Deck 2: Atoms and Elements

Question 1

Give the number of electrons for carbon-14,with a -2 charge.

A)7
B)4
C)6
D)8

Answer 1

8

Question 2

What element is defined by the following information?
P⁺ = 17 n° = 20 e^- = 17

A)calcium
B)rubidium
C)chlorine
D)neon
E)oxygen

Answer 2

chlorine

Question 3

What species is represented by the following information?
P⁺ = 12 n° = 14 e^- = 10

A)Si⁴⁺
B)Mg
C)Ne
D)Si
E)Mg²⁺

Answer 3

Mg²⁺

Question 4

The atomic mass for cadmium is ________.

A)48
B)112.41
C)40.08
D)20

Question 5

Determine the number of protons,neutrons and electrons in the following:
X

A)p⁺ = 18 n° = 18 e^- = 22
B)p⁺ = 18 n° = 22 e^- = 18
C)p⁺ = 22 n° = 18 e^- = 18
D)p⁺ = 18 n° = 22 e^- = 40
E)p⁺ = 40 n° = 22 e^- = 18

Question 6

What does "X" represent in the following symbol?
X

A)silicon
B)sulfur
C)zinc
D)ruthenium
E)nickel

Question 7

What does "X" represent in the following symbol?
X

A)mercury
B)chlorine
C)scandium
D)bromine
E)selenium

Question 8

The mass number is equal to

A)the sum of the sum of the electrons and protons.
B)the sum of the sum of the neutrons and electrons.
C)the sum of the number of protons,neutrons,and electrons.
D)the sum of the number of protons and neutrons.

Question 9

Determine the number of protons,neutrons and electrons in the following:
X

A)p⁺ = 36 n° = 29 e^- = 36
B)p⁺ = 29 n° = 29 e^- = 36
C)p⁺ = 36 n° = 36 e^- = 29
D)p⁺ = 29 n° = 36 e^- = 29
E)p⁺ = 29 n° = 36 e^- = 36

Question 10

What element is defined by the following information?
P⁺ = 20 n° = 20 e^- = 20

A)zirconium
B)calcium
C)potassium
D)neon
E)argon

Question 11

Identify the element that has an atomic number of 40.

A)neon
B)calcium
C)zirconium
D)bromine

Question 12

Determine the number of protons,neutrons and electrons in the following:
X

A)p⁺ = 12 n° = 25 e^- = 12
B)p⁺ = 12 n° = 12 e^- = 13
C)p⁺ = 12 n° = 13 e^- = 12
D)p⁺ = 25 n° = 12 e^- = 13
E)p⁺ = 12 n° = 13 e^- = 25

Question 13

What species is represented by the following information?
P⁺ = 47 n° = 62 e^- = 46

A)Ag⁺
B)Nd
C)Pd
D)Ag
E)Pd⁺

Question 14

What species is represented by the following information?
P⁺ = 17 n° = 18 e^- = 18

A)Cl
B)Cl^-
C)Ar
D)Ar⁺
E)Kr

Question 15

Which of the following statements is false according to Dalton's Atomic Theory?

A)Atoms combine in simple whole number ratios to form compounds.
B)All atoms of chlorine have identical properties that distinguish them from other elements.
C)One carbon atom will combine with one oxygen atom to form a molecule of carbon monoxide.
D)Atoms of sodium do not change into another element during chemical reaction with chlorine.
E)An atom of nitrogen can be broken down into smaller particles that will still have the unique properties of nitrogen.

Question 16

Which of the following is an example of the law of multiple proportions?

A)A sample of chlorine is found to contain three times as much Cl-35 as Cl-37.
B)Two different compounds formed from carbon and oxygen have the following mass ratios:
1.33 g O: 1 g C and 2.66 g O: 1 g C.
C)Two different samples of table salt are found to have the same ratio of sodium to chlorine.
D)The atomic mass of bromine is found to be 79.90 amu.
E)Nitrogen dioxide always has a mass ratio of 2.28 g O: 1 g N.

Question 17

Which of the following statements about isotopes is true?

A)Isotopes of the same element differ only in the number of electrons they contain.
B)An isotope of an atom with a larger number of neutrons is larger than an isotope of the same atom that contains fewer neutrons.
C)Isotopes of the same element have the same mass.
D)Isotopes of the same element don't usually have the same properties.
E)Some elements have 3 or more naturally occurring isotopes.

Question 18

Which of the following statements about subatomic particles is true?

A)A neutral atom contains the same number of protons and electrons.
B)Protons have about the same mass as electrons.
C)Electrons make up most of the mass of an atom.
D)Protons and neutrons have opposite,but equal in magnitude,charges.
E)Neutrons and electrons are found in the nucleus of an atom.

Question 19

What element is defined by the following information?
P⁺ = 11 n° = 12 e^- = 11

A)sodium
B)vanadium
C)magnesium
D)titanium

Question 20

Identify a cation.

A)an atom that has lost an electron
B)an atom that has gained an electron
C)an atom that has lost a proton
D)an atom that has gained a proton

Question 21

Give the number of neutrons for carbon-14,with a -2 charge.

