Answer: a. They are homogeneous.Explanation: What is an element?Elements are substances that can’t be split into simpler substances. What is compound?Compounds are elements that have combined together. Things That Elements and Compounds Have in Common
For examples of elements and compounds: brainly.ph/question/1568744 For examples of compounds and their elements, visit the link: brainly.ph/question/1737560 #LetsStudy Question Description Solutions for Which of the following statements is true for both elements and compounds?a)They are homogeneous.b)They are the simplest form of matter.c)They are commonly found free in nature.d)They can be broken down into simpler substances.Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9. Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free. Here you can find the meaning of Which of the following statements is true for both elements and compounds?a)They are homogeneous.b)They are the simplest form of matter.c)They are commonly found free in nature.d)They can be broken down into simpler substances.Correct answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Which of the following statements is true for both elements and compounds?a)They are homogeneous.b)They are the simplest form of matter.c)They are commonly found free in nature.d)They can be broken down into simpler substances.Correct answer is option 'D'. Can you explain this answer?, a detailed solution for Which of the following statements is true for both elements and compounds?a)They are homogeneous.b)They are the simplest form of matter.c)They are commonly found free in nature.d)They can be broken down into simpler substances.Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of Which of the following statements is true for both elements and compounds?a)They are homogeneous.b)They are the simplest form of matter.c)They are commonly found free in nature.d)They can be broken down into simpler substances.Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Which of the following statements is true for both elements and compounds?a)They are homogeneous.b)They are the simplest form of matter.c)They are commonly found free in nature.d)They can be broken down into simpler substances.Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 9 tests. The characterization "indefinite shape, definite volume" applies to a. a solid b. a liquid Which of the following is a characteristic of all types of matter? a. naturally occurring c. has mass Which of the following is classified as matter? a. heat energy c. chocolate milk Which of the following processes does not fall within the realm of chemistry? a. detonation of an explosive d. no correct response Which of the following is a characteristic of both liquids and gases? a. definite shape c. indefinite shape The characterization "completely fills its container" describes the a. solid state c. gaseous state Which of the following statements about various substances describes a physical a. Copper metal can be drawn into thin wires. a. Copper metal can be drawn into thin wires. Which of the following statement about various substances describes a chemical a. Silver metal will not dissolve in hydrochloric acid. a. Silver metal will not dissolve in hydrochloric acid. In which of the following pairs of properties are both physical properties? a. low density, #ammable d. no correct response The fashioning of a piece of wood into a round table leg involves a _______ The vigorous reaction of potassium metal with water to produce hydrogen gas is
a_______ Straightening a bent piece of iron with a hammer is an example of a __________ The ignition and burning of a match involve a _____________change. Chemical or Physical Physical Chemical Physical Chemical 1. Which of the following processes is not a physical change? a. crushing ice cubes to make ice chips d. no correct response Which of the following processes is an example of chemical change? a. grating a piece of cheese b. burning a piece of wood Which of the following is ALWAYS a characteristic of chemical change? a. heat is produced c. one or more new substances are produced Which of the following is a correct statement about mixtures? a. The composition of a homogeneous mixture cannot vary. c. All heterogeneous mixtures have a nonuniform appearance. The characterization "two substances present, two phases present" describes a a. heterogeneous mixture a. heterogeneous mixture A mixture of water, ice, and motor oil is a heterogeneous mixture that contains a. one phase c. three phases Variable properties within a mixture sample is a characteristic of a. heterogeneous mixtures, but not homogeneous mixtures a. heterogeneous mixtures, but not homogeneous mixture Which of the following statements about elements and compounds is a. Elements, but not compounds, are pure substances. c. Both elements and compounds are pure substances. A compound can be separated into its constituent elements by a. physical means b. chemical means The number of known elements is a. 90 b. 118 Which of the following is a correct characterization for a compound? a. has properties different than its constituent elements b. is a physical mixture of two or more elements Which of the following statements concerning the known elements is correct? a. All known elements are naturally occurring substances. c. Synthetic (laboratory-produced) elements that do not occur in nature exist. The most abundant element in
