Stoichiometry Test Review:
You must know everything on your Stoichiometry and Reaction Type Notes
- Reaction Types (Single displacement, double displacement, combination, decomposition)
- Naming and Formula Writing for Ionic and Covalent compounds
- Balancing Equations
- Calculating Molar Mass
- Mass to Mass Calculations
1. Reaction Types, Formula Writing, and Balancing Equations
For the following reactions:
a.) State the reaction type.
b.)Predict the products.
c.)Balance the equation.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
__ZnS + ___O2 
___Ca(OH)2 + ___HCl 
___HgO 
___NaI + ___Br2 
___Al(NO3)3 + ___H2SO4 
___MgCl2 
___Mg + ___O2 
___H2O 
___K2CO3 + ___BaCl2 
___Al + ___O2 
II. Molar Mass, Mass to Mass Calculations
11. What is the Molar Mass of AlBr3?
12. How many moles are in 100g of AlBr3?
13. How many molecules are in 100g of AlBr3?
14. How many grams H2O are produced if 5g of O2 is used?
15. How many particles are in 6.4 mol of H 2?
Practice Problems for Test:
1.
Consider the following reaction. Water (H2O) is produced from the reaction of oxygen gas (O2) with hydrogen gas (H2).
a. Write a balanced chemical equation for the reaction.
b. Is the reaction a physical change or a chemical change?
3. How many grams of MgO will you produce if you start with 25.0g of O2? Show your work!!!
2Mg + O2  2MgO
4.
What type of reaction is shown below?
C3H8 (g) + O2 (g)  CO2(g) + H2O (l)
5.
State the reaction type and balance the following equation:
6.
State the reaction type, predict the products of the following reaction and balance the equation.
AlCl3 + Ca(OH)2 
7.
Consider the following reaction:
Mg (s) + 2 HCl (aq)  MgCl2 (aq) + H2 (g)
How many liters of hydrogen, H2, do you produce if 50 grams of hydrochloric acid, HCl reacts?
Show your work.
8.
Consider the following reaction:
Mg (s) + 2 HCl (aq)  MgCl2 (aq) + H2 (g)
How many atoms of magnesium, Mg, do you need to produce 94 grams of magnesium chloride, MgCl2? Show your
work.
Living By Chemistry Assessments
© 2004 Key Curriculum Press
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