A)7
B)4
C)6
D)8

Question 22

Which of the following elements is an alkali metal?

A)Zn
B)Xe
C)F
D)Li
E)Ca

Question 23

Predict the charge that the ion formed from bromine would have.

A)1-
B)2+
C)1+
D)4+
E)2-

Question 24

Which of the following elements is not a metal?

A)Ba
B)Mg
C)Xe
D)Pb
E)Ga

Question 25

Which of the following elements is an actinide?

A)U
B)Pm
C)Rf
D)Po

Question 26

Which of the following elements is an alkaline earth metal?

A)Cs
B)Cu
C)Mg
D)Ti
E)Br

Question 27

Predict the charge that an aluminum ion would have.

A)5-
B)1+
C)1-
D)2+
E)3+

Question 28

Which of the following elements is a nonmetal?

A)Zn
B)Cs
C)Ca
D)Co
E)P

Question 29

Which of the following elements is a halogen?

A)Ne
B)I
C)O
D)Mg
E)K

Question 30

Predict the charge that an ion formed from sulfur would have.

A)1-
B)6+
C)3-
D)4+
E)2-

Question 31

Which of the following elements is a noble gas?

A)Ar
B)Br
C)N
D)O
E)K

Question 32

Which of the following elements is a metalloid?

A)Al
B)Ge
C)C
D)Sn

Question 33

What does "X" represent in the following symbol?
X

A)tin
B)copper
C)palladium
D)niobium
E)uranium

Question 34

Which of the following does not describe a metal?

A)Good conductor of heat
B)Good conductor of electricity
C)Tends to gain electrons
D)Forms ionic compounds with nonmetals
E)Found on the left side of the periodic table

Question 35

Which of the following elements is a lanthinide?

A)U
B)Pm
C)Rf
D)Po

Question 36

Which of the following statements is false?

A)Halogens are very reactive elements.
B)The alkali metals are fairly unreactive.
C)Sulfur is a main group element.
D)Noble gases do not usually form ions.
E)Zn is a transition metal.

Question 37

Which of the following statements is false?

A)Anions are usually larger than their corresponding atom.
B)Metals tend to form cations.
C)Atoms are usually larger than their corresponding cation.
D)The halogens tend to form 1+ ions.
E)Nonmetals tend to gain electrons.

Question 38

Predict the charge that a calcium ion would have.

A)6-
B)2-
C)3+
D)2+
E)1+

Question 39

Which of the following elements is a metal?

A)As
B)C
C)I
D)Sn
E)Se

Question 40

Which of the following does not describe a nonmetal?

A)Tend to gain electrons
B)Found in the upper right hand corner of the periodic table.
C)Poor conductor of electricity
D)Nonmetals are generally unreactive.
E)Poor conductor of heat

Question 41

How many Li atoms are contained in 97.9 g of Li?

A)5.90 × 10²⁵ Li atoms
B)7.09 × 10²¹ Li atoms
C)8.49 × 10²⁴ Li atoms
D)4.27 × 10²² Li atoms
E)4.18 × 10²⁴ Li atoms

Question 42

How many moles of Kr are contained in 398 mg of Kr?

A)4.75 × 10^-3 moles Kr
B)33.4 moles Kr
C)2.11 × 10^-4 moles Kr
D)2.99 × 10^-3 moles Kr
E)1.19 × 10^-4 moles Kr

Question 43

How many moles of potassium are contained in 449 g of potassium?

A)11.5 moles
B)17.6 moles
C)69.2 moles
D)23.9 moles
E)41.5 moles

Question 44

What mass,in kg,does 5.84 moles of titanium (Ti)have?

A)0.352 kg
B)0.122 kg
C)0.820 kg
D)0.280 kg
E)0.632 kg

Question 45

Silver has an atomic mass of 107.868 amu.The Ag-109 isotope (108.905 amu)is 48.16%.What is the amu of the other isotope?

A)106.905 amu
B)106.908 amu
C)106.903 amu
D)106.911 amu

Question 46

Calculate the mass,in kg,of 4.87 × 10²⁵ atoms of Zn.

A)5.29 kg
B)1.89 kg
C)8.09 kg
D)1.24 kg
E)1.09 kg

Question 47

Semiconductors usually are

A)metalloids.
B)noble gases.
C)nonmetals.
D)metals.

Question 48

Calculate the atomic mass of element "X",if it has 2 naturally occurring isotopes with the following masses and natural abundances: X-45 44.8776 amu 32.88%
X-47 46.9443 amu 67.12%

A)46.26 amu
B)45.91 amu
C)46.34 amu
D)46.84 amu
E)44.99 amu

Question 49

Which of the following contains the fewest atoms? You shouldn't need to do a calculation here.

A)4.0 g Li
B)4.0 g Na
C)4.0 g Rb
D)4.0 g K
E)4.0 g Ca

Question 50

What mass,in mg,does 2.63 moles of nickel have?

A)44.8 mg
B)2.23 × 10⁴ mg
C)129 mg
D)3.56 × 10⁵ mg
E)1.54 × 10⁵ mg

Question 51

How many phosphorus atoms are contained in 158 kg of phosphorus?

