snc2p chemistry
name:
chemical reactions worksheet

colors: a = red, b = blue, c = green, d = yellow
1. use colored pencils to circle the common atoms or compounds in each equation to help you determine the type
of reaction it illustrates. use the code below to classify each reaction.
s = synthesis d = decomposition sr = single replacement dr = double replacement
____ p + o₂ → p₄o₁₀ ____ mg + o₂ → mgo
____ hgo → hg + o₂ ____ al₂o₃ → al + o₂
____ cl₂ + nabr → nacl + br₂ ____ h₂ + n₂ → nh₃
____ na + br₂ → nabr ____ cucl₂ + h₂s → cus + hcl
____ hgo + cl₂ → hgcl + o₂ ____ c + h₂ → ch₄
____ kclo₃ → kcl + o₂ ____ s₈ + f₂ → sf₆
____ bacl₂ + na₂so₄ → nacl + baso₄

Question

snc2p chemistry
name:
chemical reactions worksheet

colors: a = red, b = blue, c = green, d = yellow
1. use colored pencils to circle the common atoms or compounds in each equation to help you determine the type
of reaction it illustrates. use the code below to classify each reaction.
s = synthesis d = decomposition sr = single replacement dr = double replacement
____ p + o₂ → p₄o₁₀ ____ mg + o₂ → mgo
____ hgo → hg + o₂ ____ al₂o₃ → al + o₂
____ cl₂ + nabr → nacl + br₂ ____ h₂ + n₂ → nh₃
____ na + br₂ → nabr ____ cucl₂ + h₂s → cus + hcl
____ hgo + cl₂ → hgcl + o₂ ____ c + h₂ → ch₄
____ kclo₃ → kcl + o₂ ____ s₈ + f₂ → sf₆
____ bacl₂ + na₂so₄ → nacl + baso₄

Accepted Answer

# Brief Explanations:
- For $P + O_2
ightarrow P_4O_{10}$, two reactants combine to form one product, which is a synthesis reaction ($S$).
- For $Mg + O_2
ightarrow MgO$, two reactants combine to form one product, which is a synthesis reaction ($S$).
- For $HgO
ightarrow Hg + O_2$, one reactant breaks down into two products, which is a decomposition reaction ($D$).
- For $Al_2O_3
ightarrow Al + O_2$, one reactant breaks down into two products, which is a decomposition reaction ($D$).
- For $Cl_2+NaBr
ightarrow NaCl + Br_2$, one element replaces another in a compound, which is a single - replacement reaction ($SR$).
- For $H_2 + N_2
ightarrow NH_3$, two reactants combine to form one product, which is a synthesis reaction ($S$).
- For $Na + Br_2
ightarrow NaBr$, two reactants combine to form one product, which is a synthesis reaction ($S$).
- For $CuCl_2 + H_2S
ightarrow CuS+HCl$, the positive and negative ions of two compounds exchange places, which is a double - replacement reaction ($DR$).
- For $HgO + Cl_2
ightarrow HgCl + O_2$, one element replaces another in a compound, which is a single - replacement reaction ($SR$).
- For $C + H_2
ightarrow CH_4$, two reactants combine to form one product, which is a synthesis reaction ($S$).
- For $KClO_3
ightarrow KCl + O_2$, one reactant breaks down into two products, which is a decomposition reaction ($D$).
- For $S_8+F_2
ightarrow SF_6$, two reactants combine to form one product, which is a synthesis reaction ($S$).
- For $BaCl_2 + Na_2SO_4
ightarrow NaCl + BaSO_4$, the positive and negative ions of two compounds exchange places, which is a double - replacement reaction ($DR$).

# Answer:
$P + O_2
ightarrow P_4O_{10}$: $S$
$Mg + O_2
ightarrow MgO$: $S$
$HgO
ightarrow Hg + O_2$: $D$
$Al_2O_3
ightarrow Al + O_2$: $D$
$Cl_2+NaBr
ightarrow NaCl + Br_2$: $SR$
$H_2 + N_2
ightarrow NH_3$: $S$
$Na + Br_2
ightarrow NaBr$: $S$
$CuCl_2 + H_2S
ightarrow CuS+HCl$: $DR$
$HgO + Cl_2
ightarrow HgCl + O_2$: $SR$
$C + H_2
ightarrow CH_4$: $S$
$KClO_3
ightarrow KCl + O_2$: $D$
$S_8+F_2
ightarrow SF_6$: $S$
$BaCl_2 + Na_2SO_4
ightarrow NaCl + BaSO_4$: $DR$

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