Deck 3: Compounds - Putting Particles Together

Question 1

How many electrons are in the highest energy level of sulfur?

A)2
B)4
C)6
D)8

Answer 1

6

Question 2

An atom of phosphorous has how many valence electrons?

A)4
B)5
C)6
D)8

Answer 2

5

Question 3

The element Silicon has how many electrons in each of its energy levels?

A)2, 8, 4
B)2, 6, 4
C)3, 5, 7
D)2, 8, 6

Answer 3

2, 8, 4

Question 4

Which of the following elements contains 6 valence electrons?

A)Si
B)P
C)S
D)Cl

Question 5

Which of the following elements has a filled valence shell?

A)Ne
B)P
C)Se
D)O

Question 6

How many electrons are in the second energy level for an atom of N?

A)5
B)6
C)4
D)8

Question 7

How many electrons can be contained in the first energy level?

A)2
B)8
C)10
D)18

Question 8

How many electrons can be contained in the second energy level?

A)2
B)8
C)10
D)18

Question 9

How many electrons can be contained in the third energy level?

A)2
B)8
C)10
D)18

Question 10

How many electrons are in the highest energy level of strontium?

A)2
B)4
C)6
D)8

Question 11

How many electrons are in the second energy level of phosphorous?

A)2
B)5
C)6
D)8

Question 12

An ion is:

A)an atom or a group of atoms that carries an electrical charge
B)another term for an atom
C)a molecule such as sucrose
D)a substance formed by the combination of two elements

Question 13

An ion with an atomic number of 34 and 36 electrons has a ________ charge.

A)-2
B)+34
C)-36
D)+2

Question 14

Which of the following is the sulfate ion?

A)CO₃^2-
B)SO₄^2-
C)PO₄^3-
D)S^2-

Question 15

Which of the following is the carbonate ion?

A)CO₃^2-
B)CO₂
C)CO₃
D)CO₃^-

Question 16

Which of the following is one of the main cations in the body that maintains solution concentrations inside and outside the cell?

A)Fe²⁺
B)Ba²⁺
C)K⁺
D)NH₄⁺

Question 17

Which of the following is the main anion in the body?

A)CO₃^2-
B)SO₄^2-
C)Cl^-
D)S^2-

Question 18

Which of the following ions is not isoelectronic with the noble gas neon?

A)O^2-
B)F^-
C)Al³⁺
D)S^2-

Question 19

Which of the following ions does not have 18 electrons?

A)Cl^-
B)Ca²⁺
C)P^3-
D)O^2-

Question 20

What combination of these atoms or ions have complete valence shells? He, I^-, Pb²⁺, Mg²⁺, H^-,Tl⁺

A)He, I^-, Mg²⁺,H^-
B)He, I^-, Pb²⁺, Mg²⁺
C)Pb²⁺, Mg²⁺, H^-, Tl⁺
D)He, Pb²⁺, H^-, Tl⁺

Question 21

Which combination contains atoms or ions with complete valence shells?

A)Ne, O^2-, Ca²⁺, Fe²⁺
B)F^-, Na⁺, Sn²⁺, Ar
C)P^3-, Mg²⁺, He, Sc³⁺
D)Kr, K⁺, Cu⁺, Al³⁺

Question 22

Which of the following is the symbol for the chlorite ion?

A)ClO₃^-
B)ClO₄^-
C)ClO^-
D)ClO₂^-

Question 23

Which of the following anions has the same charge as the hydroxide ion?

A)NO₃^-
B)SO₄^-2
C)CO₃^-2
D)PO₄^-3

Question 24

Which of the following anions has the same charge as the carbonate ion?

A)SO₄^-2
B)NO₃^-
C)OH^-
D)PO₄^-3

Question 25

Which of these polyatomic ions has a positive charge?

A)Ammonium
B)Hydroxide
C)Phosphate
D)Acetate

Question 26

How many protons and electrons are there in the iodide ion?

A)53 protons, 52 electrons
B)53 protons, 54 electrons
C)53 protons, 55 electrons
D)53 protons, 51 electrons

Question 27

How many protons and electrons are there in the sulfide ion?

A)16 protons, 17 electrons
B)16 protons, 16 electrons
C)16 protons, 18 electrons
D)16 protons, 15 electrons

Question 28

How many protons and electrons are there in the calcium ion?

A)20 protons, 20 electrons
B)20 protons, 22 electrons
C)20 protons, 18 electrons
D)20 protons, 19 electrons

Question 29

What is the name and symbol of an ion that has 26 protons and 23 electrons?

A)Fe⁺³
B)Fe⁺²
C)Mn⁺²
D)Mn⁺³

Question 30

Iron pyrite (fool's gold)is iron (II)sulfide. What is its formula?

A)FeS
B)FeSO₃
C)FeSO₄
D)Fe₂S₃

Question 31

What is the correct name for BaF₂?

A)Barium fluoride
B)Barium difluoride
C)Barium (II)fluoride
D)Barium fluorine

Question 32

The correct name for Cr₂O₃ is:

A)chromium (III)oxide
B)chromium (II)oxide
C)chromium oxide
D)dichromium trioxide

Question 33

The reaction of calcium and sulfur produces:

A)Ca₂S
B)CaS₂
C)CaS
D)Ca₂S₃

Question 34

The reaction of magnesium and nitrogen produces:

A)Mg₂N₃
B)Mg₃N₂
C)MgN
D)Mg₃N

Question 35

The reaction of aluminum and phosphorous produces:

A)AlP
B)Al₃P
C)AlP₃
D)Al₂P₃

Question 36

Which one of the compounds below is covalent?

