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Basic Chemical Reactions and Types - A Self-Test and Review of Basic Chemical Reaction Concepts
© Donald Reinhardt, January 13, 2015  
 

Here you will find a chemistry test on basic chemical reactions and concepts. Have fun and learn. Answer key will be provided.

Instructions: Choose the best answer from the available choices. Note that in some cases more than one response is asked for. Relax, think carefully and enjoy responding to what you learned and know.

1.  Two elements are added together in known, measured amounts. A scientist heats them up for 10 minutes and analyzes them, and finds by another analysis and further tests that the exact same amounts of each element with the exact same properties exist. What has happened?

A. a slow chemical reaction   B. a very quick chemical reaction   C. no chemical reaction   D. no one knows, it is a mystery

2. pH is a true measure of what TWO of these 4 choices (Circle Two)?

A. electrons B. hydrogen ions C. neutrons D. protons

3. Two students are arguing about chemistry.

A. Student argues that combustion is not a form of oxidation.  

B. student argues that combustion is a form of oxidation.

Which student is correct? A or B?

4. The bright shiny material used to wrap and cover food dishes today is correctly known as:

A. aluminum foil   B. tin foil   C. steel foil

5. The foils named above are: A. metals B. non-metals

6. Magnetics usually are attracted and can bind to: 

A. metals  B. non-metals c. both A and B

D. none of the above choices are correct

7. Fe+++ -----> Fe++. 

This is:  A. oxidation  B. reduction

8. Cu+ ----> Cu++.      

This is:   A. oxidation   B. reduction

9. CH2=CH2 + H2 ----> CH3-CH3    

This is:   A. oxidation   B. reduction

10.  What is this an example of?   

H2O + electric current -------->H2+ O2  

A. electrolysis  B. electroplating  

C. electrophoresis

11. The above reaction in question 10 is an example of: 

A. synthesis   B. single displacement   C. double replacement   D. decomposition

12. – 20.  Use this Key to answer the questions which follow. Choose the best single answer of what you know or expect:

A. synthesis   

B. single displacement   

C. double replacement   

D. decomposition  

E. combustion or oxidation-reduction

12. A match is struck and ignites.

13.  A strong mineral acid and a strong mineral base are mixed together and a reaction known as what occurs?

14.  Hydrogen peroxide is placed in strong light and heat. What usually happens?

15.  H2 reacts and yields --->

 H2O + light + heat

16. 2H2O2 -----------> 2H2O + O2

17.  Na + H2O ------> NaOH + H2

18. NaOH + HCl----> NaCl + HOH

19. Mg + H2O-------> MgOH

20.  C + O ------------> CO

21. Baking sodium is added to lemon juice and bubbles appear. What are the bubbles?

A. CO B. CO2  C. O2  D. N2 

22. – 30. Key for these questions: A. exothermic B. endothermic

22. A reaction which produces light and heat.

23. Photosynthesis in plants would be an example of what type reaction?

24. Glucose + Glucose ------> Maltose ------->Starch

25. You turn the ignition switch on the car and the motor starts up and you drive off. What reaction is taking place?

26. An electric current run is through positive and negative electrodes immersed in water. A reaction occurs typically and this is an example of a reaction that what?

27.  Which reaction is always used to drive or cause other reactions to occur? 

A. Exothermic  B. Endothermic

28. A common way to extinguish a fire is to use: A. CO  B. CO2 C. CH4  D. C6H12O6

29. A simple spark may cause a giant explosive reaction. A. True   B. False C. We don’t know for sure

30. Chemical Reactions are reversible   

A. sometimes   B. always  C. never