MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Transcription

1 Ch I T<?r Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) If matter is uniform throughout, cannot be separated into other substances by physical processes, 1) but can be decomposed into other substances by chemical processes, it is called a (an). A) element B) heterogeneous mixture C) mixture of elements D) homogeneous mixture E) compound 2) The symbol for the element potassium is. 2) A)K B)Pt C)Ca D)S E) P 3) The temperature of 25 C is in Kelvins. 3) A) 103 B)298 C)138 D) 166 E) 248 4) The freezing point of water at 1 arm pressure is. 4) A)0 C B)-32 F C)-273 C D) 0 K E) 0 F 5) 1 kilogram = milligrams 5) A) 1,000,000 B) 1,000 C)1xlO-6 D) 10,000 E) none of the above 6) The density (in g/cm^) of a gold nugget that has a volume of 1.68 cm^ and a mass of 32.4 g is 6) A) 54.4 B) C) 19.3 D) 32.4 E)

2 7) The correct result (indicating the proper number of significant figures) of the following addition is 7) A) 13 B) 13.3 C) D) E) none of the above 8) The number has significant figures. 8) A) 6 B)5 C)3 D)2 E) 4 9) The correct answer (reported to the proper number of significant figures) to the following is 9) 6.3 x 3.25 = A) 21 B)20. C) D) 20.5 E) ) The number has significant figures. 10) A) 3 B)4 C)6 D)2 E) 5 11) A certain liquid has a density of 2.67 g/crrr^ g of this liquid would occupy a volume of 11) L. A) 35.8 B) 1.99 x ID'3 C) 3.58 D) E) ) There are significant figures in the answer to the following computation: 12) ( ) (1.79 x 1Q5) 1.39 A)l B)2 C)3 D)4 E)5,ox ( ) ( ) U> ~ ' A) B) C) 1.1 x 1Q2 D) E)

3 14) "Absolute zero" refers to. 14) A) 0 Fahrenheit B) C + 9/5( F - 32) C) 0 Celsius D) 0 Kelvin E) C 15) A separation process that depends on differing abilities of substances to form gases is called 15) A) filtration B) all of the above are correct C) distillation D) chromatography E) solvation

4 Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) _ and _ reside in the atomic nucleus. 1) A) Protons, neutrons B) Protons, electrons C) Electrons, neutrons D) none of the above E) Neutrons, only neutrons 2) The atomic number indicates _. 2) A) the total number of neutrons and protons in a nucleus B) the number of neutrons in a nucleus C) the number of protons or electrons in a neutral atom D) the number of atoms in 1 g of an element E) the number of different isotopes of an element 3) The element _ is the most similar to strontium in chemical and physical properties. 3) A)Ba B)Li C) Cs D) At E) Rb 4) Potassium is a _ and chlorine is a _. 4) A) metal, metalloid B) nonmetal, metal C) metal, metal D) metal, nonmetal E) metalloid, nonmetal 5) Aluminum reacts with a certain nonmetallic element to form a compound with the general formula 5) A1X. Element X is a diatomic gas at room temperature. Element X must be. A) oxygen B) nitrogen C) chlorine D) fluorine E) sulfur 6) What is the formula of the compound formed between strontium ions and nitrogen ions? 6) A)Sr2N3 B) SrN2 C) SrjN2 D) SrN E)

5 7) The correct name for SrO is. 7) A) strontium monoxide B) strontium oxide C) strontium dioxide D) strontium hydroxide E) strontium peroxide 8) Predict the empirical formula of the ionic compound that forms from magnesium and oxygen. 8) A)Mg2O B)MgO2 C)Mg3O2 D) MgO E) Mg2O2 9) Predict the empirical formula of the ionic compound that forms from sodium and fluorine. 9) A)Na2F B)Na3F2 C) Na2F3 D) NaF2 E) NaF 10) The formula of a salt is XC12. The X-ion in this salt has 28 electrons. The metal X is. 10) A) Zn B) Fe C) Pd D) V E) Ni 11) Magnesium reacts with a certain element to form a compound with the general formula MgX. 11) What would the most likely formula be for the compound formed between potassium and element X? A)KX2 B)KX C)K2X D) K2X3 E) K2X2 12) The correct formula of iron(iii) bromide is 12) A) Fe3Br B) FeBr C) FeBr3 D) Fe3Br3 E) FeBr2 13) The correct name for HC1O3 is. A) chlorous acid B) hydrochloric acid C) hydrochlorous acid D) perchloric acid E) chloric acid 14) What is the molecular formula for propane 13) 14) A) C4H8 B) C4Hi0 Q C2H8 D) C3H8 E) C3H6

