Quiz about CPA Chemistry Midterm Review

Question 1

Used the word "atomos" to decsribe the uncuttable (indivisible) atom.

Accepted Answer

Democritus

Answer

Thomson

Answer

Bohr

Answer

Dalton

Question 2

Proposed that electrons move around the nucleus in specific layers, or shells.

Accepted Answer

Bohr

Answer

Rutherford

Answer

Chadwick

Answer

Thomson

Question 3

This picture best represents ___________________ atomic model.

Accepted Answer

Thomson's

Answer

Dalton's

Answer

Bohr's

Answer

Chadwick's

Question 4

Rutherford and his students did experiments that showed

Accepted Answer

nucleus

Answer

quark

Answer

proton

Answer

electron

Question 5

What is a particle with one negative charge called?

Accepted Answer

electron

Answer

proton

Answer

quark

Answer

neutron

Question 6

Which one of these is Dalton's Model?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 7

Which model was created after the discovery of the nucleus?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 8

Which model was created after the discovery of the electron cloud?

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

D.

Question 9

Who discovered electrons?

Accepted Answer

J.J. Thompson

Answer

Rutherford

Answer

Bohr

Answer

Democritus

Question 10

Which model was created after the discovery of electrons?

Accepted Answer

Option D is correct

Answer

A.

Answer

B.

Answer

C.

Question 11

What is the correct order of scientists in order of their work related to the atomic theory from earliest to most recent?

Accepted Answer

Democritus, John Dalton, JJ Thomson, Ernest Rutherford, and Neils Bohr

Answer

Neils Bohr, Ernest Rutherford, JJ Thomson, John Dalton, & Democritus

Answer

JJ Thomson, John Dalton, Neils Bohr, Ernest Rutherford, & Democritus

Answer

John Dalton, Neils Bohr, JJ Thomson, Democritus, & Ernest Rutherford

Question 12

Ernest Rutherford discovered that the atom was mostly _________________ and has a _______________ charged nucleus.

Accepted Answer

empty space, positively

Answer

empty space, negatively

Answer

full of protons, positively

Answer

full of neutrons, negatively

Question 13

Where are the electrons located?

Accepted Answer

o outside the nucleus

Answer

o inside the nucleus

Answer

o in the middle of the atom

Answer

o in areas that contribute to the atom's mass

Question 14

Within Dalton's Atomic Theory, he had proposed...

Accepted Answer

Atoms were the smallest particles that existed and could not be divisible

Answer

Atoms were the smallest particles that existed and could be divisible

Answer

Atoms were the smallest particles that existed and were round

Question 15

Protons are

Accepted Answer

Positive

Answer

Negative

Answer

No charge

Answer

Atomic Number

Question 16

Neutrons have

Accepted Answer

No charge

Answer

Negative

Answer

Positive

Answer

Atomic Number

Question 17

Electrons are are

Accepted Answer

Negative

Answer

Positive

Answer

No charge

Answer

Atomic Number

Question 18

In the nucleus you can find the

Accepted Answer

Protons and neutrons

Answer

Protons, neutrons and electrons

Answer

Protons and electrons

Answer

Neutrons

Question 19

All of the mass is located in the -

Accepted Answer

Nucleus

Answer

Electron cloud

Answer

APE

Answer

MAN

Question 20

An element has an atomic number of 9 and a mass of 19 amu. What is the number of protons this element has?

Accepted Answer

9

Answer

19

Answer

10

Answer

28

Question 21

An element has an atomic number of 9 and a mass of 19 amu. What is the number of electrons this element has?

Accepted Answer

9

Answer

19

Answer

10

Answer

28

Question 22

An element has an atomic number of 9 and a mass of 19 amu. What is the number of neutrons this element has?

Accepted Answer

10

Answer

9

Answer

19

Answer

28

Question 23

What is represented by the letter T?

Accepted Answer

Nucleus

Answer

Electron

Answer

Proton

Answer

Neutrons

Question 24

What is represented by the letter S?

Accepted Answer

Electron

Answer

Nucleus

Answer

Proton

Answer

Neutrons

Question 25

What is represented by the letter Q?

Accepted Answer

Proton

Answer

Nucleus

Answer

Electron

Answer

Neutrons

Question 26

What is represented by the letter R?

Accepted Answer

Neutrons

Answer

Nucleus

Answer

Electron

Answer

Proton

Question 27

The atomic number is the same as the number of

Accepted Answer

Protons

Answer

Neutrons

Answer

Mass

Answer

Atom

Question 28

What gives you the identity of an element?

Accepted Answer

Protons

Answer

Mass

Answer

Atomic number

Answer

Electrons

Question 29

An element has 3 electrons and a mass of 7. How many protons does this element have?

Accepted Answer

3

Answer

7

Answer

4

Answer

10

Question 30

How many protons does Boron, B have?

Accepted Answer

5

Answer

11

Answer

6

Question 31

How many Neutrons does Hydrogen have?

Accepted Answer

0

Answer

1

Question 32

How many protons does an element with an atomic number of 32 and a mas of 73 have?

Accepted Answer

32

Answer

73

Answer

41

Question 33

How many electrons does Lithium have if it has an atomic number of 3 and mass of 7?

Accepted Answer

3

Answer

7

Answer

4

Question 34

An atom has 25 protons, 30 neutrons, and 25 electrons. What is the charge of the atom's nucleus?

Accepted Answer

+25

Answer

+30

Answer

-25

Answer

-30

Question 35

An atom of Chlorine, Cl, has an atomic number of 17 and a mass of 35. How many subatomic particles are INSIDE the nucleus

Accepted Answer

35

Answer

17

Answer

18

Question 36

An atom of Chlorine, Cl, has an atomic number of 17 and a mass of 35. How many subatomic particles are OUTSIDE the nucleus

Accepted Answer

17

Answer

35

Answer

18

Question 37

How many neutron are in the atom "K"?

