Chapter_3_Test_Review (1)

Chapter_3_Test_Review (1) - Name Hour Date Chapter 3 Test...

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Hour __________ Date ________________ Chapter 3 Test Review 1. What is the most abundant element on the earth (including the crust, oceans, and atmosphere)? a. silicon b. oxygen c. hydrogen d. carbon 2. What is the most abundant element found in the human body? a. carbon b. hydrogen c. calcium d. oxygen 3. How many of the following did Dalton not discuss in his atomic theory? isotopes ions protons electrons neutrons a. 1 b. 2 c. 3 d. 4 e. 5 4. The law of constant composition applies to a. metals b. metalloids c. homogeneous mixtures d. compounds 5. A substance composed of two or more elements combined chemically in a fixed proportion by mass is a. a compound b. a mixture c. an atom d. a solid 6. The fundamental “particle” of a chemical element according to Dalton’s theory is the a. electron b. molecule c. atom d. compound 7. In chemistry, a formula is used to represent a. a compound b. an element c. a metal d. all of these 8. How many hydrogen atoms are indicated in the formula (NH 4 ) 2 C 8 H 4 O 2 ? a. 8 b. 12 c. 20 d. 24 9. The total number of oxygen atoms indicated by the formula Fe 2 (CO 3 ) 3 is a. 3 b. 6 c. 9 d. 12 10. How many atoms of hydrogen are in one molecule of CH 3 Cl? a. 6 b. 6 x 10 23 c. 3 d. 30 x 10 23 11. How many atoms are represented by one formula unit of aluminum dichromate, Al 2 (Cr 2 O 7 ) 3 ? a. 14 b. 25 c. 27 d. 29 12. How many phosphorus atoms are represented by one formula unit of calcium phosphate, Ca 3 (PO 4 ) 3 ? a. 3 b. 6 c. 9 d. 12 13. The total number of atoms indicated by the formula Ca 3 (PO 4 ) 3 is a. 6 b. 10 c. 16 d. 18 14. How many nitrogen atoms are indicated by the formula Al(NO 3 ) 3 ? a.
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This note was uploaded on 10/05/2011 for the course CHEM 1403 taught by Professor Chen during the Spring '11 term at St. Mary NE.

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Chapter_3_Test_Review (1) - Name Hour Date Chapter 3 Test...

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