Chapter 5: Quiz - Vocabulary-chemical Reactions (19 Terms)

19 Questions | By Pcooper | Updated: Mar 22, 2022 | Attempts: 609

Questions

Settings

Create your own Quiz

Chapter 5: Quiz - Vocabulary-chemical Reactions (19 Terms) - Quiz

VA SOLs: PS4c PS. 5a, c, PS6a, b, c

Questions and Answers

1.

What is a reaction in which one element replaces another in a compound, or in which two elements in a different compounds trade places?
- A.
  
  Synthesis
- B.
  
  Decomposition
- C.
  
  Inhibitor
- D.
  
  Replacement reaction
2.

What is a solid that forms from a solution during a chemical reaction?
- A.
  
  Concentration
- B.
  
  Catalyst
- C.
  
  Precipitate
- D.
  
  Product
3.

What is a chemcal reaction that breaks down a compound into simpler products? 2 H2O2 yields 2 H2O + O2 (could not use yields symbol, the arrow)
- A.
  
  Decomposition
- B.
  
  Activation energy
- C.
  
  Enzyme
- D.
  
  Fuel
4.

What is a chemical reaction in which two or more simple substances combine to form a new, more complex substance?
- A.
  
  Conservation of mass
- B.
  
  Synthesis
- C.
  
  Endothermic reaction
- D.
  
  Exothermic reaction
5.

What is a number placed in front of a chemical formula in an equation that indicates how many atoms or molecules of each reactant and product are involved in a reaction? What is the 2 in the formual? 2 CuO + C
- A.
  
  Product
- B.
  
  Subscript
- C.
  
  Reactant
- D.
  
  Coefficient
6.

What is the principle stating that matter is not created or desrtroyed during a chemical reaction?
- A.
  
  Synthesis
- B.
  
  Chemical equation
- C.
  
  Combustion
- D.
  
  Conservation of mass
7.

What is a biological catalyst that lowers the activation energy of reactions in cells?
- A.
  
  Enzyme
- B.
  
  Catalyst
- C.
  
  Fuel
- D.
  
  Subscript
8.

What is a material that increases the rate of a reaction by lowering the activation energy?
- A.
  
  Inhibitor
- B.
  
  Catalyst
- C.
  
  Decomposition
- D.
  
  Enzyme
9.

What is a material that decreases the rate of a reaction?
- A.
  
  Inhibitor
- B.
  
  Fuel
- C.
  
  Catalyst
- D.
  
  Precipitate
10.

What is the amount of energy dissolved in a given amount of another material?
- A.
  
  Concentration
- B.
  
  Coefficient
- C.
  
  Replacement reaction
- D.
  
  Inhibitor
11.

What is a rapid reaction between oxygen and fuel that produces thermal energy?
- A.
  
  Concentration
- B.
  
  Combustion
- C.
  
  Enzyme
- D.
  
  Fuel
12.

What is the material that releases energy when it burns?
- A.
  
  Chemical equation
- B.
  
  Exothermic reaction
- C.
  
  Fuel
- D.
  
  Endothermic reaction
13.

What is the minimum amount of energy needed to start a chemical reaction?
- A.
  
  Coefficient
- B.
  
  Reactant
- C.
  
  Activation energy
- D.
  
  Product
14.

What is a reaction that absorbs energy in the form of heat?
- A.
  
  Activation energy
- B.
  
  Replacement reaction
- C.
  
  Exothermic reaction
- D.
  
  Endothermic reaction
15.

What is the reaction that releases energy in the form of heat?
- A.
  
  Exothermic reaction
- B.
  
  Endothermic reaction
- C.
  
  Fuel
- D.
  
  Combustion
16.

What is the minimum amount of energy needed to start a chemical reaction?
- A.
  
  Activation energy
- B.
  
  Cata;yst
- C.
  
  Inhibitor
- D.
  
  Fuel
17.

What is a short, easy way to show a chemical reaction, using symbols instead of words?
- A.
  
  Products
- B.
  
  Chemical equation
- C.
  
  Subscript
- D.
  
  Coefficient
18.

What is a number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound? What is the number 4? Example: Mg + CuSO4
- A.
  
  Coefficient
- B.
  
  Subscript
- C.
  
  Catalyst
- D.
  
  Inhibitor
19.

endothermic reaction picturesWhat is a subtance that enters into a chemical reaction?
- A.
  
  Concentration
- B.
  
  Fuel
- C.
  
  Catalyst
- D.
  
  Reactant