TEST BANK for General, Organic, and Biological Chemistry 7th Edition by Stephen Stoker. ISBN 9781305686182, ISBN 9781285853918_ TABLE OF CONTENTS_ PART I: GENERAL CHEMISTRY. 1. Basic Concepts About Matter. 2. Measurements in Chemistry. 3. Atomic Structure and the Periodic Table. 4. Chemical Bonding...
,Chapter 01: Basic Concepts About Matter.
Indicate the answer choice that best completes the statement or answers the question.
1. In which of the following pairs of properties are both properties chemical properties?
a. Freezes at 10°C and is nonflammable
b. Decomposes at 500°C and reacts with bromine
c. Poor conductor of heat and is reddish brown in color
d. Has a low density and is very hard
2. Which of the following statements concerning pure substances is correct?
a. Elements, but not compounds, are pure substances.
b. A pure substance can never be separated into simpler pure substances using chemical means.
c. Pure substances cannot have a variable composition.
d. More than one correct response
e. No correct response
3. Give the classification of matter when two substances exist with three phases present.
a. heterogeneous mixture b. homogeneous mixture
c. compound d. element
Use the following to answer the questions below:
In each of the following multiple-choice questions, characterize EACH of the three given statements as being TRUE or
FALSE and then indicate the collective true-false status of the statements using the choices.
a) All three statements are true.
b) Two of the three statements are true.
c) Only one of the statements is true.
d) None of the statements is true.
4. Statements:
(1) A basis for distinguishing between an element and a compound is whether the substance can be decomposed into other
substances using chemical means.
(2) Current chemical theory strongly suggests that all naturally occurring elements have been identified.
(3) The elements silver, gold, and aluminum all have chemical symbols that start with the letter A.
a. All three statements are true.
b. Two of the three statements are true.
c. Only one of the statements is true.
d. None of the statements is true.
5. A substance reacts vigorously with chlorine. Choose the appropriate classification from the response list below:
a. could be an element or a compound.
b. could be an element but not a compound.
c. could be a compound but not an element.
d. can neither be an element nor a compound.
6. A substance that cannot be separated into two or more substances using physical means
a. must be an element.
b. could be a compound.
Stoker 7th E Test Bank Page 1
, c. must be a pure substance.
d. more than one correct response
e. no correct response
7. Which one of the following statements about heteroatomic molecules is correct?
a. Two atoms in a heteroatomic molecule may be the same.
b. Upon chemical subdivision, heteroatomic molecules always yield two or more kinds of atoms.
c. Heteroatomic molecules maintain the properties of their constituent elements.
d. Molecules of certain elements are heteroatomic.
8. Which of the following is a correct description of a sample of ice cubes in water?
a. One phase present, one substance present
b. One phase present, two substances present
c. Two phases present, one substance present
d. Two phases present, two substances present
9. A pure substance F is found to change upon heating into two new pure substances M and Y. Both M and Y may be
decomposed by chemical means. From this we may conclude that:
a. F is an element, M and Y are compounds.
b. F is a compound, M and Y are elements.
c. F, M, and Y are all elements.
d. F, M, and Y are all compounds.
10. A substance has a variable composition. Choose the appropriate classification from the response list below:
a. could be an element or a compound.
b. could be an element but not a compound.
c. could be a compound but not an element.
d. can neither be an element nor a compound.
11. Which of the following statements about heterogeneous and homogeneous mixtures is correct?
a. It is possible to have heterogeneous mixtures in which all the components are liquids.
b. A homogeneous mixture contains visibly different parts, or phases.
c. All of the phases in a heterogeneous mixture must be in the same state.
d. No two phases in a heterogeneous mixture can be in the same state.
12. For the elements silicon, sulfur, and tin; choose the appropriate characterization of the set's chemical symbols from the
response list.
a. All symbols have one letter.
b. All symbols have two letters.
c. All symbols start with the same letter.
d. All symbols start with a letter not the first letter of the element's English name.
13. A substance will explode if exposed to light. The substance:
a. could be an element or a compound.
b. could be an element but not a compound.
Stoker 7th E Test Bank Page 2
, c. could be a compound but not an element.
d. can neither be an element nor a compound.
Use the following to answer the questions below:
In each of the following multiple-choice questions, characterize EACH of the three given statements as being TRUE or
FALSE and then indicate the collective true-false status of the statements using the choices.
a) All three statements are true.
b) Two of the three statements are true.
c) Only one of the statements is true.
d) None of the statements is true.
14. Statements:
(1) When the formula for a compound contains parentheses it is an indication that the compound is unstable and subject to
decomposition.
(2) The fact that an unknown substance reacts with chlorine is insufficient basis for classifying the unknown as a
compound.
(3) All chemical symbols use a two-letter notation to represent the name of an element.
a. All three statements are true.
b. Two of the three statements are true.
c. Only one of the statements is true.
d. None of the statements is true.
15. Give the classification of matter when two substances are present as a heteroatomic molecules.
a. heterogeneous mixture b. homogeneous mixture
c. compound d. element
16. Which of the following substances is both homoatomic and tetraatomic?
a. HCN b. H2O2
c. P4 d. H2CO3
17. In which of the following sequences of elements do all members of the sequence have chemical symbols starting with
the same letter?
a. Sulfur, silicon, sodium
b. Gold, silver, aluminum
c. Potassium, phosphorus, lead
d. More than one correct response
e. No correct response
18. For the elements calcium, iron, and beryllium; choose the appropriate characterization of the set's chemical symbols
from the response list.
a. All symbols have one letter.
b. All symbols have two letters.
c. All symbols start with the same letter.
d. All symbols start with a letter not the first letter of the element's English name.
19. In which of the following pairs of chemical formulas do both members of the pair have the same number of atoms per
Stoker 7th E Test Bank Page 3
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