Chemical Reactions
3 years ago
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20 QuestionsShow answers
  • Question 1
    120 seconds
    Q. Which is the name of the kind of solid substance formed in this figure?  
    answer choices
    aqueous 
    precipitate
    acid
    synthesis 
  • Question 2
    120 seconds
    Q. An element plus additional element reacts to form one product is an example of which type of chemical reaction? 
    answer choices
    combustion
    decomposition 
    synthesis 
    single replacement
  • Question 3
    120 seconds
    Q. Magnesium reacts with hydrochloric acid to produce magnesium chloride and hydrogen gas this happens because? 
    answer choices
    Magnesium is higher on the reactivity series then hydrogen
    magnesium is more reactive than hydrogen
    magnesium is able to break the bond between HCl and form MgCl2
    both b and c are correct
  • Question 4
    120 seconds
    Q. Which of the following compounds will not disassociate in water? 
    answer choices
    NaCl
    PbCl2
    MgNO3
    Na2SO4
  • Question 5
    120 seconds
    Q. Describes the number of molecules in a compound and is used to balance a chemical reaction. 
    answer choices
    coefficient 
    subscript
    superscript
    SI unit
  • Question 6
    120 seconds
    Q. Which type of reaction takes place in the presence of oxygen and produces carbon dioxide and water?
    answer choices
    double replacement 
    decomposition 
    combustion 
    single replacement
  • Question 7
    120 seconds
    Q. Provides evidence that a chemical reaction has occurred. 
    answer choices
    dissolving 
    melting
    formation of a gas
    bending
  • Question 8
    120 seconds
    Q. What is the probable product of a double-replacement reaction?
    answer choices
    A new compound and a replaced metal
    A new compound and a replaced nonmetal
    2 different compounds 1 aqueous and 1 that is a solid, liquid or gas
    A single compound
  • Question 9
    120 seconds
    Q. What type of chemical reaction takes place when fluorine reacts with sodium bromide?
    answer choices
    single replacement 
    double replacement 
    combustion
    synthesis 
  • Question 10
    120 seconds
    Q. Which reaction between halogens and halide salts will occur?
    answer choices
    F2(g)  +  FeI2(aq) → FeF2(aq)  +  I2 (g)
    Cl2(g) + SrF2(aq)  → SrCl2(aq)  +  F2(g)  
    I2(g)  + MgBr2(aq)  → MnI2(aq)  + Br2(g)
    Br2(l)  +  CoCl2(aq) → CoBr2(aq)  +  Cl2(g)
  • Question 11
    120 seconds
    Q. A chemical reaction that shows the formation of a solid and identifies the spectator ions
    answer choices
    net ionic equation 
    double replacement 
    ionic equation 
    dissociation 
  • Question 12
    180 seconds
    Q. Predict the following reaction 
    NaCl   +   Ca(NO3)2 --> 
    answer choices
    no reaction both products are aqueous 
    Calcium chloride and sodium nitrate are produced  
    sodium nitrate is a solid formed 
    calcium chloride is the solid formed
  • Question 13
    120 seconds
    Q. A compound is reacted and forms two new substances. What type of reaction is this? 
    answer choices
    combustion 
    synthesis 
    decomposition 
    single replacement 
  • Question 14
    120 seconds
    Q. Describes the number of atoms in a compound of each element. 
    answer choices
    coefficient 
    superscript 
    subscript 
    SI unit 
  • Question 15
    120 seconds
    Q. The word oxidation describes 
    answer choices
    gain of electrons
    loss of electrons 
    number of electrons remains the same
    number of electrons transfered
  • Question 16
    120 seconds
    Q. The word reduction describes 
    answer choices
    gain of electrons 
    loss of electrons 
    number of electrons remains the same
    transfer of electrons
  • Question 17
    120 seconds
    Q. What are the correct coefficients when this equation is balanced?
    KClO3  --> KCl  +  O2
    answer choices
    2,2,2
    2,2,3
    1,2,3
    3,3,3
  • Question 18
    120 seconds
    Q. Which half reaction shows the element being reduced.  In the following reaction. 
    2Na   +   Cl2  --> 2NaCl
    answer choices
    Na0   --> Na+1   +   1e-
    Cl20  +  2e-  --> 2Cl-
    Na0  +  1e- --> Na+1  
    Cl20 --> 2Cl-  + 2e-
  • Question 19
    120 seconds
    Q. Potassium iodide is a catalyst in a chemical reaction where would this be placed when writing the chemical reaction? 
    answer choices
    product side
    reactant side
    above the arrow
    left out 
  • Question 20
    120 seconds
    Q. A metal is reacted with an acid to produce a salt and a hydrogen gas. What type of reaction has occurred? 
    answer choices
    neutralization 
    double replacement 
    single replacement 
    synthesis 
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