Test 2 Flashcards
0
Q
Molecule shape
CO2
A
Linear
1
Q
The correct name for the compound N2O3 is
A
Dinitrogen trioxide
2
Q
Molecule shape
CCl4
A
Tetrahedral
3
Q
Molecule shape
H2S
A
Bent
4
Q
Fe2(SO4)3 is called
A
Iron 3 sulfate
5
Q
Which of the following elements has the lowest electro negativity? C Li N O F
A
Li
6
Q
The VESPR theory allows us to determine the …
A
Shape of a molecule
7
Q
In ionic compounds, … Lose their valence electrons to form positively charged …
A
Metals, cations
8
Q
Which of the following poly atomic ions have a positive charge? Hydrogen carbonate Cyanide Hydroxide Nitrate Ammonium
A
Ammonium
9
Q
Which one of the following elements forms two or more ions with different ionic charges? O Ca K Fe F
A
Fe
10
Q
Which of the following elements does not exist as a diatomic molecule? Nitrogen Hydrogen Carbon Chlorine Oxygen
A
Carbon
11
Q
Magnesium oxide has the following correct formula? MgO Mg2O2 Mg2O Mg2O4 MgO2
A
MgO
12
Q
According to the octet rule, sulfide ions have a charge of …
A
2-
13
Q
Charge for Cl
A
1-
14
Q
Charge for Ca
A
2+
15
Q
Charge for O
A
2-
16
Q
Charge for Al
A
3+
17
Q
An anion always…
A
Has a negative charge
18
Q
Chemical formula for magnesium sulfate
A
MgSO4
19
Q
Chemical formula for magnesium hydrogen sulfate
A
Mg(HSO4)2
20
Q
Chemical formula for magnesium sulfite
A
MgSO3
21
Q
Chemical formula for magnesium sulfide
A
MgS
22
Q
Which of the following compounds contains an ion with a 3+ charge? FeCl3 Na2O MgCl2 KCl CuCl
A
FeCl3
23
Q
An ionic compound…
A
Has a net charge of 0
24
How many valence electrons does carbon have
4
25
What is the formula of a compound that contains Na+ and PO43- ions?
Na3PO4
26
The shape of the ammonia (NH3) molecule is...
Trigonal pyramidal
27
How many electrons will aluminum gain or lose when it forms an ion?
Lose 3
28
```
A polar covalent bond is found in which of these compounds?
NaCl
H2
F2
H2O
N2
```
H2O
29
```
Which of the following substances contains a non polar bond?
H2O
N2
NH3
NaCl
MgF2
```
N2
30
Hydrogen bonds are a major factor in the structure of...
DNA
31
What Is the symbol for the ion with 19 protons and 18 electrons?
K+
32
Double and triple bonds form because...
Single covalent bonds do not give all of the atoms in the molecule eight valence electrons
33
The compound MgCl2 is named
Magnesium chloride
34
What is the correct name for ZnCl2
Zinc chloride
35
The correct name for SnCl2 is
Tin (2) chloride
36
What is the correct formula for the oxide ion?
O2-
37
```
Which of the following compounds contains an ionic bond?
H2O
CH4
CaO
H2
NH3
```
CaO
38
The ability of an atom to attract the shared electrons in a covalent bond is it's
Electro negativity
39
According to the IUPAC nomenclature system, the types of compound that use prefixes in their names are
Covalent compounds