6 15) The name of the ionic compound 203 is _. 15) A) vanadium(ii) oxide B) divanadium trioxide C) vanadium oxide D) vanadium(iii) oxide E) vanadium(iii) trioxide 16) Chromium and chlorine form an ionic compound whose formula is CrCl3. The name of this 16) compound is _. A) chromium(iii) chloride B) chromium chlorine C) monochromium trichloride D) chromic trichloride E) chromium(iii) trichloride 17) The ions Ca^+ and PO43- form a salt with the formula _. 17) A) Ca2(P04)3 C) Ca(P04)2 D) CaPC>4 E) Ca3(P04)2 18) The correct formula for molybdenum(iv) hypochlorite is _. 18) A) Mo(ClO3)4 B) MoCl4 C) Mo(ClO2)4 D) Mo(ClO4)4 E) Mo(ClO)4 19) The correct name for HC1C>2 is _. 19) A) chloric acid B) hypychloric acid C) perchloric acid D) chlorous acid E) hypochlorous acid

7 20) _ typically form ions with a 2+ charge. 20) A) Halogens B) Chalcogens C) Transition metals D) Alkali metals E) Alkaline earth metals 21) The correct name for H2SO3 is _. 21) A) sulfurous acid B) sulfur hydroxide C) hydrosulfic acid D) hydrosulfuric acid E) sulfuric acid 22) The correct name for H2CO3 is _. 22) A) carbonous acid B) carbohydric acid C) carbohydrate D) hydrocarbonate E) carbonic acid 23) The correct name for CaH2 is _. 23) A) calcium dihydroxide B) calcium hydride C) calcium dihydride D) hydrocalcium E) calcium hydroxide 24) The empirical formula of a compound with molecules containing 12 carbon atoms, 14 hydrogen 24) atoms, and 6 oxygen atoms is _. A) C6H703 B) CH2O D) C12Hi406 E)CHO

8 25) When a metal and a nonmetal react, the tends to lose electrons and the 25) tends to gain electrons. A) nonmetal, nonmetal B) metal, metal C) nonmetal, metal D) metal, nonmetal E) None of the above, these elements share electrons. 26) are found uncombined, as monatomic species in nature. 26) A) Alkaline earth metals B) Halogens C) Noble gases D) Chalcogens E) Alkali metals 27) Elements in Group 2 are known as the. 27) A) halogens B) alkaline earth metals C) alkali metals D) chalcogens E) noble gases 28) Elements in Group 18 are known as the. 28) A) noble gases B) alkaline earth metals C) chalcogens D) alkali metals E) halogens 29) Elements in Group 7A are known as the. 29) A) noble gases B) alkali metals C) alkaline earth metals D) halogens E) chalcogens

9 30) Elements in Group 1A are known as the _. 30) A) alkaline earth metals B) alkali metals C) chalcogens D) halogens E) noble gases 31) In the periodic table, the rows are called _ and the columns are called _. 31) A) periods, groups B) cogeners, families C) staffs, families D) octaves, groups E) rows, groups 32) Vertical columns of the periodic table are known as _. 32) A) periods B) metalloids C) groups D) nonmetals E) metals 33) Which pair of atoms constitutes a pair of isotopes of the same element? 33) A)'4X 6 6 m I9v 12X 19K B) 10X 9 * Q?x '74x E) X