A)3.07 × 10²⁷ phosphorus atoms
B)2.95 × 10²⁷ phosphorus atoms
C)3.25 × 10²⁸ phosphorus atoms
D)1.18 × 10²⁴ phosphorus atoms
E)8.47 × 10²⁴ phosphorus atoms

Question 52

Calculate the mass,in g,of 1.9 × 10²⁴ atoms of Pb.

A)3.9 × 10² g
B)2.4 × 10² g
C)3.2 × 10² g
D)1.5 × 10² g
E)6.5 × 10² g

Question 53

How many iron atoms are contained in 354 g of iron?

A)2.62 × 10²⁵ Fe atoms
B)2.13 × 10²⁶ Fe atoms
C)4.69 × 10²⁴ Fe atoms
D)3.82 × 10²⁴ Fe atoms
E)9.50 × 10²² Fe atoms

Question 54

What mass (in g)does 3.99 moles of Kr have?

A)334 g
B)476 g
C)211 g
D)240 g
E)144 g

Question 55

Gallium has an atomic mass of 69.723 amu.The Ga-69 isotope (68.926 amu)is 60.11%.What is the amu of the other isotope?

A)70.924 amu
B)70.928 amu
C)70.932 amu
D)70.920 amu

Question 56

How many argon atoms are contained in 7.66 × 10⁵ mmol of argon?

A)4.61 × 10²⁶ Ar atoms
B)1.84 × 10²⁸ Ar atoms
C)1.15 × 10²⁸ Ar atoms
D)7.86 × 10²⁰ Ar atoms
E)3.24 × 10²⁶ Ar atoms

Question 57

How many silver atoms are contained in 3.75 moles of silver?

A)6.23 × 10²⁴ silver atoms
B)2.26 × 10²⁴ silver atoms
C)1.61 × 10²³ silver atoms
D)2.44 × 10²⁶ silver atoms
E)6.50 × 10²⁵ silver atoms

Question 58

How many xenon atoms are contained in 2.36 moles of xenon?

A)3.92 × 10²⁴ xenon atoms
B)2.55 × 10²³ xenon atoms
C)1.42 × 10²⁴ xenon atoms
D)7.91 × 10²⁵ xenon atoms
E)1.87 × 10²⁶ xenon atoms

Question 59

Which of the following contains the most atoms? You shouldn't need to do a calculation here.

A)10.0 g Ne
B)10.0 g He
C)10.0 g Ar
D)10.0 g Kr
E)10.0 g Mg

Question 60

How many moles of Cs are contained in 595 kg of Cs?

A)2.23 × 10² moles Cs
B)4.48 × 10³ moles Cs
C)7.91 × 10⁴ moles Cs
D)1.26 × 10³ moles Cs
E)5.39 × 10² moles Cs

Question 61

Give the name of the element whose symbol is Na.

Question 62

An atom of ¹⁴C contains ________ protons.

A)6
B)20
C)8
D)10
E)14

Question 63

Predict the charge of the most stable ion of potassium.

A)3+
B)1-
C)2+
D)2-
E)1+

Question 64

Calculate the mass (in ng)of 2.33 × 10²⁰ atoms of oxygen.

A)6.19 × 10⁶ ng
B)1.62 × 10⁷ ng
C)2.25 × 10³ ng
D)3.73 × 10⁶ ng
E)4.69 × 10⁷ ng

Question 65

Describe an atom and what it is made up of according to modern atomic theory.

Question 66

An atom of ¹³¹Xe contains ________ electrons_.

A)131
B)185
C)77
D)123
E)54

Question 67

An ion has 8 protons,9 neutrons,and 10 electrons.The symbol for the ion is ________.

A)(¹⁷O^2- )
B)(¹⁷O²⁺ )
C)(¹⁹F⁺ )
D)(¹⁹F^- )
E)(¹⁷Ne²⁺ )

Question 68

What is the chemical symbol for mercury?

A)Ag
B)Au
C)Hg
D)Pb

Question 69

Predict the charge of the most stable ion of bromine.

A)2+
B)1+
C)3+
D)1-
E)2-

Question 70

The atomic number of an atom of ⁸⁰Br is ________.

A)115
B)35
C)45
D)73
E)80

Question 71

What group of elements in the periodic table are the most unreactive and why?

Question 72

How many protons does the Br^- ion possess?

A)34
B)36
C)6
D)8
E)35

Question 73

Why do the isotopes of the same element have the same atomic size?

Question 74

Describe the difference between ions and isotopes.

Question 75

How many electrons does the Al³⁺ ion possess?

A)16
B)10
C)6
D)0
E)13

Question 76

What is the chemical symbol for titanium?

A)Th
B)Ti
C)Tl
D)Tm

Question 77

Why do elements in the same group tend to have similar chemical properties?

Question 78

Define atomic mass.

Question 79

Why doesn't a mass spectrum of silver have a peak at 107.9 amu?

Question 80

Are anions typically larger or smaller than their corresponding atom? Why?