Deck 7: Chemical Reactions

Question 1

What is the term for a type of reaction in which two or more substances are produced from a single compound?

A)combination
B)decomposition
C)double replacement
D)neutralization
E)single replacement

Answer 1

decomposition

Question 2

What is the term for an ionic compound produced from an acid-base reaction?

A)condensate
B)precipitate
C)salt
D)suspension
E)none of the above

Answer 2

salt

Question 3

What is the term for a compound that releases hydrogen ions when dissolved in water?

A)acid
B)base
C)aqueous salt
D)aqueous solution
E)none of the above

Answer 3

acid

Question 4

What is the term for a compound that releases hydroxide ions when dissolved in water?

A)acid
B)base
C)aqueous acid
D)aqueous base
E)none of the above

Question 5

What is the term for a particle composed of two nonmetal atoms?

A)formula unit
B)diatomic molecule
C)monoatomic ion
D)polyatomic ion
E)none of the above

Question 6

What term refers to an insoluble solid substance that is produced from a chemical reaction in aqueous solution?

A)condensate
B)precipitate
C)salt
D)suspension
E)none of the above

Question 7

What is the term for a metal that undergoes reaction with water at room temperature?

A)active metal
B)alkali metal
C)alkaline earth metal
D)rare earth metal
E)none of the above

Question 8

What is the general term for a substance dissolved in water?

A)aqueous salt
B)aqueous substance
C)aqueous solution
D)water solution
E)none of the above

Question 9

What is the term for a type of reaction in which an acid and a base react to produce a salt and water?

A)combination
B)decomposition
C)double replacement
D)neutralization
E)single replacement

Question 10

What is the term for a substance produced from a chemical change?

A)catalyst
B)compound
C)product
D)reactant
E)none of the above

Question 11

What is the term for the process of undergoing a chemical change?

A)chemical equation
B)chemical formula
C)chemical reaction
D)chemical symbol
E)none of the above

Question 12

What is the term for a substance that speeds up a reaction without being permanently changed?

A)accelerator
B)catalyst
C)inhibitor
D)reactant
E)none of the above

Question 13

What is the term for a substance undergoing a chemical change?

A)catalyst
B)compound
C)product
D)reactant
E)none of the above

Question 14

What is the term for the relative order of metals arranged by their ability to undergo reaction?

A)activity series
B)elemental series
C)reactivity series
D)productivity series
E)none of the above

Question 15

What term refers to a chemical reaction that releases heat energy?

A)endothermic
B)exothermic
C)isothermal
D)all of the above
E)none of the above

Question 16

What is the term for a type of reaction in which two substances react to produce a single compound?

A)combination
B)decomposition
C)double replacement
D)neutralization
E)single replacement

Question 17

What is the term for a type of reaction in which two cations in different compounds exchange anions?

A)combination
B)decomposition
C)double replacement
D)neutralization
E)single replacement

Question 18

What term refers to a chemical reaction that absorbs heat energy?

A)endothermic
B)exothermic
C)isothermal
D)all of the above
E)none of the above

Question 19

What is the term for a shorthand representation using formulas and symbols to describe a chemical change?

A)chemical equation
B)chemical formula
C)chemical reaction
D)chemical symbol
E)none of the above

Question 20

What is the term for a digit in front of a chemical formula that helps to balance a chemical equation?

A)coefficient
B)exponent
C)subscript
D)superscript
E)none of the above

Question 21

What is the term for a digit in a chemical formula that represents the number of atoms or ions occurring in a substance?

A)coefficient
B)exponent
C)subscript
D)superscript
E)none of the above

Question 22

Which of the following elements occurs naturally as diatomic molecules?

A)carbon
B)phosphorus
C)sulfur
D)all of the above
E)none of the above

Question 23

Which of the statements below best describes the following reaction? Na₂CO₃(s) Ni(NO₂)2(s)+ O₂(g)

A)Nickel(II)nitrate decomposes with heat.
B)Nickel(II)nitrate decomposes to nickel(II)nitrite and oxygen.
C)Nickel(II)nitrate decomposes to nickel(II)nitrite and oxygen gas.
D)Nickel(II)nitrate is heated to give nickel(II)nitrite and oxygen.
E)Solid nickel(II)nitrate is heated to give solid nickel(II)nitrite and oxygen gas.

Question 24

Which of the following is a general guideline for balancing an equation?

A)Write correct formulas for reactants and products.
B)Begin balancing with the most complex formula.
C)Balance polyatomic ions as a single unit.
D)Check each reactant and product to verify the coefficients.
E)all of the above

Question 25

Which of the following formulas represents an element in its natural state?

