Chemical Equations And Reactions
This quiz is a review for the unit exam. If you do well on this, you will pass the exam.
- 1.After the correct formula for a reactant in an equation has been written, the -
- A.
Chemical formula cannot be altered
- B.
Subscripts of the formula are changed to balance the equation
- C.
Chemical symbols in the formula must appear only on the reactant side
- D.
Same chemical formula must be written on the product side of the equation
- 2.
![Which equation represents a precipitation reaction? - ProProfs]( "Which equation represents a precipitation reaction?")
Which equation represents a precipitation reaction?- A.
Equation A
- B.
Equation B
- C.
Equation C
- D.
Equation D
- 3.Which of the following reactions involves two or more substances combining to form a new compound?
- A.
Single-replacement reaction
- B.
Synthesis reaction
- C.
Decomposition reaction
- D.
Combustion reaction
- 4.Which of the following reactions involves one element replacing an element in a compound that is from the same activity series?
- A.
Combustion reaction
- B.
Decomposition reaction
- C.
Single-replacement reaction
- D.
Double-replacement reaction
- 5.Which of the following reactions involves the ions of two compounds exchanging places to form two new compounds?
- A.
Synthesis reaction
- B.
Single-replacement reaction
- C.
Double-replacement reaction
- D.
Combustion reaction
- 6.Which of the following reactions involves a single compound producing two or more simpler substances?
- A.
Synthesis reaction
- B.
Decomposition reaction
- C.
Combustion reaction
- D.
Double-replacement reaction
- 7.
![By predicting the outcome of the following reactants mixing together in an aqueous solution, what type of reaction will take place? - ProProfs]( "By predicting the outcome of the following reactants mixing together in an aqueous solution, what type of reaction will take place?")
By predicting the outcome of the following reactants mixing together in an aqueous solution, what type of reaction will take place?- A.
Double-replacement reaction
- B.
Synthesis reaction
- C.
Decomposition reaction
- D.
Single-replacement
- 8.When an acid decomposes, what are the products?
- A.
Non-metal oxides and a salt
- B.
Non-metal oxides and water
- C.
Metal oxides and oxygen
- D.
Metal oxides and peroxide
- 9.Predict the outcome of the reaction where zinc metal is added to a solution of potassium chloride.
- A.
No reaction occurs
- B.
Gaseous zinc is formed
- C.
Potassium calcide forms
- D.
Zinc chloride forms
- 10.
![Predict the products of this reaction. - ProProfs]( "Predict the products of this reaction.")
Predict the products of this reaction.- A.
Na2CO3
- B.
Na + CO3
- C.
NaCO2 + O2
- D.
NaC + O3
- 11.
![Which coefficients are required to correctly balance the equation? - ProProfs]( "Which coefficients are required to correctly balance the equation?")
Which coefficients are required to correctly balance the equation?- A.
1,2,3,2
- B.
2,5,4,2
- C.
2,4,5,2
- D.
2,3,5,2
- 12.According to the law of conservation of matter, the total mass of all the reacting substances is -
- A.
More than the mass of all the products
- B.
More than the total mass of all the products and reactants
- C.
Less than the total mass of all the products
- D.
Equal to the mass of all the products
- 13.A student performing an investigation of chemical reactions mixes two aqueous solutions and observes a change in color. Color change is most indicative of which type of chemical reaction?
- A.
Neutralization
- B.
Precipitation
- C.
Oxidation-reduction
- D.
Acid-base
- 14.What would you observe during a precipitation reaction?
- A.
Gas bubbles are produced.
- B.
A solid settles out.
- C.
There is a color change.
- D.
The test tube warms.
- 15.
![Which equation represents a neutralization reaction? - ProProfs]( "Which equation represents a neutralization reaction?")
Which equation represents a neutralization reaction?- A.
Equation A
- B.
Equation B
- C.
Equation C
- D.
Equation D
- 16.Write the balanced equation: Sodium hydroxide and chlorine gas yields sodium chloride, sodium hypochlorite, and water.
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