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Fall Gen Chem Final

Total questions: 40

Worksheet time: 20mins

Name
Class
Date
1.

What is chemistry?

a)

the science that seeks to understand the behavior of matter by studying the behavior of atoms and molecules

b)

the science that seeks to understand the behavior of particles by studying the behavior of atoms and molecules

c)

the science that seeks to understand the behavior of stuff by studying the behavior of atoms and molecules

d)

the science that seeks to understand the behavior of materials by studying the behavior of atoms and molecules

2.

What is matter?

a)

anything that occupies space and has mass

b)

anything that doesn’t occupy space and mass

c)

anything that occupies space only

d)

anything that has a mass only

3.

What is the law of conservation of mass?

a)

matter cannot be created or destroyed

b)

matter can be created or destroyed

c)

matter doesn’t exist

d)

Everything is composed of matter

4.

What state of matter is represented in the picture?

a)

solid

b)

liquid

c)

gas

5.

______ mixture is one in which the composition varies from one region of the mixture to another.

a)

Heterogeneous

b)

Homogeneous

c)

Mixture

d)

Pure Subtance

6.

Which is an example of chemical property?

a)

Toxicity

b)

Odor

c)

Color

d)

Density

7.

What is the SI unit for temperature ?

a)

K

b)

F

c)

C

d)

T

8.

A sick child has a temperature of 40.00 °C. What is the child’s temperature in K?

a)

313.15 K

b)

313 K

c)

313.2 K

d)

300 K

9.

________ properties are independent of the amount of substance.

a)

Intensive

b)

Extensive

c)

Density

d)

Derived

10.

What is the density of a piece of metal that has a mass of 4.53 g and a volume of 1.33 cm3 ?

a)

3.41 g/cm3

b)

3.40 g/cm3

c)

3.406 g/cm3

d)

0.294 g/cm3

e)

0.2935 g/cm3

11.

How many significant figures in the following number: 0.04450

a)

4

b)

5

c)

6

d)

3

12.

The mass of a fuel in a jet must be calculated before each flight to ensure that the jet is not too heavy to fly. A 747 is fueled with 173,231 L of jet fuel. If the density of the fuel is 0.768 g/cm3 , what is the mass of the fuel in kilograms?

a)

1.33 x105 kg

b)

768 kg

c)

1.33 x 108 kg

d)

7.68 kg

e)

1.33 x 102 kg

13.

An acetaminophen suspension for infants contains 80 mg/0.80 mL suspension. The recommend dose is 15 mg/kg body weight. How many mL of this suspension should be given to an infant weighing 14 lbs? (1 kg = 2.205 lbs)

a)

0.95 mL

b)

9.52 mL

c)

5.79 mL

d)

76.2 mL

14.

Who discovered the electron?

a)

JJ Thomson

b)

Ernest Rutherford

c)

James Chadwick

d)

Eugene Goldstein

15.

What are isotopes?

a)

Atoms with the same number of protons but different number of neutrons

b)

Atoms with the same number of electrons but different number of neutrons

c)

Atoms with the same number of protons but different number of electrons

d)

Atoms with the same number of neutrons but different number protons

16.

What is the atomic number for the chlorine isotope with 18 neutrons?

a)

35

b)

17

c)

18

d)

36

17.

Gallium has two naturally occurring isotopes: Ga-69 with a mass of 68.9256 amu and a natural abundance of 60.11% and Ga-71. What is the mass of Ga-71?

a)

70.92 amu

b)

68.99 amu

c)

69.72 amu

d)

70.03 amu

18.

______ are positively charged ions.

a)

Cations

b)

Anions

c)

Isotopes

d)

Protons

19.

How many copper atoms are there is 2.33 mol of copper?

a)

1.40 x 1024 atoms Cu

b)

3.87 x 10-24 atoms Cu

c)

3.86 x 10-24 atoms Cu

d)

1.41 x 1024 atoms Cu

20.