the universe as a whole and in the Earth's crust is, a. hydrogen and iron b. hydrogen and oxygen Which of the following statements concerning atom percent elemental abundances in a. One element accounts for over one-half of all atoms. d. no correct response The two most abundant elements in the Earth's crust are a. oxygen and hydrogen d. no correct response The
correct chemical symbol for the element beryllium, which contains the first two a. be b. Be The elements oxygen, hydrogen, carbon, and nitrogen have the chemical symbols a. O, H, Ca, Ni c. O, H, C, N Which of the following characterizations is not compatible with the term triatomic a. all atoms can be different c. two kinds of atoms must be present Which of the following types of molecules is an impossibility? a. triatomic molecule containing three elements c. homoatomic molecule containing two elements The molecules present in a compound must be a. heteroatomic a. heteroatomic Which of the
following structural terms is not compatible with the matter classification a. individual atoms d. no correct response For which of the following chemical formulas are there seven atoms present per a. H2SO4 a. H2SO4 Which of the following chemical formulas !ts the description "number of elements a. HClO2 d. no correct response Which of the following pairings of chemical formulas and "molecular descriptions" is a. HCN and triatomic c. CO2 and diatomic What is the numerical value for the subscript x in the chemical formula HxPO4 given a. one c. three Consider the chemical formulas
CoCl2 a. contain the same number of elements c. contain different numbers of atoms The total number of atoms present in a formula unit of Al2(SO4)3 is c. 17 What are the two general characteristics that all types of matter possess? ... Classify each of the following as matter or energy (nonmatter). A) Air ... What physical characteristic distinguishes a. liquids from solids ... Indicate whether each of the following substances does or does not take the shape of its container and also whether it has a definite volume. a. Copper wire ... Classify each of the following properties of the metal magnesium as a physical property or a chemical property.
a. Solid at room temperature ... Indicate whether each of the following statements describes a physical or a chemical property. a. Silver salts discolor the skin by reacting with skin protein. b. Hemoglobin molecules have a red color. c. Beryllium metal vapor is extremely toxic to humans. d. Aspirin tablets can be pulverized with a hammer. ... Classify each of the following observations about the behavior of a substance as a physical property or chemical property of the substance. a. does not react with oxygen at 50°C b. reacts explosively with oxygen at 425°C c. does not melt when heated to 100°C d. melts at temperatures that exceed 250°C ... Classify each of the following changes as physical or chemical. a. Crushing a dry leaf b. Hammering a metal into a thin sheet c. Burning your chemistry textbook d. Slicing a ham ... Classify each of the following changes as physical or chemical. a. A newspaper is shredded c. A container of unrefrigerated milk sours. d. Fingernails are trimmed. ... Correctly complete each of the following sentences by placing the word chemical or physical in the blank. a. The freezing over of a pond's surface is a ______ b. The crushing of ice to make ice chips is a ______ c. The destruction of a
newspaper by burning it is a d. Pulverizing a hard sugar cube using a mallet is a ... Classify each of the following as (1) a physical property, (2) a physical change, (3) a chemical property, or (4) a chemical change. a. the process of burning a piece of newspaper b. the fact that metallic copper reacts with chlorine gas c. the process of melting ice d. the fact that metallic gold is a solid at room ... 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. ... Assign each of the following descriptions of matter to one of the following categories: heterogeneous mixture, homogeneous mixture, or pure substance. a. Two substances present, two phases present b. Two substances present, one phase present c. One substance present, two phases present d. Three substances present, three phases present ... Classify each of the following as a heterogeneous mixture, homogeneous mixture, or a pure substance. Also indicate a. Water and dissolved salt b. Water and sand c. Water, ice, and oil d. Water, dissolved sugar, and undissolved sugar ...
