1st Quarter Chemistry Prep

1 picometer = __________ centimeters a. 1 ´ 10-10 b. 1 ´ 1010 c. 1 ´ 10-8 d. 1 ´ 10-12 e. 1 ´ 108

a

Aluminum reacts with a certain nonmetallic element to form a compound with the general formula AlX. Element X is a diatomic gas at room temperature. Element X must be __________. a. nitrogen b. fluorine c. chlorine d. sulfur e. oxygen

a

Predict the empirical formula of the ionic compound that forms from magnesium and fluorine. a. Mg2F3 b. MgF2 c. MgF d. Mg2F e. Mg3F2

b

The charge on the __________ ion is -3. a. acetate b. nitride c. permanganate d. sulfate e. oxide

b

The correct formula for molybdenum(IV) hypochlorite is __________. a. MoCl4 b. Mo(ClO)4 c. Mo(ClO3)4 d. Mo(ClO4)4 e. Mo(ClO2)4

b

The correct name for H2SO3 is __________. a. sulfur hydroxide b. sulfurous acid c. hydrosulfuric acid d. hydrosulfic acid e. sulfuric acid

b

The correct name for HClO3 is __________. a. perchloric acid b. chloric acid c. hydrochloric acid d. hydrochlorous acid e. chlorous acid

b

The correct name for HIO2 is __________. a. periodic acid b. iodous acid c. hypoiodic acid d. periodous acid e. hydriodic acid

b

Aluminum forms an ion with a charge of __________. a. 1+ b. 3+ c. 3- d. 2+ e. 1-

b

An object will sink in a liquid if the density of the object is greater than that of the liquid. The mass of a sphere is 9.83 g. If the volume of this sphere is less than __________ cm3, then the sphere will sink in liquid mercury (density = 13.6 g/cm3). a. 0.723 b. 1.38 c. 134 d. 7.48 e. none of the above

a

Barium forms an ion with a charge of __________. a. 2+ b. 3- c. 3+ d. 2- e. 1+

a

Chromium and chlorine form an ionic compound whose formula is CrCl3. The name of this compound is __________. a. chromium(III) chloride b. chromium(III) trichloride c. chromic trichloride d. monochromium trichloride e. chromium chlorine

a

Combustion of a 1.031-g sample of a compound containing only carbon, hydrogen, and oxygen produced 2.265 g of CO2 and 1.236 g of H2O. What is the empirical formula of the compound? a. C3H8O b. C3H9O3 c. C3H5O d. C3H6O3 e. C6H16O2

a

How many grams of hydrogen are in 46 g of CH4O? a. 5.8 b. 2.8 c. 0.36 d. 184 e. 1.5

a

Magnesium and sulfur form an ionic compound with the formula __________. a. MgS b. Mg2S c. Mg2S2 d. Mg2S3 e. MgS2

a

Potassium forms an ion with a charge of __________. a. 1+ b. 2+ c. 2- d. 0 e. 1-

a

Predict the empirical formula of the ionic compound that forms from magnesium and oxygen. a. MgO b. MgO2 c. Mg3O2 d. Mg2O2 e. Mg2O

a

Sulfur forms an ion with a charge of __________. a. 2- b. 6- c. 2+ d. 3+ e. 6+

a

The correct formula of iron(III) bromide is __________. a. FeBr3 b. Fe3Br c. FeBr2 d. FeBr e. Fe3Br3

a

The correct name for K2S is __________. a. potassium sulfide b. potassium sulfate c. potassium bisulfide d. potassium disulfide e. dipotassium sulfate

a

The correct name for Na2O2 is _________. a. sodium peroxide b. disodium oxide c. sodium oxide d. sodium dioxide e. disodium dioxide

a

The correct name for Ni(CN)2 is __________. a. nickel (II) cyanide b. nickel cyanate c. nickel carbonate d. nickel (I) cyanide e. nickel (I) nitride

a

The name of the ionic compound V2O3 is __________. a. vanadium(III) oxide b. vanadium oxide c. vanadium(III) trioxide d. vanadium(II) oxide e. divanadium trioxide

a

What is the molecular formula for n-propanol? a. C3H7OH b. C4H9OH c. CH3OH d. C2H5OH e. C5H11OH

