1. Chemistry I Unit 5B Pretest Ray Tedder NBC Chemistry Teacher

2. Unit 5B Pretest Review Chemical equation: C 2 H 5 OH(l)+3O 2 (g)  2CO 2 (g)+3H 2 O(g) ABC form or appropriate identifications: Hydrocarbon fuel Atmospheric oxygen Carbon dioxide Steam 1. Label the ABC form or appropriate chemical label that applies to the following equation. 2. What is the classification of the equation above? __Combustion reaction___

3. Unit 5B Pretest Review Chemical equation: 2NH 4 NO 3 (aq) → N 2 (g) + O 2 (g) +4H 2 O(l) ABC form or appropriate identifications: A B C A B C 3. Label the ABC form or appropriate chemical label that applies to the following equation. 4. What is the classification of the equation above? __ Decomposition reaction ___

4. Unit 5B Pretest Review Chemical equation: Zn(s)+2HCl(aq)  ZnCl 2 (aq)+H 2 (g) ABC form or appropriate identifications: A B C A C B 5. Label the ABC form or appropriate chemical label that applies to the following equation. 6. What is the classification of the equation above? __ Single replacement reaction ___

5. Unit 5B Pretest Review Chemical equation: 3Hg(OH) 2 (s)+2H 3 PO 4 (aq)  Hg 3 (PO 4 ) 2 (aq)+6HOH(l) ABC form or appropriate identifications: A B C D A D C B 7. Label the ABC form or appropriate chemical label that applies to the following equation. 8. What is the classification of the equation above? __ Double replacement reaction ___

6. Unit 5B Pretest Review Chemical equation: N 2 (g)+O 2 (g)+H 2 O(l)  HNO 3 (aq) ABC form or appropriate identifications: A B C A B C 9. Label the ABC form or appropriate chemical label that applies to the following equation. 10. What is the classification of the equation above? __ Synthesis reaction ___

7. Unit 5B Pretest Review 11. Explain how to identify a decomposition reaction. The separation of a chemical compound into elements or simpler compounds. 12. Explain how to identify a synthesis reaction. When two or more chemical reactants combine to form a single chemical product. 13. Explain how to identify a combustion reaction. A chemical reaction between a hydrocarbon fuel (C x H y ) and atmospheric oxygen (O 2 ) product which produces carbon dioxide gas and steam.

8. Unit 5B Pretest Review 14. Explain how to identify a single replacement reaction. A chemical reaction between an element or elemental compound which replaces an ion in a compound. The ion in the compound has the same elemental classification as the element or elemental compound that replaces it. 15. Explain how to identify a double replacement reaction. A chemical reaction between 2, two-part compounds which switch parts. The front part always becomes the front part of another compound. The back part always becomes the back part of another compound.

9. End