From the information given, classify each of the pure substances A through D as elements or compounds, or indicate that no such classi!cation is possible because of a. Analysis with an elaborate instrument indicates that substance A contains two elements. b. Substance B decomposes upon heating. c. Heating substance C to 1000°C causes no change in it. d. Heating substance D to 500°C causes it to change from a solid to a liquid. ... From the information given in the following equations, classify each of the pure substances A through G as elements or compounds, or indicate that no such classification is possible because of insufficient information. a. A + B -> C b. D -> E + F + G ... Indicate whether each of the following statements is true or false. a. Both elements and compounds are pure substances. b. A compound results from the physical combination of two or more elements. c. In order for matter to be heterogeneous, at least two compounds must be present. d. Compounds, but not elements, can have a variable composition. ... Consider 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 ... Assign each of the following descriptions of matter to one of the following categories: element, compound, or mixture. a. One substance present, three elements present b. Two substances present, one phase present c. One substance present, one phase present, substance cannot be decomposed using chemical means d. Two elements present, composition is variable ... Indicate whether each of the following samples of matter is a heterogeneous mixture, a homogeneous mixture, a compound, or an element. a. a blue-colored, single-phase liquid that when boiled away (evaporated) leaves behind a solid residue b. a "cloudy" liquid that separates into two layers upon standing overnight c. a nonuniform, white crystalline substance, part of which dissolves in alcohol and part of which does not dissolve in alcohol d. a colorless gas that cannot be separated into simpler substances using physical means and that reacts with the metal magnesium to produce both a magnesium-oxygen compound and a magnesium-nitrogen ... Indicate whether each of the following characterizations of the elements copper and sulfur is true or false. a. A mixture containing copper and sulfur can have a variable composition. b. In a mixture of copper and sulfur, the two elements maintain their individual properties. c. In a compound containing copper and sulfur, physical methods can be used to separate the substances present. d. In a compound containing copper and sulfur, the two elements are chemically combined rather than physically combined. ... Indicate whether each of the following statements about elements is true or false. a. Elements that do not occur in nature have been produced in a laboratory setting. b. At present, 108 elements are known c. Current chemical theory suggests there are more naturally occurring elements yet to be discovered. d. More laboratory-produced elements exist than naturally occurring elements. ... Indicate whether each of the following statements about elemental abundances is true or false. a. Silicon is the second-most abundant element in Earth's crust. b. Hydrogen is the most abundant element in the universe but not in Earth's crust. c. Oxygen and hydrogen are the two most abundant elements in the universe. d. One element accounts for more than one-half of the atoms in Earth's crust. ... With the help of Figure 1-10, indicate whether the first listed element in each of the given pairs of elements is more abundant or less abundant in Earth's crust, in terms a. Silicon and aluminum b. Calcium and hydrogen c. Iron and oxygen d. Sodium and potassium ... Give the name of the element denoted by each of the following chemical symbols. ... Give the chemical symbol for each of the following elements. a. Aluminum ... Write the chemical symbol for each member of the following pairs of elements. a. Sodium and sulfur b. Magnesium and manganese c. Calcium and cadmium d. Arsenic and argon ... In which of the following sequences of elements do all the elements have two-letter symbols? a. Magnesium, nitrogen, phosphorus b. Bromine, iron, calcium ... Assign each of the following molecular descriptions for a pure substance to the categories (1) must be an element, a. Molecules are triatomic. b. Molecules contain only one kind of atom. c. Molecules are heteroatomic. d. Molecules are both homoatomic and diatomic question 63. ... What is true about both elements and compounds?Elements and compounds are both examples of pure substances. A substance that cannot be broken down into chemically simpler components is an element.
Which of the following is applicable to both elements and compounds?Elements and compounds are forms of matter. Elements and compounds are composed of atoms. Elements and compounds are purely homogeneous substances and they have a constant composition throughout. They are all pure substances.
Which of the following statements is true about this compound?The true statement about compounds is- c) Compound is homogeneous and has a fixed composition. A compound is made up of two or more different elements that are evenly distributed throughout the compound. In a compound, the different elements are chemically combined in a definite proportion of their mass.
Which of the following statements is not true about the compound?The incorrect statement is Compounds have a variable composition.
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Which of the following statements is true for both elements and compounds?
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