(A) bonding pair (D) homogeneous mixture 1. Two or more different elements chemically combined make a(n) (C) compound (E) heterogeneous mixture (B) isotope 2. The formula of a compound (A) must be electrically neutral (B) is written as a combination of elemental symbols (C) may contain subscripts specifying the number of each kind of atom (D) reveals whether the compound is ionic or covalent (E) all of these 3. A reaction in which a fuel burns in the presence of oxygen to form carbon dioxide and water vapor is the specific type of reaction called a (A) redox reaction. (B) combustion (C) acid-base (D) single replacement (E) precipitation 4. A certain covalent molecule, of general formula AT,, follows the Octet Rule. What can we reasonably conclude about its geometry? (A) the geometry is bent with a bond angle of either 120°or 180° (B) the molecule must be tetrahedral since there is only one possibility for this formula (C) the geometry is octahedral if the central atom A has one lone pair
(A) bonding pair (D) homogeneous mixture 1. Two or more different elements chemically combined make a(n) (C) compound (E) heterogeneous mixture (B) isotope 2. The formula of a compound (A) must be electrically neutral (B) is written as a combination of elemental symbols (C) may contain subscripts specifying the number of each kind of atom (D) reveals whether the compound is ionic or covalent (E) all of these 3. A reaction in which a fuel burns in the presence of oxygen to form carbon dioxide and water vapor is the specific type of reaction called a (A) redox reaction. (B) combustion (C) acid-base (D) single replacement (E) precipitation 4. A certain covalent molecule, of general formula AT,, follows the Octet Rule. What can we reasonably conclude about its geometry? (A) the geometry is bent with a bond angle of either 120°or 180° (B) the molecule must be tetrahedral since there is only one possibility for this formula (C) the geometry is octahedral if the central atom A has one lone pair
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:1. Two or more diffferent elements chemically combined make a(n)
(C) compound
(E) heterogeneous mixture
(A) bonding pair
(D) homogeneous mixture
(B) isotope
2. The formula of a compound
(A) must be electrically neutral
(B) is written as a combination of elemental symbols
(C) may contain subscripts specifying the number of each kind of atom
(D) reveals whether the compound is ionic or covalent
(E) all of these
3. A reaction in which a fuel burns in the presence of oxygen to form carbon dioxide and water
vapor is the specific type of reaction called a
(A) redox
reaction.
(B) combustion
(C) acid-base
(D) single replacement (E) precipitation
4. A certain covalent molecule, of general formula AT,, follows the Octet Rule. What can we
reasonably conclude about its geometry?
(A) the geometry is bent with a bond angle of either 120°or 180°
(B) the molecule must be tetrahedral since there is only one possibility for this formula
(C) the geometry is octahedral if the central atom A has one lone pair
(D) the predicted geometry is trigonal planar if there are no lone pairs on the central atom A
(E) all the T-A-T bond angles are 120° if the central atom A has one lone pair
5. Given the following unbalanced equation, what would be the coefficient of LiF after the
equation is balanced using the smallest set of whole numbers?
BF, +
Li,SO,
+ _B,(SO,), +
LiF
-
-
(A) 2
(B) 3
(C) 6
(D) 9
(E) 1
.6. What is the idealized bond angle for the tetrahedral geometry?
(C) 60°
(A) 109.5°
(B) 90°
(D) 180°
(E) 120°
7. Given the following balanced equation, how many moles of Al are required to produce
2.50 mol of H,?
6 N2OH + 2 AI
3 H, + 2 Na,AIo,
(A) 7.50 mol Al
(B) 3.75 mol Al
(C) 1.83 mol Al
(D) 1.67 mol Al
(E) 3.00 mol Al
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