Accepted Answer

20

Answer

29

Answer

19

Answer

58

Question 38

How many protons does this isotope of titanium have?

Accepted Answer

22

Answer

26

Answer

48

Answer

70

Question 39

How many electrons are in an atom that has an atomic number of 34, an atomic mass of 74 and a charge of -2?

Accepted Answer

36

Answer

2

Answer

34

Answer

40

Question 40

Write the hyphen notation for the isotope that has 39 protons and 50 neutrons.

Accepted Answer

Yttrium-89

Answer

Yttrium-11

Answer

Tin-39

Answer

Tin-89

Question 41

Chromium has four naturally occurring isotopes (chromium-50, chromium-52, chromium-53, and chromium-54). What is the average atomic mass of Chromium?

Accepted Answer

51.996

Answer

4

Answer

52.25

Answer

Not enough information was given.

Question 42

An element has three isotopes. Given the abundances and relative masses, calculate the average atomic mass and determine (from the periodic table) which element it is.

Abundances | Relative masses

0.005% | 234.04 amu

0.720% | 235.04 amu

99.275% | 238.05 amu

Accepted Answer

Uranium (#92, Atomic Mass: 238.03 amu)

Answer

Fluorine (#9, Atomic Mass: 19.00 amu)

Answer

Mercury (#89, Atomic Mass: 200.59 amu)

Answer

Polonium (#84 209 amu)

Question 43

Four isotopes of lead include lead-204, lead-206, lead-207, and lead-208.  The average atomic mass of lead is 207.2.  Which isotope of lead is likely to be the most abundant.

Accepted Answer

207

Answer

204

Answer

206

Answer

208

Question 44

What is the name of the pictured isotope?

Accepted Answer

Carbon-13

Answer

Carbon-12

Answer

Carbon-14

Answer

Carbon-15

Question 45

What is the Law of Conservation of mass?

Accepted Answer

Mass is never created or destroyed

Answer

Mass is created in a chemical reaction

Answer

Mass is created in a physical change

Answer

New chemicals formed from a chemical reaction have a larger overall mass than the original reactants

Question 46

In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams does reactant B should have?

Accepted Answer

4g

Answer

5g

Answer

9g

Answer

14g

Question 47

If a reaction starts with a total 75g of reactants it should produce

Accepted Answer

a total of 75g of products

Answer

a total of 40g of products

Answer

a total of 180 g of products

Answer

None of the above

Question 48

In the reaction AB-----> A + B reactant AB has 12g and product B has 5g. How many grams should product A have?

Accepted Answer

7g

Answer

17g

Answer

2g

Answer

None of the above

Question 49

24 g of magnesium reacts with 38 g of fluorine to produce _____ g magnesium fluoride

Accepted Answer

62

Answer

38

Answer

24

Answer

14

Question 50

Sodium and chlorine combine to form sodium chloride, or table salt. Sodium and chlorine are:

Accepted Answer

Reactants

Answer

Producers

Answer

Products

Answer

Reactionaries

Question 51

4 grams of hydrogen and 32 grams of oxygen will combine to form:

Accepted Answer

36 grams of water

Answer

28 grams of hydroxide

Answer

32 grams of oxygen

Answer

36 grams of deuterium

Question 52

How many electrons can the d sublevel hold?

Accepted Answer

10

Answer

8

Answer

2

Answer

4

Question 53

What is the maximum number of electrons that an s orbital can have?

Accepted Answer

2 electrons

Answer

1 electron

Answer

3 electrons

Answer

4 electrons

Question 54

How many electrons can the p sublevel hold?

Accepted Answer

6

Answer

8

Answer

2

Answer

4

Question 55

What is the maximum number of electrons that an f orbital can have?

Accepted Answer

14 electrons

Answer

11 electrons

Answer

13 electrons

Answer

12 electrons

Question 56

What electron configuration matches an oxygen atom?

Accepted Answer

1s²2s²2p⁴

Answer

1s²2s²2p⁶3s2, 3p⁶4s²3d¹⁰4p⁵

Answer

1s²2s²2p⁶

Answer

1s²2s²2p⁶3s²3p⁶4s²3d¹

Question 57

Identify the Electron Configuration for Aluminum (Al)

Accepted Answer

1s²2s²2p⁶3s²3p¹

Answer

1s²2s²2p⁶3s²3p³

Answer

1s²2s²2p⁶3s²4p¹

Question 58

What element has the electron configuration

$$1s^22s^22p^3$$

Accepted Answer

Nitrogen

Answer

Oxygen

Answer

Magnessium

Answer

Carbon

Question 59

This orbital diagram represents:

Accepted Answer

O

Answer

C

Answer

B

Answer

N

Question 60

Which orbital is displayed correctly?

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 61

What is incorrect about this orbital diagram?

Accepted Answer

In the there should only be 1 orbital in the first 2p box and one in the 2nd 2p box

Answer

Both arrows in the 2p box should be pointing up

Answer

There is nothing incorrect with this diagram

Answer

All the arrows should be pointing up.

Question 62

Which element has electronic configuration of 1s2 2s2 2p6 3s2 3p2

Accepted Answer

Si

Answer

C

Answer

Mg

Answer

Be

Question 63

How many electrons does Si contain? (click to see image)

Accepted Answer

14

Answer

28

Answer

2

Answer

4

Question 64

What is the shorthand electron configuration for Sulfur atom?

Accepted Answer

[Ne] 3s²3p⁴

Answer

[Ar] 3p4

Answer

[He] 3s²3p⁴

Answer

[Na] 3s²3p³

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