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Study Resources (Chemistry)

Essay Questions 1) What is chemistry? 2) What are the important characteristics of the scientific method? 3) What is the difference between a scientific law and a scientific theory? 4) Charcoal was burned in a barbecue grill. The ashes that remained weighed considerably less than the charcoal that was burned. Does this mean that.
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Introductory Chemistry, 4e (Tro)   True/False Questions 1) Numbers are usually written so that the uncertainty is in the last reported digit. 2) The decimal number 0.0000010 expressed in scientific notation is 1.0  × 106. 3) The decimal number 0.0210 expressed in scientific notation is 2.10 × 10-2. 4) The mass of an object, 4.55 ×.
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21) The names of the elements whose symbols are Si, P, Mn, and S are respectively, A) silicon, potassium, magnesium, and sulfur. B) silver, phosphorus, magnesium, and sulfur. C) silicon, phosphorus, manganese, and sulfur. D) silicon, phosphorus, magnesium, and sulfur. E) silicon, potassium, magnesium, and sodium. 22) Metals are located where on the periodic table? A) left.
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11) Molecular elements do not exist in nature. 12) The element nitrogen normally exists in nature as a diatomic molecule. 13) Carbon dioxide is an example of a molecular compound. 14) The basic unit of an ionic compound is called the formula unit. 15) SO2 is an ionic compound. 16) Ionic compounds have a net.
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Introductory Chemistry, 4e (Tro)   True/False Questions 1) Matter is defined as anything that is visible to the human eye. 2) An amorphous solid has long range, repeating order. 3) Gases are the only form of matter that is compressible. 4) Liquids have definite volume and indefinite shape. 5) Solids have indefinite shape and volume. 6) In a.
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21) All of the following can be considered physical properties EXCEPT A) taste. B) color. C) flammability. D) density. E) boiling point. 22) Which of the following items is a physical property? A) the corrosive action of acid rain on granite B) the odor of spearmint gum C) the combustion of gasoline D) the tarnishing of a copper statue E) none.
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Introductory Chemistry, 4e (Tro) True/False Questions 1) The smell of the ocean is caused by atoms. 2) The atom is the fundamental building block of everything we hear, feel, see, and experience. 3) An atom is the smallest identifiable unit of a compound. 4) John Dalton was the first person recorded as thinking that matter.
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31) Which type of energy is associated with motion? A) chemical B) electrical C) potential D) kinetic E) none of the above 32) Which type of energy is associated with position? A) chemical B) electrical C) potential D) kinetic E) none of the above 33) What type of energy is associated with the burning of gasoline? A) kinetic B) potential C) electrical D) chemical E) none of.
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Multiple Choice Questions 1) Which of the following statements about atoms is FALSE? A) Atoms compose all matter. B) Atoms are responsible for the sensation of smell. C) Atoms are the basic building block of nature. D) An atom is the smallest identifiable unit of an element. E) All of the above statements are true. 2) Which.
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Algorithmic Questions 1) The exponential 104 is equal to which decimal number? A) 10,000 B) 1 C) 10 D) 100 E) none of the above 2) The decimal value 10 is equal to which exponential? A) 104 B) 103 C) 102 D) 101 E) none of the above 3) The decimal value 0.01 is equal to which exponential? A) 10-3 B) 10-2 C) 10-4 D) 10-5 E) none.
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Multiple Choice Questions 1) When elements combine to form compounds, A) their properties are an average of all elements in the compound. B) their properties change completely. C) their properties do not change. D) their properties are completely random. E) none of the above 2) The first chemist to formally state the law of constant composition.
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A) 10-3 B) 10-6 C) 10-9 D) 10-12 E) none of the above A) 10-15 B) 10-12 C) 1012 D) 109 E) none of the above A) 10-3 B) 10-6 C) 10-9 D) 10-12 E) none of the above A) 103 B) 10-6 C) 10-9 D) 106 E) none of the above 35) What is the standard SI unit for length? A) mile B) centimeter C) foot D) meter E) none of the above 36) What.
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41) The formula for potassium chlorate is KClO3. The formula for magnesium chloride is MgCl2. What is the formula for magnesium chlorate? A) MgClO3 B) Mg2ClO3 C) Mg(ClO3)2 D) Mg2(ClO3)3 E) none of the above 42) The charge of a vanadium ion in the compound V2O5 is: A) 5+ B) 2+ C) 10+ D) 10- E) none of the above 43) What.
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11) A theory is always true and can never be proven as wrong. 12) Theories can be tested and validated through experimentation. 13) If experimental results contradict a hypothesis, the hypothesis must be either revised or discarded. 14) The Greek philosophers used observation and experimentation to understand the world. 15) A scientific law is.
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51) What would the formula of diiodine pentasulfide be? A) I5S2 B) I2S5 C) I4S9 D) I2S7 E) none of the above 52) What is the correct formula for the molecular compound heptaphosphorus octafluoride? A) P5F8 B) P 7F6 C) P6F7 D) P7F8 E) none of the above 53) What is the proper name for HBr (aq)? A) hydrobromous acid B) hydrousbromic acid C) hydrobromic.
