chapter 4
28) The smallest particle of an element that retains the characteristics of the element is a(n) ________.A) electronB) neutron C) protonD) atomE) nucleus
d
33) The number of neutrons in an atom is equal to ________. A) the atomic numberB) the mass numberC) the mass number + the atomic number D) the mass number - the atomic number E) the number of protons
d
35) What is the mass number of an atom of potassium that has 20 neutrons? A) 15B) 19C) 35 D) 39E) 59
d
37) Consider a neutral atom with 30 protons and 34 neutrons. The mass number for this atom is ________.A) 30B) 32 C) 34D) 64E) 94
d
Write the electron arrangement for the atom shown. 13) Magnesium
2,8,2
Write the electron arrangement for the atom shown. 14) Phosphorus
2,8,5
Write the electron arrangement for the atom shown. 12) Sulfur
2,8,6
Write the electron arrangement for the atom shown. 10) Chlorine
2,8,7
Write the electron arrangement for the atom shown. 11) Argon
2,8,8
3) Select the correct symbol for the element aluminum. A) AlB) AmC) Au D) SnE) Ag
a
Write the electron arrangement for the atom shown. 9) Sodium
2,8,1
6) The symbol for silver is ________.
Ag
8) The symbol for calcium is ________.
Ca
4) The symbol for copper is ________.
Cu
4.3 True/False Questions 6) Radon is a metal.
False
1) The symbol for sodium is ________.
Na
5) The symbol for sulfur is ________.
S
7) The symbol for tin is ________.
Sn
True/False Questions 1) The symbol for gold is Au.
True
10) Ca is the symbol for ________. A) calciumB) carbonC) cobalt D) copperE) cadmium
a
14) The Group 8A (18) elements ________.A) are unreactive and are rarely found in combination with other elements B) are good conductors of electricityC) melt at high temperaturesD) are liquids at room temperatureE) react vigorously with water
a
16) Which of the following elements is a nonmetal A) nitrogenB) sodiumC) iron D) silverE) calcium
a
2) Pb is the symbol for ________. A) leadB) silverC) plumbium D) potassiumE) mercury
a
25) Identify the noble gas in the following list. A) heliumB) nitrogenC) oxygen D) goldE) chlorine
a
30) Which of the following descriptions of a subatomic particle is correct? A) A proton has a positive charge and a mass of approximately 1 amu.B) An electron has a negative charge and a mass of approximately 1 amu. C) A neutron has no charge and its mass is negligible. D) A proton has a positive charge and a negligible mass.E) A neutron has a positive charge and a mass of approximately 1 amu.
a
36) Consider a neutral atom with 30 protons and 34 neutrons. The atomic number of the element is ________.A) 30B) 32 C) 34D) 64E) 94
a
38) Consider a neutral atom with 30 protons and 34 neutrons. The number of electrons in this atom is ________.A) 30B) 32 C) 34D) 64E) 94
a
39) How many protons are in an isotope of sodium with a mass number of 25? A) 11B) 14C) 15 D) 25E) 32
a
43) The correct symbol for the isotope of potassium with 22 neutrons is ________. A) 41/19K B) 19/41K C) 37/15P D) 15/37P E) 22/19K
a
46) Which of the following is not true for the atoms 13N, 14N, and 15N? A) They all have the same mass number.B) They are isotopes.C) They all have the same atomic number. D) They all have 7 protons. E) They all have 7 electrons.
a
50) What is the electron arrangement for aluminum? A) 2,8,3B) 2,8,5C) 2,8,7 D) 2,8,8E) 2,8,10
a
57) Valence electrons are electrons located ________. A) in the outermost energy level of an atomB) in the nucleus of an atomC) in the innermost energy level of an atom D) throughout the atomE) in the first three shells of an atom
a
68) The metallic character of elements ________. A) decreases going across a periodB) decreases going down within a groupC) increases going across a period D) does not change going down within a group E) none of the above
a
11) What elements are in hydroxyapatite, OH, a major compound in human bones and teeth?A) carbon, potassium, oxygen, hydrogenB) calcium, phosphorous, oxygen, hydrogenC) carbon, phosphorous, oxygen, heliumD) calcium, phosphorous, oxygen, heliumE) carbon, potassium, oxygen, helium
b
21) The elements sodium, magnesium, and silicon ________. A) are isotopes of each otherB) are in the same period of elementsC) have the same number of neutrons D) are in the same groupE) have the same mass number
b
22) Which element would have physical and chemical properties similar to chlorine? A) ArB) BrC) S D) OE) P
b
29) According to the atomic theory, ________.A) all atoms are differentB) atoms are neither created nor destroyed during a chemical reactionC) atoms of the same element combine to form compoundsD) all matter is made up of tiny particles called electronsE) a compound can contain different numbers of atoms as long as it has the same kinds of atoms
b
30) Which of the following descriptions of a subatomic particle is correct? A) A proton has a positive charge and a mass of approximately 1 amu.B) An electron has a negative charge and a mass of approximately 1 amu. C) A neutron has no charge and its mass is negligible. D) A proton has a positive charge and a negligible mass.E) A neutron has a positive charge and a mass of approximately 1 amu.
