Choose every description below that always is true of a substance.O composition and properties are uniformly distributed.O cannot be represented by a chemical formulaO can be separated into components by physical meansO obeys the Law of Definite CompositionO contains only one type of atomO contains only one type of moleculeO has variable compositioncan exist in any of the three states of matterNone of the above is true of every sub stance.

Substances are the pure and single form of matter. They have specific properties and composition.…

Answered: Choose every description below that…

General, Organic, and Biological Chemistry

7th Edition

ISBN:9781285853918

Author:H. Stephen Stoker

Publisher:H. Stephen Stoker

Chapter1: Basic Concepts About Matter

Section: Chapter Questions

Problem 1.23EP: Classify each of the following statements as true or false. a. All heterogeneous mixtures must...

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Similar questions

Which of the following is not characteristic of a pure substance? (a) Has a uniform composition throughout (b) Has a fixed melting temperature (c) Can be separated into two other pure substances
A material is believed to be a compound. Suppose you have several samples of this material obtained from various places around the world. Comment on what you would expect to find upon observing the melting point and color for each sample. What would you expect to find upon determining the elemental composition for each sample?
The composition of a given pure compound is always no matter what the source of the compound.
What is the chief factor that determines thephysical slateof a sample of matter?
In the left box, draw a particulate-level illustration of a substance in the gaseous state. Model the particles as spheres, which can be simple circles. Assume that the box represents a tiny, closed container that holds the particles. In the right box, draw a particulate-level illustration of the same substance after it cools and becomes a liquid
Write chemical formulas for the substances represented by the following models.
Classify the substances represented by the following models as homoatomic or heteroatomic molecules.
Sketch a magnified view (showing atoms/molecules) of each of the following and explain: a. a heterogeneous mixture of two different compounds b. a homogeneous mixture of an element and a compound
a Which of the following substances would you expect to be elements and which would you expect to be compounds? 1 calcium carbonate; 2 arsenic; 3 uranium; 4 potassium chloride; 5 chloromethane. b On what general rule do you base your answers to part a? Can you name any exceptions to this general rule?
Classify each of the following statements as true or false. a. All heterogeneous mixtures must contain three or more substances. b. Pure substances cannot have a variable composition. c. Substances maintain their identity in a heterogeneous mixture but not in a homogeneous mixture. d. Pure substances are seldom encountered in the everyday world.
Questions 47 and 48: Samples of matter may be classified in several ways, including gas, liquid, or solid G, L, S; pure substance or mixture P, M; homogenous or heterogeneous Hom, Het; and, for pure substances, element or compound E, C. For each substance in the left column of the tables shown, place in the other columns the symbol from the top of the column that best describes the substance in its most common state at room temperature and pressure. Assume that the material is clean and uncontaminated. The first box is filled in as an example. G, L, S P, M Hom, Het E, C Factory smokestack emissions All, but mostly G Concrete in a sidewalk Helium Hummingbird feeder solution Table salt
Questions 47 and 48: Samples of matter may be classified in several ways, including gas, liquid, or solid G, L, S; pure substance or mixture P, M; homogenous or heterogeneous Hom, Het; and, for pure substances, element or compound E, C. For each substance in the left column of the tables shown, place in the other columns the symbol from the top of the column that best describes the substance in its most common state at room temperature and pressure. Assume that the material is clean and uncontaminated. The first box is filled in as an example. G, L, S P, M Hom, Het E, C Limestone calcium carbonate Lead Freshly squeezed orange juice Oxygen Butter in the refrigerator

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