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Introductory Chemistry, 4e (Tro) True/False Questions 1) Chemicals make up everything around you, including your own body. 2) Chemists study the properties of substances and the particles that compose those substances. 3) When a sealed can of soda pop is opened, the carbon dioxide gas fizzes out because the pressure is released. 4) The properties.
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11) What is the definition of a scientific theory? A) a brief statement that summarizes past observations and predicts future ones B) a model that explains the underlying reasons for observations and laws C) the equivalent of a scientific opinion which others may disagree with D) a method of learning that emphasizes reason as.
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11) The number 4,450,000.0 has 3 significant figures. 12) The number 7.20 × 103 contains three significant figures. 13) When the temperature of an object is reported as 23.7°C, the actual temperature can be assumed to be between 23.6°C and 23.8°C. 14) Scientific numbers are reported so that every digit is certain except.
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21) All carbon atoms have exactly 6 protons. 22) The atomic number of nitrogen is 14.01. 23) Mendeleev is best remembered for his pioneering work on determining atomic structure. 24) Mendeleev's early periodic table predicted the existence of elements that had yet to be discovered. 25) In the modern periodic table, elements are listed.
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31) When a chemical "cold pack" is activated, the chemical reactants absorb heat from the surroundings. 32) The process of boiling water is an endothermic process. 33) A chemical change that will lower the potential energy of the chemical results in an endothermic reaction. 34) An energy diagram that shows the products having.
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11) Which of the following statements about the nature of electrical charge is FALSE? A) Electrical charge is a fundamental property of protons and electrons. B) Positive and negative electrical charges attract each other. C) Positive-positive or negative-negative charges repel each other. D) Positive and negative charges cancel each other so that a proton.
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Algorithmic Questions 1) How many Calories are in 575.0 calories? A) 575,000 B) 0.5750 C) 137.6 D) 2,404 E) none of the above 2) How many joules are in 55.2 calories? A) 13,200 B) 55,200 C) 13.2 D) 231 E) none of the above 3) What is the value of -25°C on the Kelvin scale? A) 248 B) -32 C) -13 D) -298 E) none of the above 4).
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Introductory Chemistry, 4e (Tro)   True/False Questions 1) When elements combine to form compounds, their properties only change slightly. 2) The properties of a compound are an average of the properties of the individual elements. 3) Life could not exist with just 91 elements if they did not combine to form compounds. 4) Although some substances.
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21) Fluorine is considered which of the following? A) atomic element B) molecular element C) molecular compound D) ionic compound E) none of the above 22) Ammonium fluoride is considered which of the following? A) atomic element B) molecular element C) molecular compound D) ionic compound E) none of the above 23) Which of the following species is a molecular element? A) neon B).
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Multiple Choice Questions 1) Which of the following statements about soda pop is FALSE? A) Soda pop is a chemical mixture of mostly sugar, water and carbon dioxide. B) The molecules important to fizzing are carbon dioxide and water. C) The carbon dioxide is forced to mix with the water by the presence of.
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11) Which of the following items is a mixture? A) water B) helium C) brass D) sugar E) none of the above 12) Which of the following is a heterogenous mixture? A) milk B) sugar water C) raisin bran D) air E) none of the above 13) Which of the following is a homogeneous mixture? A) trail mix B) stainless steel C) water D) molten iron E).
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11) Skim milk is a heterogeneous mixture. 12) Air is a pure substance. 13) Sugar is a pure substance. 14) Chemical properties of a substance are those that can be observed without changing the composition of a substance. 15) Flammability of gasoline is a chemical property. 16) The odor of gasoline is a chemical.
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21) The correct formula for calcium fluoride is CaF3. 22) Ionic compounds are usually made up of a metal and a nonmetal. 23) The ionic compound MgO is named manganese oxide. 24) The name of KNO3 is potassium nitratide. 25) The correct formula for sodium permanganate is NaMgO4. 26) Type II metal cations are usually.
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Multiple Choice Questions 1) Which of the following statements about matter is FALSE? A) Matter occupies space and has mass. B) Matter exists in either a solid, liquid or gas state. C) Matter is ultimately composed of atoms. D) Matter is smooth and continuous. E) none of the above 2) Which of the following is NOT an.
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41) In order, what is the freezing point, room temperature and boiling point of water according to the Fahrenheit scale? A) 32-75-212 B) 0-75-100 C) 0-25-100 D) 0-298-373 E) none of the above 42) In order, what is the freezing point, room temperature and boiling point of water according to the Celsius scale? A) 32-75-212 B) 0-75-100 C) 0-25-100 D).
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21) Antoine Lavoisier proposed the atomic theory. 22) John Dalton proposed the atomic theory. 23) The first step in acquiring scientific knowledge is often the observation or measurement of some aspect of nature. 24) If a hypothesis is falsifiable, it means that the hypothesis was once considered true but is now considered false. 25).
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