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Study Resources (Chemistry)

21) Methane can be decomposed into two simpler substances, hydrogen and carbon.  Therefore, methane A) is a gas. B) cannot be an element. C) must be a mixture. D) must have the formula CH. 22) The ability to recycle aluminum (or glass, or plastic) is ultimately an illustration of A) the law of the conservation of.
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31) Which radioactive particle was used by Geiger and Marsden in their experiments with thin metal foils? A) alpha, α B) beta, β C) gamma, γ D) lambda, λ 32) The nuclear model of the atom was constructed from which fundamental experiment? A) alpha particle scattering by thin metal foils B) cathode ray behavior in electrical fields C).
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81) The line spectra of atoms provides experimental evidence for A) the organization of particles in the nucleus of atoms. B) the number of protons. C) the arrangement of electrons. D) all of the above 82) In attempting to explain the line spectrum of hydrogen, Bohr suggested that the energy of electrons in atoms is.
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11) Chemistry affects every aspect of our daily lives. 12) Chemistry is important not only as a separate science but also because it is fundamental to other sciences. 13) A person engages in basic research to discover knowledge for the sake of knowing, while a person engages in applied research usually directs.
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11) Millikan's "oil drop" apparatus allowed for the determination of which property of the electron? A) mass B) charge C) ratio of mass to charge D) speed 12) When combined with Thomson's determination of the mass to charge ratio of the electron, Millikan's experimental work allowed for the determination of the A) charge on the electron. B).
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51) Which atom is least likely to form an ion? A) chlorine B) sodium C) carbon D) oxygen 52) Which atom is least likely to form an ion? A) bromine, Br B) phosphorus, P C) aluminum, Al D) carbon, C 53) Calcium reacts with chlorine to form A) CaCl. B) CaCl2. C) Ca2Cl. D) Ca2Cl3. 54) Magnesium reacts with oxygen to form A) MgO. B) Mg2O. C) MgO2. D).
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21) With respect to chemical bonding, which particles play the most active role? A) protons B) neutrons C) valence electrons D) core electrons 22) An electron-dot structure is a convenient method of representing A) valence electrons of an atom. B) core electrons of an atom. C) all electrons of the atom. D) the complete electron configuration of the atom. 23).
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3.3   Short Answer Questions 1) Scientists studying cathode rays determined that the rays must be negatively charged because the beam moved from the ________ electrode to the ________ electrode. 2) How many neutrons are in this isotope of chlorine? Cl 3) How many protons are in this isotope of uranium? U 4) Calcium has ________ valence.
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91) The prefix micro means ________. A) 10-9 B) 10-6 C) 10-3 D) 103 92) The prefix micro means ________. A) 0.000001 B) 0.001 C) 100 D) 1000 93) The prefix kilo means ________. A) 0.000001 B) 0.001 C) 100 D) 1000 94) The prefix mega means ________. A) 10-6 B) 10-3 C) 103 D) 106 95) The symbol for the prefix micro is ________. A) M B) m C) mm D) μ 96) The.
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2.2   True/False Questions 1) Leucippus and Democritus based their ideas about atoms on careful experimental results. 2) Aristotle's idea that matter is continuous is still considered to be correct. 3) Democritus thought that real substances were mixtures of various types of atoms. 4) During a chemical reaction, matter can neither be created nor destroyed. 5).
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  4.1   Multiple Choice Questions 1) The nature of bonding forces in a piece of matter influences which observable property of the matter? A) chemical reactivity B) state of the matter at room temperature C) strength and rigidity D) all of the above 2) The noble gases are inert.  This means they A) undergo very few chemical reactions. B).
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  2.1   Multiple Choice Questions 1) The Greek word atomos means A) atom. B) uncuttable. C) invisible. D) continuous. 2) Leucippus and Democritus proposed the "first" atomic view of matter.  They arrived at this view based on A) many experiments. B) careful measurements. C) philosophical and intuitive speculation. D) All of the above contributed to their atomic view. 3) The ancient Greeks.
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21) Which of the following types of electromagnetic radiation has the highest energy? A) gamma rays B) infrared rays C) radio waves D) ultraviolet rays 22) Which of the following types of electromagnetic radiation has the lowest energy? A) gamma rays B) infrared rays C) radio waves D) ultraviolet rays 23) Which of the following types of electromagnetic radiation is.
