Bonding Test Review Game

Bonding Test Review Game

Pick A Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

Question 1 How is a cation formed? A) an atom loses a proton
B) an atom gains a proton C) an atom loses an electron D) an atom gains an electron

Question 1 No, that’s not right… Go back to question

Question 1 Answer C) an atom loses an electron
Protons are not gained or lost, only electrons. A positive charge results from losing electrons. Return

Question 2 The chemical name for Cr2O3 is: A) chromium oxide
B) chromium (III) oxide C) dichromium trioxide D) chromium (II) oxide

Question 2 Sorry, wrong answer… Go back to question

Question 2 Answer B) chromium (III) oxide A compound with a metal and a nonmetal is ionic, so no prefixes are used. The metal is a transition metal, so the charge must be shown using a roman numeral Return

Question 3 Which of the following is an ionic bond? A) F-F B) F-Cl
C) C-F D) Li-F

Question 3 Sorry, that’s not right…. Go back to question

Question 3 Answer D) Li-F
Lithium and Fluorine have a large electronegativity difference, so an electron is transferred rather than shared. Return

Question 4 What is the shape of a SCl2 molecule? A) Bent B) Linear
C) Tetrahedral D) Octahedral

Question 4 Answer A) Bent
The central atom has 2 bonded atoms and is in group 16. Return

Question 5 Which of the following is a covalent compound? A) LiBr
B) FeBr2 C) PBr3 D) CaBr2

Question 5 Answer C) PBr3 Since this molecule contains phosphorous and bromine, both atoms are on the right side of the periodic table. As a result, this is a covalent molecule. Return

Question 6 The figure above shows a compound containing hydrogen (H) and an unknown element Z. To which group on the periodic table does element Z belong? A)15 B)16 C)17 D)18

Question 6 Sorry, that’s not right…. Go back to question

Question 6 Answer A) 15 The element (Z) contains two unbonded electrons and three bonds. Three bonds are required to provide an octet for an atom with 5 valence electrons. Return

Question 7 In chemical compounds, ionic bonds form when:
A) the electronegativity difference between atoms is large B) the electronegativity difference between atoms is small C) atoms share electrons D) atoms share protons

Question 7 Answer A) the electronegativity difference between atoms is large Ionic bonds are formed by the transfer of electrons, not the sharing of electrons. Since ionic bonds form from elements on opposite sides of the periodic table, the electronegativity difference is large. Return

Question 8 Which of the following is NOT a naturally occurring polymer? A DNA B polyethylene C polysaccharides D proteins

Question 8 Answer B polyethylene
Polyethylene is manmade. The other choices occur naturally Return

Question 9 How many valence electrons does argon contain? A) 5 B) 6

Question 9 Answer D) 8 Argon is in group 18 on the periodic table, resulting in 8 valence electrons. Return

Question 10 What is the charge on zinc in the compound zinc (II) acetate? A) +2 B) +1 C) -1 D) -2

Question 10 Answer A) +2 All metals have a positive charge. The roman numeral IS the charge, +2 Return

Question 11 The correct name for P2O5 is: A) phosphorus (V) pentoxide
B) phosphorus oxide C) phosphorus (II) oxide D) diphosphorus pentoxide

Question 11 Answer D) diphosphorus pentoxide
P2O5 is a covalent compound since both elements are on the right side of the periodic table. Since the compound is covalent, prefixes are used in this name. Return

Question 12 A) a metallic bond B) a nonmetallic bond
C) a covalent bond D) an ionic bond

Question 12 Answer D) Ionic bond
In the periodic table shown, elements G and E are on opposite sides of the periodic table and have opposite charges. As a result, they form an ionic bond. Return

Question 13 The formula for lithium nitride is : A) LiN B) Li3N
C) Li3NO3 D) LiNO3

Question 13 Answer B) Li3N This is an ionic compound, so prefixes were not used. Li has a + 1 charge and N has a -3 charge. When the charges are crossed, the above formula results. Return

Question 14 The correct structural formula for C2H4 is: (click on picture)

Question 14 Answer G If you count the number of electrons on each atom, each carbon has 4 bonds = 8 electrons. Each hydrogen has 1 bond = 2 electrons. For this structure, all the atoms are satisfied. Return

Question 15 Which of the following is a polyatomic ion? A) phosphide
B) phosphate C) sulfide D) nitride

Question 15 Answer B) phosphate
Single atom anions end in –ide. Polyatomic ions typically end in –ate or –ite (the main exceptions being hydroxide and cyanide). Return

Question 16 Identify the compound that is formed by a covalent bond.
A) sodium chloride B) carbon disulfide C) copper (I) chloride D) magnesium chloride

Question 16 Answer B) Carbon disulfide
Carbon and disulfide are both on the right side of the periodic table, making the bond covalent. Each of the other choices contains one element on the left and one element on the right, making them ionic. In addition, it’s the only one with prefixes. Return

Question 17 Which of the following is nonpolar?

