Chemistry Module 9 and 10 – Flashcards
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iodine is an element in group 7A of the periodic table. which * charge b- an anion with a 7- c- cation with a 1+ d- cation with a 7+
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a
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how does the nitrate ion differ from the nitrite ion? a- nitrite ion is monatomic b- nitrite ion has one less oxygen atom c- nitrite ion has a lower charge d- the two ions have opposite charges
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b
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which of the following is not a cation? a- sulfate b- mercurous ion c- iron(III) ion d- Ca2+
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a
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the nonmetals in groups 6a and 7a a- lose electrons when they form ions b- all have ions with a -1 charge c- end in -ate d- have a numerical charge that is found by subtracting 8 from the group number
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d
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when group 2a elements form ions, they a- gain 2 electrons b- gain 2 protons c- lose 2 protons d- lose 2 electrons
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d
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what type of ions have names ending in -ide a-only cations b- only anions c- only metal ions d- only gaseous ions
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b
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which of the following correctly provides the names and formulas of polytatomic ions? a- chromate: CRO4 2- dichromate: CrO7 2- b-carbonate HCO 3- Bicarbonate: CO3 2- c: sulfite S2- sulfate SO 3- d- nitrite: NO- Nitrate NO2 -
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a
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aluminum is a gorup 3a metal. which ion does Al typically form? A- Al 3- b- Al5 - c- Al 5+ d- Al3+
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d
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what does the "II" in the name iron(II) idicate about the cation? a- 2+ charge b- 2- charge c- 6+ charge d- 11+ charge
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a
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chromium can form either a 2+ or a 3+ ion. what is the stock name for the chromium ion with the 3+ charge? a chromium(III) b- chromium(3+) c- chromous d- chromate
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a
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what does an -ite or -ate ending in a polyatomic ion mean? a- nitrogen is in the formula b- bromine is in the formula c- oxygen is in the formula d- sulfur is in the formula
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c
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chromium can form either a 2+ or a 3+ ion. what is the stock name for the chromium ion with the 3+ charge a- chromate' b- chromium (III) c- chromous d- chromium(3+)
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b
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what is the sum of all charges in the formula for an ionic compound? a- 8 b. -1 c. 0 d. +1
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c
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which polyatomic ion forms a neutral compound when combines with a group 1A monatomic ion in a 1:1 ration? a. nitrate b. carbonate c. phosphate d. ammonion
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a
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which is correct? a. sn2+ stannic ion; sn4+ stannous ion b. Pb2+ lead ion; Pb4+ lead(IV) ion c. Pb2+ lead ion; Ob4+ ferric ion d. Co2+ cobalt(II) ion; Co3+ cobatous ion
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c
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what is the correct name for the N3- ion? a. nitrite ion b. nitrate ion c. nitrogen ion d. nitride ion
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d
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an -ate or -ite at the end of a compouind name usually indicates that the compound contains a. neutral molecules b. polyatomic anion c. fewer electrons than protons d. only 2 elements
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b
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which is correct? a. zine, Zn2+, zincate b. copper, Cu+, cuprous c. sulfure, sulfurous ion d. flourine, F+, flouride ion
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b
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when naming a transition metal ion that can have more than one common ionic charge, the numerical value of the charge is indicated by an a. suffix b.superscirpt c. roman numeral d. prefix
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c
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an -ate or -ite at the end of a compound name usually indicated that the compound contains a- polyatomic anion b. 2 elements c. fewer electrons than protons d. neutral molecules
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a
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what characteristic is shared by mosts imple polyatomic ions? a. they are cations b. bonded ionically c. positive charges d. they are anions
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d
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____ compound- a compound composed of two elements
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binary
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_______ ion: tightly bound group of atoms that behaes as a unit and has a polsitive or negative charge
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polyatomic
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any atom or group of atoms with a negative charge
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anion
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any atom or group of atoms with a positive charge
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cation
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what is the ending for all names of all binary compounds, both ionic and molecular? a- ide b. -ate c. -ade d.-ite
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a
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which is true about the composition of ionic compounds? a. they are composed of anion and cations b. they are composed of cations only c. they are composed of anions only d. they are formed from 2+ nonmetallic elements
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a
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____ compound- a compound composed of two elements, such as NaCl, or Al2O3
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binary
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a neutral group of atoms joined together by covalent bonds
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molecule
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____ compound: a compound that is composed of molecules
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molecular
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what is the ending for the names of al binary compounds, both ionic and molecular a- ite b. ade c. ate d. ide
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d
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sulfur hexaflouride is an example of a a. polyatomic ion b. polyatomic compound c. binary compound d.monatomic ion
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c
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binary molecular compounds are made of two: a. nonmetallic elements b. metallic elements c, polyatomic ions d. cations
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a
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which is the formula for phosphurus pentafluoride? a. p4 f5 b P5 F C. P5 F5 D. PF5
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d
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Which formula represents the binary molecular compound phosphorus trichloride? a. P Cl3 b. P Cl c. P3 Cl3 d. P3 Cl
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A
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how many atoms of fluorine are in each moleculae of disulfur decafluoride? a. 15 b 10 c. 2 d. 5
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b
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which is the correct name for N2 O5 a. nitrate oxide b. dinitrogen pentaxide c. nitrogen dioxide d. nitrous oxide
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b
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Consider a mystery compound having the formula MxTy. if the compound is NOT an acid only contains 2 elements if M is NOT a metal what is true about the compound? a. its name end in -ic b. contains a polyatomic ion c. its a binary molecular compound d. its name end in -ite or -ate
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c
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which subscript should be written to the right of the symbol for fluorine in the compound dinitrogen tetrafluoide? a. 1 b. 2 3. 4 d. 6
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c
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what is the name of the molecular compound NH3, which is also known as ammonia? a. trinitrogen hydride b. nitrogen trihydride c. dinitrogen monohydride d. monotrogen tetrahydride
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b
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a compound that contains one or more hydrogen atoms and produces hydrogen ions (H+) when dissolves in water
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acid
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an ionic compound that produces hydroxide ions when dissolved in water
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base
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___ compound is a compound composed of positive and negative ion
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ionic
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which of the following are produced when a base is dissolved in water? a. ammonium ions b. hydrogen ions c. hydroxide ions d. hydronium ions
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c
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which is the name of the base represented by the formula NH4 OH? A. nitrous hydroxide b. nitrogen hydroxide c. ammoium hydroxide d. hydrogen hydroxide
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c
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when dissolved in water, acids produce a. hydrogen ions b. negative ions c. oxide ions d. polyatomic ions
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a
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the name of the acid representd by the formula HCl is a. hydrogen chloride acid b. chloric acid c. hydrochloric acid d. chlorous acid
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c
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when naming acids, the prefix hydro is used when the name of the acid anion ends in a. ide b. ic c. ite d. ate
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a
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what is the formula for sulfurous acid? a. H2 SO2 B. H2 SO3 C. H2 SO4 D. H2 S
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b
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SUPPOSE YOU ENCOUNTER A CHEMICAL FORMULA with H as he cation. what do you know about this compound immediately? a. it is a polyatomic ionic compound b. it is a bse c. it is an acid d. it has a +1 charge
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C
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which formula represents a base? a. Li Oh b. HNO 2 C. H Cl O4 d. H Cl
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a
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law of ____ proportions: in samples of any chemical compound, the mases of the elements are always in the same proportions
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definite
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law of ____proportions: whenever the same two elements form more than one compound, the different masses of one element that combine with the same mass of the other element are in the ratio of small whole numbers.
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multiple
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a substance that contains two or more elements chemically combined in a fixed proportion
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compound