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81) What is the name of the compound with the formula CCl4? A) carbon chloride B) carbon(IV) chloride C) chlorine carbonide D) carbon tetrachloride 82) What is the name of the compound with the formula SO3? A) sulfur(VI) oxide B) sulfur oxide(III) C) sulfur trioxide D) sulfur(I) oxide(III) 83) The compound dinitrogen trioxide would have the chemical formula A) NO3. B) N3O2. C).
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71) The formula for the compound magnesium fluoride is A) MgF. B) Mg2F. C) MgF2. D) Mg3F2. 72) Which of the following is a binary compound? A) HCN B) N2 C) NaCl D) Na2SO4 73) How many electrons are there in a double bond? A) 1 B) 2 C) 4 D) 6 74) The name of the compound S2O3 is A) disulfur oxide. B) disulfur trioxide. C) sulfur.
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141) Which of the halogens is a solid at room temperature? A) fluorine B) chlorine C) bromine D) iodine 142) How does the periodic table substantiate atomic theory? A) Both are theoretical and cannot support each other. B) Groups in the periodic table have similar properties based on similar features of atomic structure, namely, the same number.
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61) The number of protons in an atom is called the A) atomic mass. B) atomic number. C) atomic weight. D) mass number. 62) Which is a correct description of the organization of subatomic particles in atoms? A) Protons and electrons are tightly packed into a small nucleus.  Neutrons occupy the space outside the nucleus. B) Protons.
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41) The mass of a nucleon is A) 1 gram. B) 1 atomic mass unit (u). C) equivalent to the mass of the electron. D) 0. 42) Which statement comparing chemical and nuclear properties of isotopes is correct? A) Isotopes have similar chemical and nuclear properties. B) Isotopes have different chemical and nuclear properties. C) Isotopes have different.
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1.3   Short Answer Questions 1) The "Aristotelian philosophy" is generally non-productive.  What does that mean? 2) The impact of antibiotics on infectious disease is a 20th century example of the ________ dream. 3) The negative impact of the overuse of pesticides on plant and animal life is an example of the ________ nightmare. 4).
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61) Octet means A) stable electrons. B) valence electrons. C) eight. D) filled shell. 62) The cation formed when a sodium atom loses an electron is called the A) sodide ion. B) sodate ion. C) sodium ion. D) soda ion. 63) The anion formed when oxygen gains two electrons is called the A) oxygen ion. B) oxyide ion. C) oxide ion. D) oxy ion. 64).
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  3.1   Multiple Choice Questions 1) Which statement best summarizes the general nature of investigations during the 1800s related to the acquisition and development of knowledge that provided glimpses into the atomic structure of matter? A) Qualitative observations, although often influenced by ideas related to magic and mysticism, provide glimpses of the structure.
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131) The structure of formaldehyde, CH2O, has A) all ionic bonds. B) all single covalent bonds. C) a double covalent bond between carbon and oxygen. D) a triple covalent bond between carbon and oxygen. 132) Acetylene is used in high temperature metal cutting torches.  The formula of acetylene is C2H2.  The structure of acetylene is A).
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111) Sodium hydroxide is commonly known as lye.  The formula of sodium hydroxide is A) NaOH. B) Na2OH. C) Na(OH)2. D) SOH. 112) Chalk is primarily composed of calcium carbonate.  The formula of calcium carbonate is A) CaCO3. B) Ca2CO3. C) Ca(CO3)2. D) Ca3(CO3)2. 113) The formula of iron(II) phosphate is A) FePO4. B) Fe2PO4. C) Fe2(PO4)3. D) Fe3(PO4)2. 114) What is the name of.
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111) A vertical column in the modern periodic table is called a A) period. B) group. C) branch. D) valence. 112) A horizontal row in the modern periodic table is called a A) period. B) group. C) branch. D) valence. 113) Elements in the same group have A) the same atomic number. B) the same number of neutrons. C) the same number of.
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3.2   True/False Questions 1) Anions migrate toward the cathode. 2) Cations migrate towards the cathode. 3) The positive particles had varying masses in Goldstein's experiments using a gas discharge tube with perforated cathodes. 4) Much of what we know about subatomic particles comes from directly observing the interior of the atom. 5) Radioactivity is the.
