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WorksheetsUnit 4.4 (Reactions) Practice Quiz
Total questions: 18
Worksheet time: 12mins
Which of the following elements would require a subscript of 2 when written in a chemical equation (due to being diatomic)?
solid carbon (C)
gaseous neon (Ne)
gaseous chlorine (Cl)
gaseous helium (He)
Name the part in RED:
2H2 + O2 -> 2H2O
Coefficient
Product
Yield
Subscript
A precipitate is...
a gas
a liquid
a solid
a solution
To balance a chemical reaction, it may be necessary to adjust the
coefficients
exponents
subscripts
formulas of the products
How many oxygen atoms are shown here (taking into account the coefficient)?
4
3
12
1
This equation is an example of which general type of reaction? Mg(s)+2HCl(aq) → H2(g)+MgCl2(aq)
synthesis
decomposition
single-displacement
double-displacement
What are always the product(s) of the complete combustion of a hydrocarbon (like CH4)
O2
Acids and Bases
H2O and CO2
H2 and C
What type of reaction is shown in the image?
synthesis
decomposition
combustion
single-displacement
C4H8 + 6O2 --> 4CO2 + 4H2O is what type of reaction?
combustion
single-displacement
double-displacement
synthesis
CH4 + 2 O2 -> CO2 + 2 H2O
H=4
O=4
H=4
O=2
H=4
O=2
H=4
O=4
Balance the following equation. What coefficient would end up in front of Fe? _*_ Fe (s) + ____ O2 (g) → ____ Fe2O3 (s)
1
2
3
4
Predict the correct formulas of the products for this reaction: NaCl + F2 --> ____ + ____
ClF2 + Na
NaF + Cl2
NaF2 + Cl
NaF + Cl
Predict the correct formulas of the products to this reaction: CaCl2 + Na3PO4 → ____ + _____
CaPO4 + NaCl2
Ca3(PO4)2 + NaCl
Na2Ca + Cl3(PO4)
Ca2(PO4)3 + NaCl2
Balance the following equation. What coefficient would go in front of ammonium nitrate? ____ (NH4)3PO4 + ____ Pb(NO3)2 → ____ Pb3(PO4)2 + ____ NH4NO3
(a)