b
34) The mass number of an atom can be calculated from ________. A) the number of electronsB) the number of protons plus neutronsC) the number of protons D) the number of electrons plus protons E) the number of neutrons
b
40) Consider an isotope of sodium with a mass number of 25. The number of neutrons in this isotope of sodium is ________.A) 11B) 14 C) 16D) 25E) 32
b
49) What is the element with the electron arrangement 2,8,7? A) BeB) ClC) F D) SE) Ar
b
5) Select the correct symbol for the element sodium. A) SoB) NaC) No D) SmE) Au
b
53) The number of electrons in the outer energy level of a neutral atom of boron (atomic number 5) is ________.A) 2B) 3 C) 5D) 8E) 10
b
58) In an electron-dot symbol of an element, the dots are used to represent ________. A) all of the electrons in the atomB) the valence electronsC) the electron arrangement D) only the electrons that will participate in bond formationE) the electrons that the element will gain when it forms a compound
b
63) The atomic size of atoms ________. A) increases going across a periodB) decreases going across a periodC) decreases going down within a group D) does not change going across a period E) none of the above
b
65) The ionization energy of atoms ________. A) decreases going across a periodB) decreases going down within a groupC) increases going down within a group D) does not change going down within a group E) none of the above
b
66) Ionization energy is ________.A) the energy an ion acquires from an electronB) the energy needed to remove the least tightly bound electronC) highest for metals in Group 1A (1)D) higher for potassium than for lithiumE) none of the above
b
1) The primary substances of which all other things are composed are ________. A) moleculesB) compoundsC) elements D) electronsE) protons
c
12) Which of the following is a characteristic of the modern periodic table? A) A group is a horizontal row on the periodic table.B) A period is a column on the periodic table.C) The elements in each group have similar chemical properties. D) The B groups contain the representative elements. E) The A groups contain the transition elements.
c
26) Semiconductors are located in the periodic table on (or in) the ________. A) left side of the tableB) right side of the tableC) line dividing metals from nonmetals in the table D) first period of the table E) last period of the table
c
4) Select the correct symbol for the element iron. A) IrB) FsC) Fe D) InE) FE
c
41) Which of the following gives the correct numbers of protons, neutrons, and electrons in a neutral atom of 118/50Sn? A) 118 protons, 50 neutrons, 118 electrons B) 118 protons, 118 neutrons, 50 electrons C) 50 protons, 68 neutrons, 50 electrons D) 68 protons, 68 neutrons, 50 electrons E) 50 protons, 50 neutrons, 50 electrons
c
47) The electron arrangement of any particular atom shows ________. A) the number of isotopes possibleB) a description of the shape of each electron energy levelC) the number of electrons in each energy level D) a diagram of an atomic nucleusE) the maximum number of electrons each energy level can hold
c
55) The number of electron energy levels in a magnesium atom is ________. A) 1B) 2C) 3 D) 4E) 5
c
56) The number of valence electrons found in an atom of a Group A element is equal to ________.A) its atomic numberB) its mass number C) its group numberD) eightE) eight minus the group number
c
59) How many valence electrons are in the electron-dot symbols for the elements in group 3A (13)?A) 1B) 2 C) 3D) 4E) 6
c
62) Which of the following is the correct electron-dot symbol for carbon? A)
c
64) The atomic size of atoms ________.A) increases going across a periodB) decreases going down within a groupC) increases going down within a groupD) does not change going down within a group E) none of the above
c
67) The metallic character of elements ________. A) increases going across a periodB) decreases going down within a groupC) increases going down within a group D) does not change going down within a group E) none of the above
c
8) Select the correct symbol for the element silver. A) SB) SiC) Ag D) AuE) AG
c
13) Which of the following properties is not a characteristic of the Group 1A (1) elements (alkali metals)?A) They are shiny.B) They are good conductors of heat. C) They react vigorously with water.D) Most of them are liquids at room temperature.E) They are good conductors of electricity.
