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Chemical Reactions Re-Test
H Chemistry
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Predict the products for the decomposition reaction: H3N ->
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1 point
H + N
N3 + N2
H2 + N2
H3 + N
Predict the products for this single-replacement reaction: Li + Ni(ClO3)2 ->
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1 point
Ni + LiClO3
Ni + Li(ClO3)2
Ni + LiCl
Ni + NiClO3
Which of the following is the correct skeleton equation for the reaction that occurs when solid calcium is reacted with a solution of cobalt (III) nitrate to produce solid cobalt and a solution of calcium nitrate?
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1 point
Ca (s) + Co(NO3)3 (aq) --> Co (s) + Ca(NO3)2 (aq)
Ca (s) + CoNO3 (aq) --> Co (s) + CaNO3 (aq)
Ca (s) + Co(NO2) --> Co (s) + Ca(NO2)3
Ca (s) + CoN (aq) --> Co (s) + Ca3N2 (aq)
Which of the following is NOT an indicator of a chemical reaction?
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1 point
temperature/energy change
bubbles form
melting
color change
water forms
Predict the products of the synthesis reaction: K + S ->
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1 point
KS
K2S2
K2S
KS2
What are the correct coefficients needed to balance the reaction: __P (s) + O2 (g) --> P4O10 (s)?
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1 point
4, 10, 1
4, 5, 1
Option 4
1, 1, 1
8, 10, 2
What are the correct coefficients needed to balance the reaction: KClO3 (s) --> KCl (s) + O2 (g)?
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1 point
4, 4, 9
Option 5
4, 3, 3
2, 2, 2
2, 2, 3
What are the correct coefficients needed to balance the reaction: __AlCl3 (aq) + __Fe2O3 (s) --> __Al2O3 (s) + __FeCl3 (aq)?
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1 point
2, 1, 1, 1
2, 1, 1, 2
2, 3, 3, 2
1, 1, 1, 1
Which of the following is the correct skeleton equation when a solution of acetic acid reacts with solid barium hydroxide to form water and a solution of barium acetate?
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1 point
H2C2O4 (aq) + BaOH2 (s) --> H2O (l) + Ba(C2O4) (aq)
HC2H3O2 (aq) + Ba(OH)2 (s) --> H2O (l) + Ba(C2H3O2)2 (aq)
H2C2O4 (aq) + Ba(OH)2 (s) --> H2O (l) + BaC2O4 (aq)
H2C2H3O2 (aq) + BaOH2 (s) --> H2O (l) + Ba(C2H3O2)2 (aq)
What are the correct coefficients needed to balance the reaction: MgCl2 (aq) + AlPO4(s) --> Mg3(PO4)2 (s) + AlCl3 (aq)?
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1 point
1, 2, 1, 2
3, 2, 1, 1
3, 2, 1, 2
2, 2, 1, 2
A student mixes two clear liquids and a bright yellow solid appears at the bottom of the liquid. What are the two pieces of evidence that a chemical reaction has occurred?
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1 point
color and temperature/energy changes
color change and precipitation
color and odor change
precipitation and temperature/energy change
precipitation and freezing
Predict the products for this double-replacement reaction: Mn2S3 + K2SO4 ->
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1 point
Mn2(SO4)3 + K2S
Mn3(SO4)2 + K(SO4)2
Mn2SO4 + K2S3
MnSO4 + KS
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