Chapter 8 - Chemical Reactivity

Chemical Reactivity

Quiz

 

1. What is chemical reactivity?
   
   1.   The ability of a substance to undergo a chemical change
   2.   The physical state of a substance
   3.   The color of a substance
   4.   The density of a substance
2. Which of the following factors does not affect the rate of a chemical reaction?
   1.   Temperature
   2.   Concentration of reactants
   3.   Presence of a catalyst
   4.   Color of reactants
3. In a chemical reaction, a substance that increases the rate of the reaction without being consumed is called a:
   
   1.   Reactant
   2.   Product
   3.   Catalyst
   4.   Inhibitor
4. 
   Which of the following is a sign of a chemical reaction?
   
   1.   Change in color
   2.   Change in temperature
   3.   Formation of a precipitate
   4.   All of the above
5. When magnesium reacts with hydrochloric acid, which gas is produced?
   1.   Oxygen
   2.   Hydrogen
   3.   Carbon dioxide
   4.   Nitrogen
6. The reactivity of metals with acids can be observed in which of the following series?
   1.   Reactivity series
   2.   Periodic table
   3.   Electronegativity series
   4.   None of the above
7. Which of the following elements is the most reactive?
   
   1.   Sodium
   2.   Magnesium
   3.   Potassium
   4.   Calcium
8. Which type of chemical reaction involves the breaking down of a compound into two or more simpler substances?
   
   1.   Synthesis reaction
   2.   Decomposition reaction
   3.   Single displacement reaction
   4.   Double displacement reaction
9. A reaction in which heat is released to the surroundings is called:
   1.   Endothermic reaction
   2.   Exothermic reaction
   3.   Neutralization reaction
   4.   Precipitation reaction
10. In the reactivity series, which metal is less reactive than zinc but more reactive than copper?
    1.   Iron
    2.   Silver
    3.   Lead
    4.   Aluminum