1s2, 2s2, 2p6, 3s2, 3p6, 4s1, 3d10

b)

1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d9

c)

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

d)

1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 4p6, 3d3

52.

Complete the electron configuration exception: When transition metals form ions, they lose electrons from ___________ first.

a)

the last s-orbital

b)

the largest orbital

c)

the smallest orbital

d)

the first s-orbital

53.

Which of the following is the correct electron configuration for a +2 ion of iron?

a)

1s2, 2s2, 2p6, 3s2, 3p6, 3d6

b)

1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d4

c)

2s2, 2p6, 3s2, 3p6, 4s2, 3d6

d)

1s2, 2s2, 2p6, 3s2, 3p6, 3d6

54.

Which of the following is the correct noble gas notation electron configuration for nickel?

a)

[Ar] 4s2, 3d8

b)

[Ar] 1s2, 2s2, 2p6

c)

[Ne] 4s2, 3d8

d)

[Ni] 4s2, 3d8

55.

A diamagnetic atom has _____________.

a)

unpaired electrons

b)

all paired electrons

c)

less than 4 valence electrons

d)

more than 4 valence electrons

56.

A paramagnetic atom has _____________.

a)

unpaired electrons

b)

all paired electrons

c)

less than 4 valence electrons

d)

more than 4 valence electrons

57.

Which law states that a chemical compound always contains the same proportion of elements by mass?

a)

Law of definite proportions

b)

Law of multiple proportions

c)

Law of conservation of mass

d)

Law of massive proportions

58.

Which law states that if 2 elements form more than 1 compound then the ratios of elements will be small whole numbers?

a)

Law of definite proportions

b)

Law of multiple proportions

c)

Law of conservation of mass

d)

Law of proportions of mass

59.

Which law states that matter cannot be created or destroyed during a physical or chemical reaction?

a)

Law of conservation of mass

b)

Law of definite proportions

c)

Schrodinger's law

d)

Law of massive proportions

60.

The number of ____________ is always different in the isotopes of Uranium.

a)

ions

b)

protons

c)

neutrons

d)

electrons

61.

The number of ___________ in the nucleus determines an atom's atomic number.

a)

protons

b)

neutrons

c)

electrons

d)

ions

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