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51) John Dalton discovered which of the following laws? A) The Law of Conservation of Mass B) The Law of Definite Proportions C) The Law of Constant Composition D) The Law of Multiple Proportions 52) Atoms of the same element that have different masses are called A) allotropes. B) isomers. C) isotopes. D) molecules. 53) Which of the following postulates.
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11) According to Dalton's Atomic Theory, atoms of the same element may have different masses. 12) Mendeleev was the first person to attempt to arrange the elements in a systematic order. 13) Mendeleev arranged the elements in his periodic table solely in order of increasing atomic mass. 14) Dobereiner's Triads and Mendeleev's Periodic.
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11) When magnesium reacts with chlorine, magnesium ions, Mg2+, and chloride ions, Cl-, are formed.  In this reaction, chlorine atoms A) lose electrons. B) gain electrons. C) lose protons. D) gain protons. 12) When atoms lose or gain electrons in chemical reactions they form A) new atoms. B) noble gases. C) nucleons. D) ions. 13) Which molecule is NOT likely.
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2.3   Short Answer Questions 1) Antoine Lavoisier is often credited with doing more than anyone else to establish chemistry as a quantitative science.  What was the significance of Lavoisier's work? 2) When 10.0 g of lead are heated with 1.6 g of sulfur, 11.6 g of lead sulfide are formed.  How many.
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91) Which substance has polar covalent bonds? A) SO2 B) N2 C) Cl2 D) CaO 92) Which substance has polar covalent bonds? A) O2 B) NH3 C) Cl2 D) Ca2C 93) When two chlorine atoms combine with each other, the bond that forms is A) ionic. B) polar covalent. C) nonpolar covalent. D) ionic covalent. 94) The attraction of an atom for a pair of.
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51) Which contains 7 neutrons? A) C. B) N. C) B. D) Si. 52) Tritium is the common name for A) hydrogen-0. B) hydrogen-1. C) hydrogen-2. D) hydrogen-3. 53) Deuterium is the common name for A) hydrogen-0. B) hydrogen-1. C) hydrogen-2. D) hydrogen-3. 54) How many neutrons are there in the sulfur-31 isotope? A) 47 B) 31 C) 15 D) 16 55) How many nucleons are there in the sulfur-32.
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1.2   True/False Questions 1) Chemistry is the study of matter and the changes it undergoes. 2) There are some things you eat that are not chemicals. 3) Everything you wear is a chemical. 4) The technology of smelting metals into ores was performed long before the science of metallurgy evolved. 5) Green chemistry uses materials.
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131) Which element is classified as a metalloid? A) Li B) Si C) Cl D) Fe 132) A metalloid A) is the same as a metal. B) is located on the left side of the periodic table. C) has properties intermediate between metals and nonmetals. D) is all of the above 133) Elements in the same group generally have A).
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41) Nitrogen forms a number of different compounds with oxygen, depending upon the experimental conditions.  This type of observation concerning the behavior of matter is summarized by A) the law of conservation of mass. B) the law of definite proportions. C) the law of constant composition. D) the law of multiple proportions. 42) Which one.
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121) How many nitrogen atoms are in the formula for magnesium nitride? A) 1 B) 2 C) 3 D) 4 122) The formula of sodium chromate is A) NaCrO4. B) Na2Cr. C) Na2CrO4. D) Na3(CrO4)2. 123) Which of the following is a polyatomic ion? A) HCN B) Na+ C) N2 D) SO42- 124) The chemical formula for silver sulfate is A) AgSO4. B) Ag2SO4. C) Ag(SO4)2. D) Ag3SO4. 125) The.
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121) Which element is a halogen? A) Mg B) Hg C) Xe D) Br 122) Which element is a transition metal? A) Mg B) Hg C) Xe D) Br 123) Which element is a transition metal? A) Li B) Ca C) Fe D) Br 124) In which group do all atoms have seven valence electrons in the ground state? A) alkali metals B) alkaline earths C) halogens D) noble.
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11) The positive charges in an atom are spread uniformly throughout the entire atom. 12) Some positively charged alpha particles were deflected rather than passing straight through thin metal foil.  To explain this, Rutherford postulated that the nucleus of the atom must be positive. 13) Isotopes of an element have the same.
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21) Current methods of converting solar energy into electricity use inexpensive materials. 22) In the United States, the letter A identifies the main group elements and the letter B indicates the transition metal elements of the periodic table. 23) Beryllium has properties that are typical of the alkaline earth metals family. 24) Alkali.
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