Concept explainers
Which of the following is the correct description of a cube of material cut from the inside of an apple?
(a) It is a pure compound.
(b) It consists of a homogenous mixture of compounds.
(c) It consists of a heterogeneous mixture of compounds.
(d) It consists of a heterogeneous mixture of elements and compounds.
(e) It consists of a single compound in different states.
Learn your wayIncludes step-by-step video
Chapter 1 Solutions
Chemistry: The Central Science, Books a la Carte Edition & Solutions to Red Exercises for Chemistry & Mastering Chemistry with Pearson eText -- Access Card Package
Additional Science Textbook Solutions
Campbell Biology: Concepts & Connections (9th Edition)
Genetic Analysis: An Integrated Approach (3rd Edition)
Campbell Biology (11th Edition)
Organic Chemistry (8th Edition)
Campbell Biology in Focus (2nd Edition)
Biology: Life on Earth (11th Edition)
- Which of the following are compounds, and which are elements? aNa2S bBr2 cPotassium hydroxide dFluorine eCompound or element fCompound or elementarrow_forwardSketch a magnified view (showing atoms and/or molecules) of each of the following, and explain why the specified type of mixture is a heterogeneous mixture of two different compounds. a homogeneous mixture of an element and a compound.arrow_forward1f a piece of hard, white blackboard chalk is heated strongly in a flame, the mass of the piece of chalk will decrease, and eventually the chalk will crumble into a white dust. Does this change suggest that the chalk is composed of an element or a compound?arrow_forward
- If we classify substances as ionic, molecular, macromolecular, or metallic, in which if any categories are all the members a. soluble in water? b. electrical conductors in the melt? c. insoluble in all common solvents? d. solids at room temperature?arrow_forwardWhat is the chief factor that determines thephysical slateof a sample of matter?arrow_forwardConsider two boxes with the following contents: the first box contains 10 blue paper clips and 10 red paper clips; the second contains the same number of each color of paper clip with the difference that each blue paper clip is interlocked with a red paper clip. Which box has contents that would be an analogy for a mixture, and which box has contents that would be an analogy for a compound?arrow_forward
- Classify the substances represented by the models in Problem 1-58 as to the number of atoms present per molecule, that is, as diatomic, triatomic, tetraatomic, etc.arrow_forwardConsider two boxes with the following contents: the first contains 30 bolts and 30 nuts that fit the bolts; the second contains the same number of nuts and bolts with the difference that each bolt has the nut screwed on it. Which box has contents that would be an analogy for a mixture, and which box has contents that would be an analogy for a compound?arrow_forwardFrom the information given, classify each of the pure substances A through D as elements or compounds, or indicate that no such classification is possible because of insufficient information. a. Substance A cannot be broken down into simpler substances by chemical means. b. Substance B cannot be broken down into simpler substances by physical means. c. Substance C readily dissolves in water. d. Substance D readily reacts with the element chlorine.arrow_forward
- All of the following processes involve a separation of either a mixture into substances or a compound into elements. For each, decide whether a physical process or a chemical reaction is required. a Sodium metal is obtained from the substance sodium chloride. b Iron filings are separated from sand by using a magnet. c Sugar crystals are separated from a sugar syrup by evaporation of water. d Fine crystals of silver chloride are separated from a suspension of the crystals in water. e Copper is produced when zinc metal is placed in a solution of copper(II) sulfate, a compound.arrow_forwardMusical instruments like trumpets and trombones are madefrom an alloy called brass. Brass is composed of copper andzinc atoms and appears homogeneous under an optical microscope.The approximate composition of most brass objectsis a 2:1 ratio of copper to zinc atoms, but the exact ratio variessomewhat from one piece of brass to another. (a) Would you classify brass as an element, a compound, a homogeneousmixture, or a heterogeneous mixture? (b) Would it be correctto say that brass is a solution?arrow_forward(a) Carbon and iron are both elements. What is an element?arrow_forward
- Introductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
- Introductory Chemistry: An Active Learning Approa...ChemistryISBN:9781305079250Author:Mark S. Cracolice, Ed PetersPublisher:Cengage LearningGeneral Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage LearningChemical Principles in the LaboratoryChemistryISBN:9781305264434Author:Emil Slowinski, Wayne C. Wolsey, Robert RossiPublisher:Brooks Cole