Question 17 Answer A – Notice the overall symmetry in the molecule
Return

Question 18 The type of bond found in CaS is: A) covalent B) nonpolar
C) ionic D) metallic

Question 18 Answer C) Ionic
Calcium and sulfur are on opposite sides of the periodic table and they have opposite charges, so they form an ionic bond. Return

Question 19 Which of the following is a polar compound? A) CO2 B) H2O
C) CH4 D) BH3

Question 19 Answer A) CO2 (linear – nonpolar) B) H2O (bent – polar)
C) CH4 (tetrahedral – nonpolar) D) BH3 (trigonal planar – nonpolar) Return

Question 20 The chemical bond that forms when atoms share electrons is called: A) ionic B) orbital C) Lewis D) covalent

Question 20 Answer D) covalent
Covalent bonds share electrons. Repeat the last sentence until you know it. Return

Question 21 Which of the following are the least reactive organic compounds? A unsaturated compounds B alkanes C alkenes D alkynes

Question 21 Answer B alkanes
Alkanes have only single C-H bonds, which are less reactive than double or triple bonds Return

Question 22 What is the shape of SiF4? A) tetrahedral B) linear
C) trigonal planar D) trigonal pyramidal

Question 22 Answer A) tetrahedral
Silicon is surrounded by four atoms, so the shape is tetrahedral Return

Question 23 Organic chemistry is the study of compounds contains what element? A hydrogen B oxygen C carbon D nitrogen

Question 23 Answer C carbon
Organic chemistry is the study of carbon containing compounds Return

Question 24 The name of which compound will include prefixes? A) Fe2O3
B) Ca3(PO4)2 C) N2O3 D) Al2S3

Question 24 Answer C) N2O3 The above compound has two elements on the right side of the periodic table, so it is covalent. Covalent compounds are named using prefixes. Return

Question 25 Name the compound SiO2 A) silver oxide B) silicon oxide
C) silver (IV) oxide D) silicon dioxide

Question 25 Answer D) silicon dioxide
Silicon dioxide is a covalent compound (both on the right of the P.T.), so prefixes are needed. No transition metals = no roman numerals. Return

Question 26

Question 26 Answer C Only single C-C bonds are present Return

Question 27 Why does chemical bonding occur?
A) Atoms bond to fill their outer energy level of electrons and become more stable B) Atoms bond to lose electrons and become more stable C) Atoms bond to fill their nucleus with protons and become more stable D) Atoms bond to gain neutrons are become more stable

Question 27 Answer A) Atoms bond to fill their outer energy level of electrons and become more stable Remember, atoms become happy (more stable) when they obey the octet rule, which states every main group elements wants 8 valence electrons, filling the outer energy level. Return

Question 28 What is the name of the compound TiO? A) titanium oxide
B) titanium monoxide C) titanium (II ) oxide D) titanium oxygen

Question 28 Answer C) titanium (II) oxide
Titanium is a transition metal, so its charge must be shown as a roman numeral. Since it is a metal, this is an ionic bond and prefixes are not used. Return

Question 29 In which of the following would you only find covalent bonds? A MgCO3 B CH4 C CaI2 D (NH4)2SO4

Question 29 Answer B CH4 The other compounds contain only ionic bonds (C) or ionically bound polyatomic ions (A and D) Return

Question 30 What is the charge on copper? A) +2 B) +1 C) o
D) Not enough information

Question 30 Answer D) not enough information
We need a roman numeral to tell which of the possible charges that copper possesses. We are not given this information. Return

Question 31 What is the formula for selenium dichloride? A) SCl2
B) S2Cl2 C) Se2Cl2 D) SeCl2

Question 31 Answer D) SeCl2
Selenium is Se on the periodic table. This is a covalent compound, so prefixes are used. Return

Question 32 The net charge on any compound is: A) +1 B) 0 C) -1
D) We need more information to answer this question.

Question 32 Answer B) 0 Atoms exchange or share electrons to satisfy the octet rule. If the octet rule is satisfied for all atoms, the total charge is zero. Return

Question 33 A phosphide ion has a -3 charge because:
A) The ion contains 15 protons and 12 electrons B) The ion contains 15 protons and 18 electrons C) The ion contains 12 protons and 15 electrons D) The ion contains 15 protons and 18 neutrons

Question 33 Answer B) The ion contains 15 protons and 18 electrons
The number of protons = number of electrons = atomic number (15) for a neutral atom. With a -3 charge, there are 3 additional electrons, giving us 18 electrons. Return

Question 34 Name the compound Zn3PO4 A) zinc phosphide
B) zinc (I) phosphate C) trizinc phosphate D) zinc (IV) phosphate

Question 34 Answer B) zinc (I) phosphate Phosphate has a -3 charge. If three zinc atoms are present, they must each have a +1 charge to make a neutral compound. Return

Question 35 Which of the following is a nonpolar covalent bond?
A) Ca-Br B) Cu-Br C) P-Br D) Br-Br

Question 35 Answer D) Br-Br
Both elements must be on the right side of the periodic table to be covalent. To be nonpolar covalent, the bond must be between two of the same nonmetal atom. Return

Question 36 Free Point 

Question 36 Free Point  Return

Question 37 What is the chemical name for the compound K2SO4?
A) Potassium selenide B) Potassium sulfide C) Potassium sulfate D) Potassium oxide

Question 37 Answer SO4 is a polyatomic ion. Anions will end in
C) Potassium sulfate SO4 is a polyatomic ion. Anions will end in -ide. Most polyatomic ions end in –ate. Return

Question 38 What shape does the molecule BF3 have? A) Bent
B) Trigonal pyramidal C) Tetrahedral D) Trigonal planar

Question 38 Answer D) Trigonal Planar
There are three atoms around the central atom. The central atom is boron, making it trigonal planar. Return

Question 39 Free Point 

Question 39 Free Point  Return

Question 40 An oxide ion (O-2) will contain the same number of electrons as a neutral atom of: A) carbon B) neon C) sulfur D) selenium

Question 40 Answer B) neon
A neutral oxygen has 8 total electrons. Gaining two electrons to fill its octet will give it 10 electrons, which is same as a neutral atom of neon. Return

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