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Point Loma Second Semester Final Exam Review

Total questions: 80

Worksheet time: 14hrs 40mins

Name
Class
Date
1.

Who invented the Periodic Table?

a)

Democritus

b)

Mendeleev

c)

Bohr

d)

Dalton

2.

If an unknown element has 40 protons and it has a -2 charge, how many electrons does it have?

a)

42

b)

38

c)

2

d)

40

3.

Who came up with the term "atom?"

a)

Aristotle

b)

Rutherford

c)

Dalton

d)

Democritus

4.

Who came up with the "Plum Pudding" atomic model?

a)

Schrodinger

b)

Dalton

c)

JJ Thomson

d)

Rutherford

5.

Who discovered the electron?

a)

Bohr

b)

JJ Thomson

c)

Dalton

d)

Schrodinger

6.

If the half-life of an unknown element is 2500 years and you have 50 grams of the element, how long before you have only 6.25 grams?

a)

7500 years

b)

5000 years

c)

2500 years

d)

10,000 years

7.

Which one of these is not a temperature scale?

a)

Fahrenheit

b)

Celsius

c)

Joule

d)

Kelvin

8.

Convert -60o C to F.

a)

213.15o F

b)

-60o F

c)

60o F

d)

-76o F

9.

Convert 95o F to C.

a)

95o C

b)

-35o C

c)

-95o C

d)

35o C

10.

Convert -270.15o C to K.

a)

3 K

b)

-3 K

c)

543 K

d)

-543 K

11.

Convert 675.15 K to C.

a)

475.15o C

b)

375.15o C

c)

402o C

d)

302o C

12.

What is the heat required to raise a 8 kg block of granite from a temperature of 15 K to a temperature of 30 K?

a)

-100,800 J

b)

-100,800 N

c)

100,800 N

d)

100,800 J

13.

What's the best insulator?

a)

Lead

b)

Water

c)

Air

d)

Hydrogen

14.

What's the best conductor?

a)

Carbon

b)

Platinum

c)

Steam

d)

Silver

15.

If you take a 20 kg object apply 240,000 J of heat to warm it up 5o C? What is this element?

a)

Water

b)

Concrete

c)

Ethanol

d)

Aluminum

16.

Conduction, Convection, Radiation?

a)

Conduction

b)

Convection

c)

Radiation

17.

Conduction, Convection, Radiation?

a)

Conduction

b)

Convection

c)

Radiation

18.

Conduction, Convection, Radiation?

a)

Conduction

b)

Convection

c)

Radiation

19.

At which letter is the object all liquid?

a)

E

b)

C

c)

B

d)

A

20.

At what letter is the object a solid/liquid mixture?

a)

D

b)

B

c)

E

d)

C

21.

What state of matter is the object at E?

a)

solid

b)

liquid

c)

gas

d)

plasma

22.

A sound wave is an example of what kind of wave?

a)

transverse wave

b)

electromagnetic wave

c)

longitudinal wave

d)

bow wave

23.

What is "a" pointing to?

a)

crest

b)

trough

c)

amplitude

d)

wavelength

24.

What is "b" pointing to?

a)

crest

b)

trough

c)

amplitude

d)

wavelength

25.

What is "c" pointing to?

a)

crest

b)

trough

c)

amplitude

d)

wavelength

26.

What is "d" pointing to?

a)

crest

b)

trough

c)

amplitude

d)

wavelength

27.

The frequency of a wave is 500 Hz, what is the period?

a)

500 seconds

b)

0.2 seconds

c)

0.002 seconds

d)

0.02 seconds

28.

The period of a wave is 0.0075 seconds, what is the frequency?

a)

133.33 seconds

b)

0.0075 Hz

c)

0.0075 seconds

d)

133.33 Hz

29.

When an object moves slower than the speed of sound it is_________________________.

a)

Hypersonic

b)

Ultrasonic

c)

Supersonic

d)

Subsonic

30.