A)B2
B)C₂
C)N₂
D)P2
E)none of the above

Question 26

Which of the following is evidence for a reaction when two solutions mix?

A)Bubbles are released.
B)Insoluble particles form.
C)An indicator changes color.
D)Heat is produced.
E)all of the above

Question 27

Which of the following is evidence for a chemical reaction?

A)A gas is produced.
B)An insoluble solid is produced in solution.
C)A permanent color change is observed.
D)An energy change is observed.
E)all of the above

Question 28

Which of the following is evidence for a chemical reaction?

A)A gas is detected.
B)A precipitate is formed.
C)A flame is observed.
D)all of the above
E)none of the above

Question 29

Which of the following is evidence for a chemical reaction?

A)change in physical state
B)change in color
C)change in mass
D)all of the above
E)none of the above

Question 30

Which of the statements below best describes the following reaction? HC₂H₃O₂(aq)+ NaOH(aq)→ NaC₂H₃O₂(aq)+ H₂O(l)

A)An acid plus a base react to produce a salt and water.
B)Acetic acid and sodium hydroxide produce sodium acetate and water.
C)Acetic acid and sodium hydroxide solutions react to produce sodium acetate and water.
D)Acetic acid and sodium hydroxide solutions react to produce sodium acetate solution and water.
E)Aqueous solutions of acetic acid and sodium hydroxide react to produce aqueous sodium acetate and water.

Question 31

What is the term for a type of reaction in which a more active metal displaces a less active metal from a solution?

A)combination
B)decomposition
C)double replacement
D)neutralization
E)single replacement

Question 32

Which of the following formulas represents an element in its natural state?

A)Cl₂
B)Br₂
C)I₂
D)all of the above
E)none of the above

Question 33

Which of the following elements occurs naturally as diatomic molecules?

A)argon gas
B)helium gas
C)neon gas
D)all of the above
E)none of the above

Question 34

Which of the statements below best describes the following reaction? HCl(aq)+ KOH(aq)→ KCl(aq)+ H₂O(l)

A)An acid plus a base react to produce a salt and water.
B)Hydrochloric acid and potassium hydroxide produce potassium chloride and water.
C)Hydrochloric acid and potassium hydroxide solutions react to produce potassium chloride and water.
D)Hydrochloric acid and potassium hydroxide solutions react to produce potassium chloride solution and water.
E)Aqueous solutions of hydrochloric acid and potassium hydroxide react to produce aqueous potassium chloride and water.

Question 35

Which of the statements below best describes the following reaction? Na₂CO₃(s) Na₂O(s)+ CO₂(g)

A)Sodium carbonate decomposes with heat.
B)Sodium carbonate decomposes to sodium oxide and carbon dioxide.
C)Sodium carbonate decomposes to sodium oxide and carbon dioxide gas.
D)Sodium carbonate is heated to give sodium oxide and carbon dioxide.
E)Solid sodium carbonate is heated to give solid sodium oxide and carbon dioxide gas.

Question 36

Which of the statements below best describes the following reaction? HNO₃(aq)+ LiOH(aq)→ LiNO₃(aq)+ H₂O(l)

A)An acid plus a base react to produce a salt and water.
B)Nitric acid and lithium hydroxide produce lithium nitrate and water.
C)Nitric acid and lithium hydroxide solutions react to produce lithium nitrate and water.
D)Nitric acid and lithium hydroxide solutions react to produce lithium nitrate solution and water.
E)Aqueous solutions of nitric acid and lithium hydroxide react to produce aqueous lithium nitrate and water.

Question 37

Which of the following elements occurs naturally as diatomic molecules?

A)chlorine gas
B)fluorine gas
C)iodine vapor
D)all of the above
E)none of the above

Question 38

Which of the following is evidence for a chemical reaction releasing energy?

A)light
B)heat
C)flame
D)explosion
E)all of the above

Question 39

Which of the following is evidence for a chemical reaction producing a gas?

A)A flaming wooden splint is extinguished.
B)A glowing wooden splint bursts into flame.
C)Two solutions poured together release bubbles.
D)An aged vitamin capsule releases an odor.
E)all of the above

Question 40

Which of the following formulas represents an element in its natural state?

