____ KCl. 22. Write and then balance the chemical equations. a. sulfur + iron ... whether a double-replacement reaction will occur based on solubility...
Chemical Equations Test Review Sheet Learning Target
Define and use correctly each of the vocabulary words for the unit. Define and give general equations for synthesis, decomposition, single-displacement, double-displacement and combustion reactions.
1. activity series
a) Elements or less complex compounds come together to form a single more complex compound
2. aqueous
b) A representation of the reactants and products of a chemical reaction by their symbols or formulas
3. chemical equation
c) Describes a substance that cannot dissolve in water
4. chemical reaction
d) Solid formed during a double-replacement reaction
5. coefficient
e) A substance that forms in a chemical reaction
6. combustion reaction
f) Ions in a compound switch places with ions in another compound to form two new compounds.
7. decomposition reaction
g) A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
8. double-replacement reaction
h) A substance that participates in a chemical reaction
9. formula equation
i) A single element replaces another one in a compound
10. insoluble
j) Describes a substance that will dissolve in water
11. law of conservation of mass
k) Compound breaks apart into either elements or less complex compounds.
12. precipitate
l) An equation in which the reactants and products in a chemical reaction are represented by words
13. products
m) Substance is dissolved in water
14. reactants
n) A small whole number that appears as a factor in front of a formula in a chemical equation
15. single-replacement reaction
o) A substance combines with oxygen, releasing a large amount of energy in the form of light and heat
16. soluble
p) A list of elements in order of their ability to react
17. synthesis reaction
q) The process by which one or more substances change to produce one or more different substances
18. word equation
r) The law that states that mass cannot be created or destroyed in ordinary chemical and physical changes
1
19. Give the general equation for the following types of reactions: a. synthesis b. decomposition c. single-replacement d. double-replacement Learning Target List four observations that suggest that a chemical reaction has taken place. 20. List four observations that suggest a chemical reaction has taken place.
Learning Targets
Write a formula equation for a given chemical reaction. Balance a formula equation by inspection. 21. Balance the following chemical equations. a. ____ KF + ____ Br2 → ____ KBr + ____ F2 b. ____ AlBr3 + ____ K2SO4 → ____ KBr + ____ Al2(SO4)3 c. ____ CH4 + ____ O2 → ____ CO2 + ____ H2O d. ____ Na3PO4 + ____ CaCl2 → ____ NaCl + ____ Ca3(PO4)2 e. ____H3PO4 → ____P4O10 + ____H2O f.
____ K + ____ Cl2 → ____ KCl
22. Write and then balance the chemical equations. a. sulfur + iron → iron(III) sulfide
c. water + potassium → hydrogen [H2] + potassium oxide
Learning Target
Classify a reaction as synthesis, decomposition, single-displacement, double-displacement or combustion. 23. Classify the equations in problems 2 or 3 as synthesis [S], decomposition [D], single-replacement [SR], double-replacement [DR], or combustion [C]. 2
Learning Target Predict the products of a synthesis reaction and write the balanced equation. 24. Write balanced chemical equations for the synthesis reactions that occur between the following elements. a. sodium + phosphorus b. calcium + oxygen [O2] Learning Target
Predict the products of a combustion reaction and write the balanced equation.
25. Write balanced equations for the combustion of the following hydrocarbons. a. combustion of propane - C3H8 b. combustion of pentyne - C5H8 Learning Targets
Use the activity series to predict whether a single-displacement reaction will occur. Write balanced equations for single-replacement reactions predicted to occur. 26. Use the activity series provided to predict the products in the following reactions. If no reaction will occur, write ‘NR’ on the products side. For reactions that will occur, write balanced chemical equations. a. _____Al + _____AgNO3 → b. _____Cu + _____KNO3 → c. _____Mg + _____HNO3 → d. _____Ca + _____Pb(NO3)2 → e. _____Na + _____Cu(NO3)2 →
Learning Targets
Predict whether a double-replacement reaction will occur based on solubility rules. Write balanced equations for double-replacement reactions predicted to occur. 27. First, predict whether the following reactions will occur. For those that will not occur, write ‘NR’ on the products side. For the reactions that will occur, write balanced chemical equations. You must indicate which product is the solid. a. _____Ca(NO3)2 (aq) + _____Na2CO3 (aq) → b. _____K3PO4 (aq) + _____Mg(NO3)2 (aq) → c. _____NaOH (aq) + _____K2SO4 (aq) → d. _____AlCl3 (aq) + _____Pb(NO3)2 (aq) → e. _____MgSO4 (aq) + _____NaCl (aq) →