According to the Doppler Effect, As a wave goes towards from you, you hear a _________________frequency.

a)

Higher

b)

Lower

c)

Same

31.

Massless bundles of electromagnetic energy are called?

a)

particles

b)

photons

c)

waves

d)

molecules

32.

Which one of the EM waves is the deadliest to humans?

a)

x-rays

b)

infrared

c)

gamma rays

d)

radio waves

33.

These are materials that transmit no light.

a)

transparent

b)

translucent

c)

opaque

34.

What does the atomic number tell you?

a)

number of electrons

b)

number of neutrons

c)

number of protons

d)

number of protons and electrons

35.

How do you get the Mass Number ?

a)

add protons and electrons

b)

add neutrons and electrons

c)

add protons and neutrons

d)

add protons, neutrons and electrons

36.

An unknown element has 2 isotopes. If the mass number of one of the isotopes is 50.5 g and it's natural abundance is 62%, and the other isotope is 51.5 g and it's natural abundance is 38%, what is the atomic mass of the original element?

a)

50.88 g

b)

50.5 g

c)

51.5 g

d)

51 g

37.

What is the symbol for wavelength?

a)

α

b)

ω

c)

θ

d)

λ

38.

How many moles of an element do you have if there are

9.5 x 10^24 atoms?

a)

7.9

b)

15.8

c)

158

d)

1580

39.

How many grams of NaCl (58.5 g) do you have in 20 moles of NaCl?

a)

1170 g

b)

58.5 g

c)

2.9 g

d)

117 g

40.

What is a horizontal row called on the Periodic Table called?

a)

group

b)

row

c)

period

d)

family

41.

These are materials that transmit some light.

a)

transparent

b)

translucent

c)

opaque

42.

These are materials that transmit all light.

a)

transparent

b)

translucent

c)

opaque

43.

What does the zigzag line on the Periodic Table separate?

a)

metals and metalloids

b)

metalloids and nonmetals

c)

metals and semi-metals

d)

metals and nonmetals

44.

Determine the Percent Composition of a 550 g sample contains 252.5 g of Carbon, 127.5 g of Silicon, 97.25 g of Oxygen, and 72.75 grams of Bromine.

a)

45.9% C, 13.2% Si, 27.7% O, 13.2% Br

b)

45.9% C, 23.2% Si, 17.7% O, 13.2% Br

c)

44.9% C, 24.2% Si, 17.7% O, 13.2% Br

d)

45.9% C, 23.2% Si, 15.7% O, 15.2% Br

45.

What is this picture?

a)

mixture of elements

b)

mixture of compounds

c)

mixture of compounds and elements

d)

mixture of compounds and molecules

46.

What is the velocity of a sound wave that has a frequency of 200 Hz and has a wavelength of 1.75 m?

a)

114.3 m/s

b)

114.3 m/s2

c)

350 m/s

d)

350 m/s2

47.

What is the speed of sound at -40o ?

a)

371 m/s

b)

291 m/s

c)

355 m/s

d)

307 m/s

48.

An ambulance is headed towards you with a frequency of 400 Hz at 17 m/s. What is the frequency that you hear? Assume that the speed of sound is 340 m/s.

a)

421.1 m/s

b)

381 m/s

c)

381 Hz

d)

421.1 Hz

49.

A police car is headed away from you with a frequency of 400 Hz at 20 m/s. What is the frequency that you hear? Assume that the speed of sound is 340 m/s.

a)

378 m/s

b)

425 m/s

c)

378 Hz

d)

425 Hz

50.

What are the units for Voltage?

a)

Volts

b)

Amperes

c)

Ohms

d)

Coulombs

51.

What are the units for Current?

a)

Volts

b)

Amperes

c)

Ohms

d)

Coulombs

52.

What are the units for Resistance?

a)

Volts

b)

Amperes

c)

Ohms

d)

Coulombs

53.

What are the units for Electrical Charge?

a)

Volts

b)

Amperes

c)

Ohms

d)

Coulombs

54.

