Concept explainers
Interpretation: The questions that are needed to be asked for the determination of a substance as atomic element, molecular element, molecular compound, or ionic compound are to be explained and the detailed set of instructions in classification of substance on the basis of own answer are to be written.
Concept Introduction: The pure substances are either elements or compounds. The elements are classified as atomic elements and molecular element and compounds are classified as ionic compounds or molecular compounds.
The elements having single atom as their basic units are known as atomic elements.
The elements that are bonded together with two atoms of that elements are known as molecular elements.
The compounds that are composed of two or more non-metals are known as molecular compounds.
The compounds that are composed of pairing of cations and anions are known as ionic compound.
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Introductory Chemistry (5th Edition) (Standalone Book)
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- Crime scene investigators keep a wide variety of compounds on hand to help with identifying unknown substances they find in the course of their duties. One such investigator, while reorganizing their shelves, has mixed up several small vials and is unsure about the identity of a certain powder. Elemental analysis of the compound reveals that it is 67.31 % carbon, 6.978% hydrogen, 4.617% nitrogen, and 21.10% oxygen by mass. Which of the compounds could the powder be? C17H19NO3C17H19NO3 = morphine, analgesic C17H21NO4C17H21NO4 = cocaine, illicit drug C7H5N3O6C7H5N3O6 = 2,4,6-trinitrotoluene (TNT), commonly used explosive C10H15NC10H15N = methamphetamine, stimulant C4H5N2OC4H5N2O = caffeine, stimulant C11H15NO2C11H15NO2 = 3,4-methylenedioxymethamphetamine (MDMA), illicit drug C21H23NO5C21H23NO5 = heroin, illicit drug C3H6NO3C3H6NO3 = hexamethylene triperoxide diamine (HMTD), commonly used explosivearrow_forwardDifferentiate between carbonate and carbonic acid?arrow_forwardLet’s say you were doing an experiment on two different chemicals in two different test tubes. One chemical is giving off oxygen gas or hydrogen gas the other is giving off carbon dioxide gas. What one test could you do in each test tube that would prove which is giving off the oxygen or hydrogen and which is giving off the carbon dioxide?arrow_forward
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