A)H₂
B)N₂
C)O₂
D)all of the above
E)none of the above

Question 41

What is the coefficient of oxygen gas after balancing the following equation? __HgO(s) __Hg(s)+ __O₂(g)

A)1
B)2
C)3
D)4
E)none of the above

Question 42

What is the coefficient of oxygen gas after balancing the following equation? __H₂O₂(l) __H₂O(l)+ __O₂(g)

A)1
B)2
C)3
D)4
E)none of the above

Question 43

What is the coefficient of hydrogen gas after balancing the following equation? __Pb(s)+ __HNO₃(aq)→ __Pb(NO₃)4(aq)+ __H₂(g)

A)1
B)2
C)3
D)4
E)none of the above

Question 44

What is the coefficient of phosphorus after balancing the following equation? __P(s)+ __O₂(g)→ __P2O5(s)

A)1
B)2
C)4
D)5
E)none of the above

Question 45

What is the coefficient of carbon dioxide after balancing the following equation? __KHCO₃(s) __k₂CO₃(s)+ __H₂O(g)+ __CO₂(g)

A)1
B)2
C)3
D)4
E)none of the above

Question 46

What is the coefficient of carbon dioxide after balancing the following equation? __Cr₂(CO₃)3(s) __Cr₂O₃(s)+ __CO₂(g)

A)1
B)2
C)3
D)4
E)none of the above

Question 47

What is the coefficient of Cd metal after balancing the following equation? __Al(s)+ __Cd(C₂H₃O₂)2(aq)→ __Al(C₂H₃O₂)3(aq)+ __Cd(s)

A)1
B)2
C)3
D)4
E)none of the above

Question 48

What is the coefficient of oxygen gas after balancing the following equation? __P(s)+ __O₂(g)→ __P2O5(s)

A)1
B)2
C)4
D)5
E)none of the above

Question 49

What is the coefficient of hydrogen gas after balancing the following equation? __Co(s)+ __HCl(aq)→ __CoCl3(aq)+ __H₂(g)

A)1
B)2
C)3
D)4
E)none of the above

Question 50

What is the coefficient of nickel metal after balancing the following equation? __Fe(s)+ __Ni(NO₃)2(aq)→ __Fe(NO₃)3(aq)+ __Ni(s)

A)1
B)2
C)3
D)4
E)none of the above

Question 51

Which of the following is not a general guideline for balancing an equation?

A)Write correct formulas for reactants and products.
B)Begin balancing with the most complex formula.
C)Balance polyatomic ions as a single unit.
D)Check each reactant and product to verify the coefficients.
E)Change a subscript in a formula if the equation is not balanced.

Question 52

What is the coefficient of chlorine gas after balancing the following equation? __Fe(s)+ __Cl₂(g)→ __FeCl3(s)

A)1
B)2
C)3
D)4
E)none of the above

Question 53

What is the coefficient of nitrogen gas after balancing the following equation? __N₂(g)+ __H₂(g)→ __NH₃(g)

A)1
B)2
C)3
D)4
E)none of the above

Question 54

What is the coefficient of silver metal after balancing the following equation? __Cu(s)+ __AgNO₃(aq)→ __Cu(NO₃)2(aq)+ __Ag(s)

A)1
B)2
C)3
D)4
E)none of the above

Question 55

What is the coefficient of hydrogen gas after balancing the following equation? __N₂(g)+ __H₂(g)→ __NH₃(g)

A)1
B)2
C)3
D)4
E)none of the above

Question 56

What is the coefficient of oxygen gas after balancing the following equation? __P(s)+ __O₂(g)→ __P2O₃(s)

A)1
B)2
C)3
D)5
E)none of the above

Question 57

What is the coefficient of oxygen gas after balancing the following equation? __LiNO₃(s) __LiNO₂(s)+ __O₂(g)

A)1
B)2
C)3
D)4
E)none of the above

Question 58

What is the coefficient of ammonia gas after balancing the following equation? __N₂(g)+ __H₂(g)→ __NH₃(g)

A)1
B)2
C)3
D)4
E)none of the above

Question 59

What is the coefficient of oxygen gas after balancing the following equation? __AgClO₃(s) __AgCl(s)+ __O₂(g)

A)1
B)2
C)3
D)4
E)none of the above

Question 60

Which of the following is not a general guideline for balancing an equation?

A)Write correct formulas for reactants and products
B)Begin balancing with the most complex formula
C)Balance polyatomic ions as a single unit
D)Balance ionic compounds as a single unit
E)Check each reactant and product to verify the coefficients

Question 61

What type of chemical reaction is illustrated in the following example? AlCl3(aq)+ AgNO₃(aq)→ Al(NO₃)3(aq)+ AgCl(s)

A)combination reaction
B)decomposition reaction
C)single-replacement reaction
D)double-replacement reaction
E)neutralization reaction

Question 62

What is the coefficient of water after balancing the following equation? __HC₂H₃O₂(aq)+ __Ca(OH)2(aq)→ __Ca(C₂H₃O₂)2(aq)+ __H₂O(l)