What is the wavelength in nm of the red light emitted by a barcode scanner that has a frequency of 4.62 x 1014 s-1 ?

a)

6.49 x 10-7 nm

b)

649 nm

c)

6.493 x 10-7 nm

d)

650 nm

e)

700 nm

21.

What form of electromagnetic radiation has the shortest wavelength?

a)

Gamma Ray

b)

X-Ray

c)

UV

d)

Microwaves

e)

Radio Waves

22.

A nitrogen laser pulse with a wavelength of 337 nm contains 3.83 mJ of energy. How many photons does it contain?

a)

6.49 x 1015 photons

b)

5.90 x 10-19 photons

c)

6.491 x 1015 photons

d)

5.91 x 10-19 photons

23.

What is the velocity of an electron that has a de Broglie wavelength of 1.2 x 10-10 m ?

(e- = 9.11 x10-31 Kg) (1 J = 1 Kg⋅(m2/s2)

a)

6.1 x 106 m/s

b)

6.0 x 106 m/s

c)

5.0 x 10-54 m/s

d)

5.1 x 10-54 m/s

24.

What does the Heisenberg’s Uncertainty Principle state?

a)

The more accurately you know the position of an electron, the less accurately you can know its velocity and vice versa.

b)

The more accurately you know the position of an ion, the less accurately you can know its velocity and vice versa.

c)

The more accurately you know the position of an atom, the less accurately you can know its velocity and vice versa.

d)

The more accurately you know the position of an proton, the less accurately you can know its velocity and vice versa.

25.

What values of l are possible for n=3?

a)

0,1,2

b)

0,1

c)

0,1,2,3

d)

0

26.

Suppose an electron in an atom relaxes from an orbital in the n=4 to an orbital in the n=3 level. What is the energy difference corresponding to this transition?

a)

-1.06 x 10-19 J

b)

1.06 x 10-19 J

c)

-1.06 x 1019 J

d)

1.06 x 1019 J

27.

What is the electron configuration for Calcium?

a)

[Ar] 4s2

b)

[Ne] 4s2

c)

[Kr] 4s2

d)

1s²1p²2s⁶3s²3p⁶4s²

28.

What is the electron configuration for Iodine?

a)

[Kr] 5s24d105p5

b)

[Kr] 5s14d105p5

c)

[Kr] 5s24d105p3

d)

[Kr] 5s24d65p5

29.

What is the formula for cesium phosphide?

a)

Cs3P

b)

CsP3

c)

CsP

d)

Cs3P3

30.

What is the correct Lewis structure for XeF4 ?

a)

b)

c)

d)

31.

You perform combustion analysis on an unknown hydrocarbon shows that burning 20.00 grams of the compound produces 35.92 grams of H20 and 58.55 grams of CO2. Determine the empirical formula of the compound.

a)

CH3

b)

CH

c)

CH2

d)

CH4

32.

Group 17 elements are called the _____.

a)

noble gases

b)

halogens

c)

alkali metals

d)

alkaline earth metals

33.

Group 1 elements are called the _____.

a)

noble gases

b)

halogens

c)

alkali metals

d)

alkaline earth metals

34.

Based on periodic trends, what atom has a larger radius?

a)

N

b)

F

c)

O

d)

C

35.

Choose the larger atom or ion from the following: S or S2-

a)

S

b)

S2-

36.

Choose the larger atom or ion from the following: Ca or Ca2+

a)

Ca

b)

Ca2+

37.

Based on periodic trends, which element has the highest first ionization energy?

a)

Al

b)

P

c)

Si

38.

Name the compound: PCl5

a)

Phosphorous pentachloride

b)

Phosporous chloride

c)

Pentaphosporous chloride

d)

Phosphate Chloride

39.

What is the mass number of Cobalt?

a)

59

b)

58.93

c)

58.9

d)

58

e)

27

40.

How many electrons does Al3+ have?

a)

13

b)

10

c)

27

d)

14

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