(a)
Interpretation:
Dirt has to be classified as a compound or an element.
Concept Introduction:
Pure substance: A single component that has a constant composition, irrespective of the
Example: Water, sugar etc.
A pure substance can be classified into an element and a compound.
Element: A pure substance, which cannot be broken down into smaller substances by a
Example: Hydrogen gas, Magnesium ribbon and copper wire etc.
Compound: A pure substance that is formed by combination of two or more elements by chemical process is called as a compound. Example: Sodium chloride is a compound because it is formed from elements sodium and chlorine.
(b)
Interpretation:
Salad dressing has to be classified as a compound or an element.
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
Tungsten has to be classified as a compound or an element.
Concept Introduction:
Refer to part (a).
(d)
Interpretation:
Dinitrogen monoxide has to be classified as a compound or an element.
Concept Introduction:
Refer to part (a).
(e)
Interpretation:
Brass has to be classified as a compound or an element.
Concept Introduction:
Refer to part (a).
(f)
Interpretation:
Egg has to be classified as a compound or an element.
Concept Introduction:
Refer to part (a).
Want to see the full answer?
Check out a sample textbook solutionChapter 3 Solutions
EBK FOUNDATIONS OF COLLEGE CHEMISTRY
- 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_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_forwardWhat is the chief factor that determines thephysical slateof a sample of matter?arrow_forward
- Sketch 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_forwardWhich of the following are pure substances? Explain. (a) Calcium chloride, used to melt ice on roads, consists of two elements, calcium and chlorine, in a fixed mass ratio. (b) Sulfur consists of sulfur atoms combined into octatomic molecules. (c) Baking powder, a leavening agent, contains 26% to 30% sodium hydrogen carbonate and 30% to 35% calcium dihydrogen phosphate by mass. (d) Cytosine, a component of DNA, consists of H, C, N, and O atoms bonded in a specific arrangement.arrow_forward(1. On the second floor of Kent Laboratory a chemistry student in 111B finds that 15.20 g of nitrogen will react with 17.37 g, 34.74 g, or 43.43 g of oxygen to form three different compounds: (a) Calculate the ratio of the mass of oxygen to the mass of nitrogen for each compound and (b) Explain briefly how the numbers in part (a) support the atomic theory.arrow_forward
- Classify each of the following as a compound, a homogeneous mixture, or a heterogeneous mixture: (a) distilled water; (b) gasoline; (c) beach sand; (d) wine; (e) air.arrow_forward11. Which of the following can be more completely broken down? a) Petrochemicals b) Metals c) Inorganic chemicals d) Saltsarrow_forwardDuring her presentation, Zahara was asked several questions from the audience and to provide the molecular formula for molecules that the audience had questions about. Help Zahara classify whether the following items are an element, a compound, a homogenous mixture, or a heterogenous mixture: Ammonia.arrow_forward
- 4. The table gives the melting points, the boiling points and the electrical properties of six substances A to F. melting point boiling point electrical conductivity electrical conductivity as a liquid substance 1°C °C as a solid -210 -196 does not conduct does not conduct B 777 1627 does not conduct good conductor 962 2212 good conductor good conductor D -94 63 does not conduct does not conduct 1410 2355 does not conduct does not conduct F 1064 2807 good conductor good conductor C.arrow_forwardSelect the best answer or answers from the choices given: Which of the following does not describe a mixture? (a) properties of its components are retained, (b) chemical bonds are formed, (c) components can be separated physically, (d) includes both heterogeneous and homogeneous examples.arrow_forwardAnalytical chemistry studies and uses instruments and methods used to separate, identify, and quantify matter. What analytical technique could one use to determine whether the creatine made in a laboratory experiment is in the form of the monohydrate or dihydrate or something in between?arrow_forward
- General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningIntroductory Chemistry: An Active Learning Approa...ChemistryISBN:9781305079250Author:Mark S. Cracolice, Ed PetersPublisher:Cengage LearningIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub CoChemical Principles in the LaboratoryChemistryISBN:9781305264434Author:Emil Slowinski, Wayne C. Wolsey, Robert RossiPublisher:Brooks Cole