a

When the following equation is balanced, the coefficient of HNO3 is __________. HNO3 (aq) + CaCO3 (s) ® Ca(NO3)2 (aq) + CO2 (g) + H2O (l) a. 2 b. 1 c. 5 d. 3 e. 4

a

Which atom has the smallest number of neutrons? a. nitrogen-14 b. fluorine-19 c. oxygen-16 d. neon-20 e. carbon-14

a

Which compounds do not have the same empirical formula? a. CO, CO2 b. C2H4, C3H6 c. C2H5COOCH3, CH3CHO d. C2H4O2, C6H12O6 e. C2H2, C6H6

a

Which element forms an ion with the same charge as the ammonium ion? a. potassium b. calcium c. chlorine d. oxygen e. nitrogen

a

Which one of the following is the formula of hydrochloric acid? a. HClO2 b. HClO3 c. HClO d. HClO4 e. HCl

a

Which one of the following polyatomic ions has the same charge as the hydroxide ion? a. nitrate b. carbonate c. sulfate d. ammonium e. phosphate

a

The element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is __________ amu. image: http://goo.gl/R2ISu a. 221.0 b. 220.4 c. 218.5 d. 219.7 e. 220.42

b

The formula for zinc phosphate isZn3(PO4)2. What is the formula for cadmium arsenate? a. Cd2(AsO4)4 b. Cd3(AsO4)2 c. Cd3(AsO3)4 d. Cd2(AsO4)3 e. Cd4(AsO2)3

b

The formula of ammonium carbonate is __________. a. (NH3)2CO3 b. (NH4)2CO3 c. NH4CO2 d. (NH3)2CO4 e. N2(CO3)3

b

The formula of the carbonate ion is __________. a. CO2- b. CO32- c. CO- d. CO22- e. CO33-

b

The formula of the chromate ion is __________. a. CrO23- b. CrO42- c. CrO2- d. CrO32- e. CrO-

b

The ions Ca2+ and PO43- form a salt with the formula __________. a. Ca(PO4)2 b. Ca3(PO4)2 c. Ca2PO4 d. Ca2(PO4)3 e. CaPO4

b

The name of the ionic compound KBrO4 is __________. a. potassium bromate b. potassium perbromate c. potassium perbromite d. potassium hypobromate e. potassium bromide

b

The number 1.00430 has __________ significant figures. a. 4 b. 6 c. 2 d. 5 e. 3

b

What is the correct formula for ammonium sulfide? a. NH3S b. (NH4)2S c. NH4SO3 d. N2S3 e. (NH4)2SO4

b

When the following equation is balanced, the coefficient of dinitrogen pentoxide is __________. N2O5 (g) + H2O (l) ® HNO3 (aq) a. 5 b. 1 c. 3 d. 2 e. 4

b

Which formula/name pair is incorrect? a. Fe2(SO3)3 iron(III) sulfite b. Fe2(SO4)3 iron(III) sulfide c. FeSO4 iron(II) sulfate d. FeSO3 iron(II) sulfite e. FeS iron(II) sulfide

b

Which metal does not form cations of differing charges? a. Cu b. Na c. Fe d. Sn e. Co

b

Which of the following are chemical processes? 1. rusting of a nail 2. freezing of water 3. decomposition of water into hydrogen and oxygen gases 4. compression of oxygen gas a. 1, 2 b. 1, 3 c. 1, 3, 4 d. 1, 4 e. 2, 3, 4

b

Which species below is the nitride ion? a. NH4+ b. N 3- c. NO3- d. Na+ e. NO2-

b

__________-rays consist of fast-moving electrons. a. Alpha b. Beta c. Gamma d. X e. none of the above

b

3.337 g/cm3 = __________ kg/m3 a. 0.3337 b. 333.7 c. 3337 d. 3.337 ´ 10-5 e. 3.337 ´ 10-9

c

Calcium forms an ion with a charge of __________. a. 1+ b. 2- c. 2+ d. 0 e. 1-

c

Fluorine forms an ion with a charge of __________. a. 2+ b. 3- c. 1- d. 1+ e. 3+

c

Methane and ethane are both made up of carbon and hydrogen. In methane, there are 12.0 g of carbon for every 4.00 g of hydrogen, a ratio of 3:1 by mass. In ethane, there are 24.0 g of carbon for every 6.00 g of hydrogen, a ratio of 4:1 by mass. This is an illustration of the law of __________. a. constant composition b. conservation of mass c. multiple proportions d. conservation of matter e. octaves

