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WorksheetsUnit 4.4 Honors Practice (Equations/Reactions)
Total questions: 19
Worksheet time: 18mins
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)
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
Predict the correct formulas of the products for this reaction: NaI + Cl2 --> ____ + ____
ICl2 + Na
NaCl + I2
NaCl2 + I
NaCl + I
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
Is this reaction balanced? If not, select the choice that best explains why it is not balanced.
Mg(NO3)2 + 2Na --> 2NaNO3 + Mg
No because Mg is not balanced
No because N is not balanced
No because Na is not balanced
No because O is not balanced
yes
Which coefficient must go in the missing spot to balance the chemical equation?
___Cu + O2 --> 2Cu2O
4
1
5
3
Predict the products of this reaction: MgO + Li --> ?
LiO + Mg
MgO + Li
Li2O + Mg
LiMg + O
MgLi + O
Predict the products from this reaction: KCl + Mg --> ?
MgCl2 + K2
K2Mg + Cl2
MgCl2 + K
KCl + Mg
MgCl + K
Predict the products from the following reaction:
KCl + Na2SO4
NaK + SO4Cl
K2SO4 + NaCl
KaS + ClONa
KN + a
In this balanced reaction, how many oxygens are there on each side?
Al(NO3)3 + 3Na --> 3NaNO3 + Al
10
9
7
3