d
15) Which of the following elements is a metal A) nitrogenB) fluorineC) argon D) strontiumE) phosphorus
d
18) Which of the following is a characteristic of nonmetals? A) shinyB) malleableC) good conductors of heat D) low melting pointsE) good conductors of electricity
d
19) Which of the following elements is a noble gas? A) oxygenB) chlorineC) bromine D) argonE) nitrogen
d
20) The elements lithium, sodium, and potassium ________. A) are isotopes of each otherB) are in the same period of elementsC) have the same number of neutrons D) are in the same groupE) have the same mass number
d
23) What is the symbol of the element in Group 4A (14) and Period 2? A) BeB) MgC) Ca D) CE) Si
d
24) The element in this list with chemical properties similar to magnesium is ________. A) sodiumB) boronC) carbon D) strontiumE) chlorine
d
42) Isotopes are atoms of the same element that have ________. A) different atomic numbersB) the same atomic numbers but different numbers of protons C) the same atomic numbers but different numbers of electrons D) the same atomic number but different numbers of neutrons E) the same atomic mass but different numbers of protons
d
44) The atomic mass of an element is equal to ________. A) its mass numberB) its atomic numberC) one-twelfth of the mass of a carbon-12 atom D) the mass of an "average atom" E) the mass of the heaviest isotope
d
45) A sample of chlorine has two naturally occurring isotopes. The isotope Cl-35 makes up 75.8% of the sample, and the isotope Cl-37 makes up 24.3% of the sample. Which of the following statements is true?A) The atomic mass of chlorine will be less than 35. B) The atomic mass of chlorine will be more than 37. C) You cannot tell what the atomic mass will be.D) The atomic mass will be between 35 and 37.E) The atomic mass will be 24.3.
d
48) The maximum number of electrons that may occupy the third electron energy level is ________.A) 2B) 8 C) 10D) 18E) 32
d
51) What is the electron arrangement for potassium (atomic number 19)? A) 2,8,9B) 2,8,7,2C) 2,10,7 D) 2,8,8,1E) 2,8,6,3
d
54) What is the correct electron arrangement for the lithium atom? A) 3B) 3,1C) 1,2 D) 2,1E) 2,5
d
6) Select the correct symbol for the element mercury. A) MrB) NaC) Au D) HgE) Ag
d
61) The number of dots in the electron dot symbol of carbon is ________. A) oneB) twoC) three D) fourE) five
d
7) Select the correct symbol for the element potassium. A) PB) PoC) Pt D) KE) Ko
d
9) Select the correct symbol for the element gold. A) GoB) HgC) Ag D) AuE) AU
d
17) Which of the following elements metalliod A) nitrogenB) lithiumC) iron D) goldE) silicon
e
27) Identify the metalloid in the following list. A) sulfurB) fluorineC) silver D) copperE) germanium
e
32) The atomic number of an atom is equal to the number of ________. A) nucleiB) neutronsC) neutrons plus protons D) electrons plus protons E) protons
e
52) What element has the electron arrangement 2,8,4? A) carbonB) oxygenC) sulfur D) ironE) silicon
e
60) The number of dots in the electron dot symbol of nitrogen is ________. A) oneB) twoC) three D) fourE) five
e
4.3 True/False Questions 11) The proton is 2000 times the mass of the neutron.
false
4.3 True/False Questions 13) The mass number is equal to the number of electrons.
false
4.3 True/False Questions 14) The atomic number of sodium is 23.
false
4.3 True/False Questions 15) A sodium atom with a mass number of 23 has 23 neutrons.
false
4.3 True/False Questions 2) The symbol for potassium is P.
false
4.3 True/False Questions 3) The symbol for mercury is Mg.
false
4.3 True/False Questions 4) The symbol for sodium is So.
false
4.3 True/False Questions 9) Iodine is a metal.
false
3) The symbol for mercury is ________.
hg
2) The symbol for lead is ________.
pb
4.3 True/False Questions 10) The proton has a positive charge.
true
4.3 True/False Questions 12) The atomic number is equal to the number of protons.
true
4.3 True/False Questions 16) A lead atom with a mass number of 208 has 126 neutrons.
true
4.3 True/False Questions 17) A copper atom with 30 neutrons has a mass number of 59.
true
4.3 True/False Questions 18) A calcium atom two electrons in the fourth energy level.
true
4.3 True/False Questions 5) Chromium is a metal.
true
4.3 True/False Questions 7) Mercury is a metal.
true
4.3 True/False Questions 8) Sulfur is a nonmetal.
true
