Test - Chemical Bonding Flashcards
1
Q
Which of the following is a molecule
a. Mg3N2
b. H2O
c. NaF
A
b Nb pg22
2
Q
- Molecular compounds do not conduct electricity because they
A
Do not break up into ions Nb pg22
3
Q
- Which pair of atoms will combine with each other and form an ionic bonds
A
Ca and Br Nb pg23
4
Q
- Which of the following is the correct name for a compound between Phosphorus and Chlorine
A
Phosphorus trichloride Nb pg19
5
Q
- In the chemical formula for an ionic compound, which item is written
A
Positive ion Nb pg23
6
Q
- What is the chemical name for the compound with the formula name Na2S
A
Sodium sulfide Nb pg19
7
Q
- When an atom loses an electron, it becomes a
A
Positive ion Nb pg4
8
Q
- Which of the following is a similarity between ionic and covalent bonds
A
Bath make the elements more stable Nb pg23
9
Q
- Which of the following is a characteristic property of ionic compounds
A
They form hard, brittle crystals with characteristic shapes Nb pg23
10
Q
- Atoms become positive ions by
A
Losing electron Nb pg4
11
Q
- How does an atom of aluminum become an ion
A
It loses 3 electrons Nb pg9
12
Q
- Which is a property shared by most molecular compounds
A
Low melting point Nb pg23
13
Q
- Electrons involved in the formation of chemical bonds are called
A
Valence electrons Nb pg2
14
Q
- An ionic bond is the attraction between
A
Oppositely charged ions Nb pg3
15
Q
- Ions that are made of more than one atom are examples of
A
Polyatomic ions Nb pg3
16
Q
- Anions are formed by
A
Gaining electrons Nb pg3
17
Q
- What is a double bond
A
Two pairs of electrons shared between two atoms Nb pg3
18
Q
- Magnesium bromide is an ionic bond with the chemical formula MgBr2. What does the 2 tell you
A
There are two bromide ions for every one magnesium ion Nb pg17
19
Q
- The properties of a compound are _________ the properties of the elements that form it
A
Different from Nb pg11
20
Q
- When an atom gains an electron it becomes a positive ion
A
False, negative Nb pg3
21
Q
- The attraction between a positive ion and a negative ion results in a covalent bond
A
False, an ionic Nb pg3
22
Q
- When ions having a positive charge form bonds with ions having negative charge, the charge on the resulting compound is
A
zero Nb pg3
23
Q
- When an ionic compound forms, the total number of positive charges and the total number of negative charges must be
A
Equal Nb pg3
24
Q
- Chemical bonds form when valence electrons are ___________ between atoms
A
Transferred/ shared Nb pg4
25
49. Bonds that form between two nonmetals atoms usually are ________ bonds
Covalent Nb pg23
26
50. In a double covalent bond, _______ electrons are shared between two atoms
Four two pairs of Nb pg3
27
52. Fe(CO3)2
Iron (IV) Carbonate Nb pg19
28
58. Be3P2
Beryllium phosphide Nb pg19
29
59. Ammonium fluoride
(NH4)F Nb pg19
30
62. Manganese (III) oxide
Mn2O3 Nb pg19
31
63. Magnesium sulfate
Na2(SO4) Nb pg19
32
64. Lead (II) chloride
PbCL2 Nb pg19
33
66. Beryllium acetate
Be(C2H3O2)2 Nb pg19
34
68. What type of bond is formed between two Oxygen atoms? Explain specifically what will happen to form the bond.
Covalent 2 oxygen atoms form a double bond by sharing 4e- between them Nb pg3
35
70. What type of bond is formed between Sodium and Chlorine? Explain specifically what will happen to form the bond
Na gives its 1 valence e- to Cl — Na +1
Cl accepts 1 valence e- to go w/ the 7 it already has —- Cl - 1
Nb pg3
36
71. Why do noble gases rarely form compounds
Because they aren’t stable Nb pg2