A)1
B)2
C)3
D)6
E)none of the above

Question 63

What is the coefficient of water after balancing the following equation? __H₂SO₄(aq)+ __NaOH(aq)→ __Na₂SO₄(aq)+ __H₂O(l)

A)1
B)2
C)3
D)6
E)none of the above

Question 64

What is the coefficient of water after balancing the following equation? __Li(s)+ __H₂O(l)→ __LiOH(aq)+ __H₂(g)

A)1
B)2
C)3
D)4
E)none of the above

Question 65

What type of chemical reaction is illustrated in the following example? HClO₄(aq)+ KOH(aq)→ KClO₄(aq)+ H₂O(l)

A)combination reaction
B)decomposition reaction
C)single-replacement reaction
D)double-replacement reaction
E)neutralization reaction

Question 66

What type of chemical reaction is illustrated in the following example? N₂(g)+ H₂(g)→ NH₃(g)

A)combination reaction
B)decomposition reaction
C)single-replacement reaction
D)double-replacement reaction
E)neutralization reaction

Question 67

What type of chemical reaction is illustrated in the following example? SO₂(g)+ O₂(g)→ SO₃(g)

A)combination reaction
B)decomposition reaction
C)single-replacement reaction
D)double-replacement reaction
E)neutralization reaction

Question 68

What type of chemical reaction is illustrated in the following example? H₂SO₄(aq)+ NaOH(aq)→ Na₂SO₄(aq)+ H₂O(l)

A)combination reaction
B)decomposition reaction
C)single-replacement reaction
D)double-replacement reaction
E)neutralization reaction

Question 69

What is the coefficient of sodium metal after balancing the following equation? __Na(s)+ __H₂O(l)→ __NaOH(aq)+ __H₂(g)

A)1
B)2
C)3
D)4
E)none of the above

Question 70

What type of chemical reaction is illustrated in the following example? KClO₃(s) KCl(s)+ O₂(g)

A)combination reaction
B)decomposition reaction
C)single-replacement reaction
D)double-replacement reaction
E)neutralization reaction

Question 71

What is the coefficient of NaCl after balancing the following equation? __CrCl3(aq)+ __Na₂CO₃(aq)→ __Cr₂(CO₃)3(s)+ __NaCl(aq)

A)1
B)2
C)3
D)6
E)none of the above

Question 72

What is the coefficient of hydrogen gas after balancing the following equation? __Mn(s)+ __H₂SO₄(aq)→ __MnSO₄(aq)+ __H₂(g)

A)1
B)2
C)3
D)4
E)none of the above

Question 73

What is the coefficient of hydrogen gas after balancing the following equation? __Ca(s)+ __H₂O(l)→ __Ca(OH)2(aq)+ __H₂(g)

A)1
B)2
C)3
D)4
E)none of the above

Question 74

What type of chemical reaction is illustrated in the following example? Zn(s)+ HCl(aq)→ ZnCl₂(aq)+ H₂(g)

A)combination reaction
B)decomposition reaction
C)single-replacement reaction
D)double-replacement reaction
E)neutralization reaction

Question 75

What is the coefficient of AgCl after balancing the following equation? __AlCl3(aq)+ __AgNO₃(aq)→ __Al(NO₃)3(aq)+ __AgCl(s)

A)1
B)2
C)3
D)6
E)none of the above

Question 76

What type of chemical reaction is illustrated in the following example? Sr(s)+ H₂O(l)→ Sr(OH)2(aq)+ H₂(g)

A)combination reaction
B)decomposition reaction
C)single-replacement reaction
D)double-replacement reaction
E)neutralization reaction

Question 77

What type of chemical reaction is illustrated in the following example? KHCO₃(s) k₂CO₃(s)+ H₂O(g)+ CO₂(g)

A)combination reaction
B)decomposition reaction
C)single-replacement reaction
D)double-replacement reaction
E)neutralization reaction

Question 78

What type of chemical reaction is illustrated in the following example? FeBr3(aq)+ AgNO₃(aq)→ Fe(NO₃)3(aq)+ AgBr(s)

A)combination reaction
B)decomposition reaction
C)single-replacement reaction
D)double-replacement reaction
E)neutralization reaction

Question 79

What is the coefficient of water after balancing the following equation? __H₃PO₄(aq)+ __Ba(OH)2(aq)→ __Ba3(PO₄)2(s)+ __H₂O(l)

A)1
B)2
C)3
D)6
E)none of the above

Question 80

What is the coefficient of KNO₃ after balancing the following equation? __Au(NO₃)3(aq)+ __k₂CrO₄(aq)→ __Au2(CrO₄)3(s)+ __KNO₃(aq)

A)1
B)2
C)3
D)6
E)none of the above