Chemical Equations And Reactions

16 Questions | By Stephanie_earhar | Last updated: Mar 20, 2022 | Total Attempts: 247

Questions

Settings

Create your own Quiz

This quiz is a review for the unit exam. If you do well on this, you will pass the exam.

Questions and Answers

1.

Write the balanced equation: Sodium hydroxide and chlorine gas yields sodium chloride, sodium hypochlorite, and water.
2.

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
3.

Which equation represents a precipitation reaction?
- A.
  
  Equation A
- B.
  
  Equation B
- C.
  
  Equation C
- D.
  
  Equation D
4.

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
5.

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
6.

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
7.

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
8.

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
9.

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
10.

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
11.

Predict the products of this reaction.
- A.
  
  Na2CO3
- B.
  
  Na + CO3
- C.
  
  NaCO2 + O2
- D.
  
  NaC + O3
12.

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
13.

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
14.

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
15.

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.
16.

Which equation represents a neutralization reaction?
- A.
  
  Equation A
- B.
  
  Equation B
- C.
  
  Equation C
- D.
  
  Equation D