A)LiF
B)_NaF
C)_HF
D)RbF

Question 37

Which one of these compounds is ionic?

A)NH₄Cl
B)HI
C)H₂CO₃
D)NH₃

Question 38

Which compound contains only covalent bonds?

A)NH₄OH
B)Ca₃(PO₄)₂
C)HC₂H₃O₂
D)NaCl

Question 39

The total number of valence electrons in a molecule of C₂H₂F₄ is:

A)28
B)32
C)38
D)48

Question 40

A double bond involves the sharing of ________ electron(s)between the atoms.

A)2
B)4
C)6
D)8

Question 41

What is the correct name for a molecule of SO₃?

A)Sulfur trioxide
B)Sulfur oxide
C)Sulfite
D)Monosulfur trioxide

Question 42

What is the correct name for Cl₂O₇?

A)Chloric acid
B)Chlorine oxide
C)Dichloride oxide
D)Dichlorine heptoxide

Question 43

Which one of the compounds below is most likely to be ionic?

A)GaAs
B)SrBr₂
C)NO₂
D)CBr₄

Question 44

What is the correct formula for dichlorine monoxide?

A)ClO
B)ClO₂
C)Cl₂O
D)Cl₂O₄

Question 45

How many single bonds does an atom of carbon normally make in a covalent molecule if there are no double or triple bonds?

A)1
B)2
C)3
D)4

Question 46

How many valence electrons would be found in the correct Lewis dot structure of C₂H₆?

A)10
B)14
C)20
D)28

Question 47

A thimble of water contains 4.0 × 10²¹ molecules. The number of moles of H₂O is:

A)2)4 × 10⁴⁵
B)6)6 × 10^-3
C)6)6 × 10^-23
D)2)4 × 10²³

Question 48

What is the mass of 3.61 moles of Ca?

A)0)090 g
B)145 g
C)40.0 g
D)150 g

Question 49

Which quantity contains the fewest moles?

A)10 g N₂
B)10 g CO
C)10 g Si
D)10 g AlH₃

Question 50

Which quantity contains the most moles?

A)10 g CH₄
B)10 g CO₂
C)10 g SiO₂
D)10 g SO₂

Question 51

The approximate bond angles between the atoms in a molecule with a trigonal planar electron pair geometry are:

A)90°
B)120°
C)180°
D)109.5°

Question 52

The approximate bond angles between the atoms in a molecule with a tetrahedral electron pair geometry are:

A)90°
B)120°
C)180°
D)109.5°

Question 53

What is the molecular geometry of a CO₂ molecule?

A)Trigonal planar
B)Tetrahedral
C)Linear
D)Bent

Question 54

What is the molecular geometry of a NH₃ molecule?

A)Tetrahedral
B)Trigonal planar
C)Bent
D)Trigonal pyramidal

Question 55

What is the molecular geometry of CH₂O?

A)Trigonal pyramidal
B)Linear
C)Tetrahedral
D)Trigonal planar

Question 56

Which of these molecules has trigonal pyramidal molecular geometry?

A)NF₃
B)BF₃
C)SO₃
D)AlF₃

Question 57

Given the electronegativities below, which of the following covalent single bonds is the most polar?
Element: H C N O
Electronegativity 2.1 2.5 3.0 3.5

A)C-H
B)N-C
C)O-N
D)O-C

Question 58

A bond where the electrons are shared unequally is called a(n):

A)polar covalent
B)coordinate covalent
C)purely (nonpolar)covalent
D)ionic

Question 59

Which of the following molecules is polar?

A)CH₄
B)CO₂
C)SO₂
D)SO₃

Question 60

Which of the following molecules is nonpolar?

A)NH₃
B)CH₃Cl
C)CCl₄
D)H₂O

Question 61

An ion containing 19 protons and 18 electrons is a cation.

Question 62

An ion containing 32 protons and 35 electrons has a triple positive charge.

Question 63

The charge on the nitrate ion is +1.

Question 64

The charge on the ammonium ion is +1.

Question 65

Metallic elements normally form covalent bonds with nonmetallic elements.

Question 66

Nonmetallic elements normally form covalent bonds with other nonmetallic elements.

Question 67

A triple covalent bond involves the sharing of six electrons.

Question 68

Hydrogen sulfide (H₂S)is a covalent compound.

Question 69

Phosphorous trioxide is the correct name for P₂O₃.

Question 70

Ammonium nitrate is an ionic compound.

Question 71

The molar mass of an element in grams is numerically equal to that element's atomic mass in amu.

Question 72

One mole of molecular oxygen weighs 16.0 grams.

Question 73

The molar mass of carbon is 6 g/mol.

Question 74

2 moles of CH₃CH₂CH₂CH₃ contains 5 moles of H₂ molecules.

Question 75

The angle between the bonds in a trigonal planar molecule is 120°.

Question 76

The angle between the bonds in a tetrahedral molecule is 90°.

Question 77

A nonpolar molecule results from an equal sharing of electrons between atoms in a bond.

Question 78

Nonmetallic elements have larger electronegativity values than metallic elements.

Question 79

Ozone, O₃, is polar because it only contains atoms of one element.

Question 80

The capacity of the n energy level is ________ electrons.