Question 1

Which of the following pairings of terms/concepts is correct?

Accepted Answer

A)  atom; limit of physical subdivision 
B)  molecule; limit of chemical subdivision 
C)  compound; homoatomic molecule 
D)  more than one correct response 
E)  no correct response 
A)  atom; limit of physical subdivision 
B)  molecule; limit of chemical subdivision 
C)  compound; homoatomic molecule 
D)  more than one correct response 
E)  no correct response

Question 2

Which of the following statements about heterogeneous and homogeneous mixtures is correct?

Accepted Answer

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. 
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.

Question 3

Which one of the following statements about heteroatomic molecules is correct?

Accepted Answer

A)  No 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. 
A)  No 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.

Question 4

In which of the following pairs of properties are both properties physical properties?

Accepted Answer

A)  melts at 73F1F1F1S1F1F1F10C, decomposes upon heating 
B)  good reflector of light, blue in color 
C)  has a high density, is very hard 
D)  more than one correct response 
E)  no correct response 
A)  melts at 73F1F1F1S1F1F1F10C, decomposes upon heating 
B)  good reflector of light, blue in color 
C)  has a high density, is very hard 
D)  more than one correct response 
E)  no correct response

Question 5

A substance will explode if exposed to light. The substance:

Accepted Answer

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)  could not be an element nor a compound 
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)  could not be an element nor a compound

Question 6

Which of the following statements concerning the chemical symbols for the elements is correct?

Accepted Answer

A)  All chemical symbols start with the first letter of the element's English name. 
B)  Most elements have two-letter chemical symbols. 
C)  Synthetic elements have one-letter symbols and naturally-occurring elements have two-letter symbols. 
D)  More than one correct response. 
E)  No correct response. 
A)  All chemical symbols start with the first letter of the element's English name. 
B)  Most elements have two-letter chemical symbols. 
C)  Synthetic elements have one-letter symbols and naturally-occurring elements have two-letter symbols. 
D)  More than one correct response. 
E)  No correct response.

Question 7

A substance decomposes upon heating. Choose the appropriate classification from the response list below:

Accepted Answer

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)  could not be an element nor a compound 
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)  could not be an element nor a compound

Question 8

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:

Accepted Answer

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. 
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.

Question 9

Give the classification of matter when two substances exist with three phases present.

Accepted Answer

A)  heterogeneous mixture 
B)  homogeneous mixture 
C)  compound 
D)  element 
A)  heterogeneous mixture 
B)  homogeneous mixture 
C)  compound 
D)  element

Question 10

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:
-Statements: (1) A molecule is a group of two or more atoms that functions as a unit because the atoms are bound together by chemical forces.
(2) The crushing of ice to make ice chips is a physical procedure that involves a chemical change.
(3) Most naturally occurring samples of matter are mixtures rather than pure substances.

Accepted Answer

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. 
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.

Which of the following pairings of terms/concepts is correct?

Which of the following statements about heterogeneous and homogeneous mixtures is correct?

Which one of the following statements about heteroatomic molecules is correct?

In which of the following pairs of properties are both properties physical properties?

A substance will explode if exposed to light. The substance:

Which of the following statements concerning the chemical symbols for the elements is correct?

A substance decomposes upon heating. Choose the appropriate classification from the response list below:

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:

Give the classification of matter when two substances exist with three phases present.

Measurements in Chemistry

Atomic Structure and the Periodic Table

Chemical Bonding: the Ionic Bond Model

Chemical Bonding: the Covalent Bond Model

Chemical Calculations: Formula Masses, Moles, and Chemical Equations

Gases, Liquids, and Solids

Solutions

Chemical Reactions

Acids, Bases, and Salts

Nuclear Chemistry

Saturated Hydrocarbons

Unsaturated Hydrocarbons

Alcohols, Phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids, Esters, and Other Acid Derivatives

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes and Vitamins

Nucleic Acids

Biochemical Energy Production

Carbohydrate Metabolism

Lipid Metabolism

Protein Metabolism

Filters

Exam 1: Basic Concepts About Matter

Which of the following pairings of terms/concepts is correct?

Which of the following statements about heterogeneous and homogeneous mixtures is correct?

Which one of the following statements about heteroatomic molecules is correct?

In which of the following pairs of properties are both properties physical properties?

A substance will explode if exposed to light. The substance:

Which of the following statements concerning the chemical symbols for the elements is correct?

A substance decomposes upon heating. Choose the appropriate classification from the response list below:

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:

Give the classification of matter when two substances exist with three phases present.

Measurements in Chemistry

Atomic Structure and the Periodic Table

Chemical Bonding: the Ionic Bond Model

Chemical Bonding: the Covalent Bond Model

Chemical Calculations: Formula Masses, Moles, and Chemical Equations

Gases, Liquids, and Solids

Solutions

Chemical Reactions

Acids, Bases, and Salts

Nuclear Chemistry

Saturated Hydrocarbons

Unsaturated Hydrocarbons

Alcohols, Phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids, Esters, and Other Acid Derivatives

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes and Vitamins

Nucleic Acids

Biochemical Energy Production

Carbohydrate Metabolism

Lipid Metabolism

Protein Metabolism

Filters