2CH_(2)+3O_(2)arrow 2CO_(2)+2H_(2)O 1. Given the balanced chemical reaction above, which represents the reactants of the chemical reaction? a. CO_(2) and H_(2)O b. CH_(2)andO_(2) C. CH_(2)andH_(2)O d. CO_(2) and O_(2) 2. The chemical equation above is an example of a a. combustion reaction b. double replacement reaction C. decomposition reaction d. synthesis reaction 3. Given the balanced chemical reaction above, which represents the products of the chemical reaction? a. CO_(2) and O_(2) b. CH_(2) and H_(2)O C. CO_(2) and H_(2)O d. CH_(2) and O_(2) 4. Determine the total number of atoms on the reactant side of the reaction. a. 9 b. 12 C. 10 d. 5 5. Determine the total amount of oxygen atoms present on the product side of the reaction. a. 3 b. 5 C. 6 d. 4 6. What is the coefficient for water when balanced? underline ( )As(OH)_(3)+underline ( )H_(2)SO_(4)arrow underline ( )As_(2)(SO_(4))_(3)+underline ( )H_(2)O a. 1 b. 2 C. 4 d. 6 7. Classify the following reaction: 2Al+3Br_(2)arrow 2AlBr_(3) a. decomposition b. single replacement C. combustion d. synthesis

1. The reactants of the chemical reaction are the substances that are present before the reaction takes place. In the given balanced chemical reaction, the reactants are $CH_{2}$ and $O_{2}$. Therefore, the correct answer is b. $CH_{2}$ and $O_{2}$.<br /><br />2. The given chemical equation represents a combustion reaction. In a combustion reaction, a hydrocarbon (in this case, $CH_{2}$) reacts with oxygen ($O_{2}$) to produce carbon dioxide ($CO_{2}$) and water ($H_{2}O$). Therefore, the correct answer is a. combustion reaction.<br /><br />3. The products of the chemical reaction are the substances that are formed as a result of the reaction. In the given balanced chemical reaction, the products are $CO_{2}$ and $H_{2}O$. Therefore, the correct answer is c. $CO_{2}$ and $H_{2}O$.<br /><br />4. To determine the total number of atoms on the reactant side of the reaction, we need to count the number of atoms of each element in the reactants. In the given balanced chemical reaction, there are 2 carbon atoms, 4 hydrogen atoms, and 6 oxygen atoms on the reactant side. Therefore, the total number of atoms on the reactant side is 12. The correct answer is b. 12.<br /><br />5. To determine the total amount of oxygen atoms present on the product side of the reaction, we need to count the number of oxygen atoms in the products. In the given balanced chemical reaction, there are 2 oxygen atoms in $CO_{2}$ and 2 oxygen atoms in $H_{2}O$, making a total of 4 oxygen atoms. Therefore, the correct answer is c. 4.<br /><br />6. In the given chemical equation, the coefficient for water ($H_{2}O$) is 6. Therefore, the correct answer is d. 6.<br /><br />7. The given reaction is a synthesis reaction. In a synthesis reaction, two or more substances combine to form a single product. In this case, aluminum ($Al$) and bromine ($Br_{2}$) combine to form aluminum bromide ($AlBr_{3}$). Therefore, the correct answer is d. synthesis.