c

Predict the empirical formula of the ionic compound that forms from sodium and fluorine. a. NaF2 b. Na3F2 c. NaF d. Na2F3 e. Na2F

c

Sodium forms an ion with a charge of __________. a. 0 b. 1- c. 1+ d. 2+ e. 2-

c

The charge on the manganese in the salt MnF3 is __________. a. 1+ b. 2+ c. 3+ d. 2- e. 1-

c

The correct name for H2CO3 is __________. a. carbonous acid b. carbohydrate c. carbonic acid d. hydrocarbonate e. carbohydric acid

c

The correct name for N2O5 is __________. a. nitrous oxide b. nitrogen oxide c. dinitrogen pentoxide d. nitrogen pentoxide e. nitric oxide

c

The correct name for SrO is __________. a. strontium peroxide b. strontium monoxide c. strontium oxide d. strontium hydroxide e. strontium dioxide

c

The formula for aluminum hydroxide is __________. a. Al2O3 b. Al2(OH)3 c. Al(OH)3 d. AlOH e. Al3OH

c

The formula of bromic acid is __________. a. HBrO2 b. HBrO4 c. HBrO3 d. HBr e. HBrO

c

The name of the ionic compound (NH4)3PO4 is __________. a. ammonia phosphide b. nitrogen hydrogen phosphate c. ammonium phosphate d. triammonium phosphate e. tetrammonium phosphate

c

The name of the ionic compound NH4CN is __________. a. ammonium hydrogen cyanate b. cyanonitride c. ammonium cyanide d. nitrogen hydrogen cyanate e. ammonium carbonitride

c

The number 1.00430 has __________ significant figures. a. 4 b. 6 c. 2 d. 5 e. 3

c

There are __________ sulfur atoms in 25 molecules of C4H4S2. a. 1.5 ´ 1025 b. 3.0 ´ 1025 c. 50 d. 6.02 ´ 1023 e. 4.8 ´ 1025

c

What is the molecular formula for heptane? a. C6H12 b. C6H14 c. C7H16 d. C7H14 e. C7H18

c

What is the molecular formula for propane? a. C3H6 b. C2H8 c. C3H8 d. C4H8 e. C4H10

c

When the following equation is balanced, the coefficient of C3H8O3 is __________. C3H8O3 (g) + O2 (g) ® CO2 (g) + H2O (g) a. 5 b. 7 c. 2 d. 1 e. 3

c

Which formula/name pair is incorrect? a. Mg(MnO4)2 magnesium permanganate b. Mn(NO3)2 manganese(II) nitrate c. Mg3N2 magnesium nitrite d. Mn(NO2)2 manganese(II) nitrite e. Mg(NO3)2 magnesium nitrate

c

Which one of the following compounds is copper(I) chloride? a. CuCl2 b. Cu3Cl2 c. CuCl d. Cu2Cl e. Cu2Cl3

c

1 kilogram = __________ milligrams a. 1 ´ 10-6 b. 1,000 c. 10,000 d. 1,000,000 e. none of the above

d

Aluminum reacts with a certain nonmetallic element to form a compound with the general formula Al2X3. Element X must be from Group __________ of the Periodic Table of Elements. a. 4A b. 3A c. 7A d. 6A e. 5A

d

Cathode rays are __________. a. neutrons b. atoms c. x-rays d. electrons e. protons

d

Element M reacts with fluorine to form an ionic compound with the formula MF3. The M-ion has 18 electrons. Element M is __________. a. P b. Ca c. Cr d. Sc e. Ar

d

Of the choices below, which one is not an ionic compound? a. NaCl b. MoCl6 c. PbCl2 d. PCl5 e. RbCl

d

Of the three types of radioactivity characterized by Rutherford, which is/are not particles? a. a-rays, b-rays, and g-rays b. a-rays c. b-rays d. g-rays e. a-rays and b-rays

d

Oxygen forms an ion with a charge of __________. a. 3+ b. 6+ c. 2+ d. 2- e. 3-

d

The correct name for CaH2 is __________. a. calcium hydroxide b. calcium dihydride c. calcium dihydroxide d. calcium hydride e. hydrocalcium

d

The correct name for HClO2 is __________. a. hypychloric acid b. perchloric acid c. hypochlorous acid d. chlorous acid e. chloric acid