Which of these best symbolizes Ohm's Law?

a)

V=I/R

b)

V=IR

c)

V=R/I

d)

R=VI

55.

What is the total resistance?

a)

110 ohms

b)

50 ohms

c)

90 ohms

d)

40 ohms

56.

What is the total current?

a)

4.5 Amps

b)

4.5 Ohms

c)

0.22 Ohms

d)

0.22 Amps

57.

What is the total power?

a)

4.4 Joules

b)

4.4 Watts

c)

0.225 Joules

d)

0.225 Watts

58.

What is the total current?

a)

6 Amps

b)

4 Amps

c)

2 Amps

d)

12 Amps

59.

What is the total resistance?

a)

1 Ohm

b)

11 Ohms

c)

12 Ohms

d)

5 Ohms

60.

What is the total power?

a)

12 Watts

b)

144 Watts

c)

13 Watts

d)

1.1 Watts

61.

Cl has 17 protons, how many protons does Cl+4 have?

a)

4

b)

13

c)

21

d)

17

62.

Si has 14 protons, how many electrons does Si-2 have?

a)

14

b)

2

c)

16

d)

12

63.

A 95 g sample of Iodine has a volume of 19.25 cm3. What is the density of Iodine?

a)

0.2 g/cm3

b)

4.9 g/cm3

c)

114.25 g/cm3

d)

75.75 g/cm3

64.

What is the speed of sound at -100o C?

a)

331 m/s

b)

391 m/s

c)

271 m/s

d)

0 m/s

65.

What is the temperature if the speed of sound is 431 m/s?

a)

167o C

b)

60o C

c)

217o C

d)

0o C

66.

What is a vertical column called on the Periodic Table?

a)

group

b)

row

c)

period

d)

family

67.

Which picture best represents compounds?

a)

A

b)

B

c)

C

d)

D

68.

Which picture best represents molecules?

a)

A

b)

B

c)

C

d)

D

69.

Which picture best represents a mixture of compounds

a)

A

b)

B

c)

C

d)

D

70.

The density of Lead (Pb) is 11.35 g/cm3. If it occupies a volume of 22.75 cm3, what is the mass of Lead?

a)

0.5 g

b)

2 g

c)

258.2 g

d)

34.1 g

71.

The density of Tin (Sn) is 7.3 g/cm3. If you have 112 g of Tin (Sn), what volume would this occupy?

a)

15.3 cm3

b)

0.07cm3

c)

104.7 cm3

d)

119.3 cm3

72.

Gasoline combusts in the engine of a car, releasing carbon dioxide and water vapor. Physical or Chemical Change?

a)

Physical

b)

Chemical

73.

A pellet of sodium metal is cut into two pieces with a knife. Physical or Chemical Change?

a)

Physical

b)

Chemical

74.

Sulfuric acid is poured onto a piece of limestone rock, causing bubbling and fizzing. Physical or Chemical Change?

a)

Physical

b)

Chemical

75.

Wood scraps are placed into a chipper, which turns them into sawdust. Physical or Chemical Change?

a)

Physical

b)

Chemical

76.

What is the Total Resistance?

a)

22 Ω

b)

15.875 Ω

c)

1.875 Ω

d)

12 Ω

77.

What is the Total Current?

a)

0.55 A

b)

6.4 A

c)

0.76 A

d)

1 A

78.

What subatomic particles can you find in the nucleus?

a)

Protons and Electrons

b)

Protons and Neutrons

c)

Electrons and Neutrons

d)

Protons, Electrons, and Neutrons

79.

Two balloons are charged with an identical quantity and type of charge: -0.0025 C. They are held apart at a separation distance of 8 m. Determine the magnitude of the electrical force of repulsion between them.

a)

9.8x10-8 N

b)

-879 N

c)

-9.8x10-8 N

d)

879 N

80.

Which of the following is NOT found on the periodic table?

a)

the atomic number of each element

b)

the density of each element

c)

the symbol of each element

d)

the atomic mass of each element

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