d

The correct name for HNO2 is __________. a. nitric acid b. hydrogen nitrate c. hyponitrous acid d. nitrous acid e. pernitric acid

d

The correct name for Mg(ClO3)2 is __________. a. manganese perchlorate b. magnesium chloroxide c. manganese chlorate d. magnesium chlorate e. magnesium perchlorate

d

The correct name for SO is __________. a. sulfate b. sulfite c. sulfoxide d. sulfur monoxide e. sulfur oxide

d

The name of the binary compound N2O4 is __________. a. oxygen nitride b. nitrous oxide c. nitrogen(IV) oxide d. dinitrogen tetroxide e. nitrogen oxide

d

The species __________ contains 16 neutrons. a. 36Cl b. 80Br- c. 16O d. 31P e. 34S2-

d

What is the molecular formula for n-hexanol? a. C7H13OH b. C7H14OH c. C6H14OH d. C6H13OH e. C6H12OH

d

What is the molecular formula for nonane? a. C10H22 b. C10H24 c. C9H18 d. C9H20 e. C10H20

d

When calcium reacts with sulfur the compound formed is __________. a. Ca2S3 b. Ca3S2 c. Ca2S2 d. CaS e. CaS2

d

When the following equation is balanced, the coefficient of H2S is __________. FeCl3 (aq) + H2S (g) ® Fe2S3 (s) + HCl (aq) a. 4 b. 2 c. 5 d. 3 e. 1

d

When the following equation is balanced, the coefficient of H3PO4 is __________. H3PO4 (aq) + NaOH (aq) ® Na3PO4 (aq) + H2O (l) a. 4 b. 3 c. 0 d. 1 e. 2

d

Which of the following is an illustration of the law of constant composition? a. Water can be separated into other substances by a chemical process. b. Water and salt have different boiling points. c. Water is a compound. d. Water is 11% hydrogen and 89% oxygen by mass. e. Water boils at 100°C at 1 atm pressure.

d

Which one of the following has the element name and symbol correctly matched? a. P, potassium b. Mg, manganese c. Sn, silicon d. Ag, silver e. C, copper

d

Which pair of substances could be used to illustrate the law of multiple proportions? a. NaCl, KCl b. CH4, C6H12O6 c. H2O, O2 d. CO, CO2 e. SO2, H2SO4

d

A compound that is composed of carbon, hydrogen, and oxygen contains 70.6% C, 5.9% H, and 23.5% O by mass. The molecular weight of the compound is 136 amu. What is the molecular formula? a. C9H12O b. C5H6O2 c. C4H4O d. C8H4O e. C8H8O2

e

A correct name for Fe(NO3)2 is __________. a. ferrous nitrite b. ferric nitrite c. ferric nitrate d. iron nitrite e. ferrous nitrate

e

Iodine forms an ion with a charge of __________. a. 2+ b. 7- c. 1+ d. 2- e. 1-

e

Predict the empirical formula of the ionic compound that forms from aluminum and oxygen. a. Al3O2 b. AlO c. Al2O d. AlO2 e. Al2O3

e

The correct name for Al2O3 is __________. a. dialuminum trioxide b. aluminum trioxide c. dialuminum oxide d. aluminum hydroxide e. aluminum oxide

e

The correct name for CCl4 is __________. a. carbon tetrachlorate b. carbon chlorate c. carbon perchlorate d. carbon chloride e. carbon tetrachloride

e

The correct name of the compound Na3N is __________. a. sodium trinitride b. trisodium nitride c. sodium(III) nitride d. sodium azide e. sodium nitride

e

The formula for the compound formed between aluminum ions and phosphate ions is __________. a. Al(PO4)3 b. Al3(PO4)3 c. Al2(PO4)3 d. AlP e. AlPO4

e

The name of PCl3 is __________. a. monophosphorous trichloride b. potassium chloride c. trichloro potassium d. phosphorous(III) chloride e. phosphorus trichloride

e

What is the empirical formula of a compound that contains 27.0% S, 13.4% O, and 59.6% Cl by mass? a. SOCl b. SO2Cl c. ClSO4 d. S2OCl e. SOCl2

e

What is the formula for perchloric acid? a. HClO2 b. HCl c. HClO3 d. HClO e. HClO4

e

Which one of the following is the formula of hydrochloric acid? a. HClO2 b. HClO3 c. HClO d. HClO4 e. HCl

e