1. Reactions Unit Review Test has 17 questions. Mrs. Martin 2013-14

2. What are the four indicators of a chemical change? Significant Color change Formation of a precipitate Spontaneous change in energy (heat, light, sound) Formation of a gas (see bubbles or smell odor)

3. Identify the following as an element, compound, homogenous mixture, or heterogeneous mixture. Zn Orange Juice (w/ pulp) Brass (Cu & Zn) H 2 O N 2 Element Homogenous mixture Element CompoundHeterogeneous mixture

4. Balance the following equations! _______Al + _______ O 2  _______Al 2 O 3 _______ PH 3  _______ P 4 + _______ H 2 ____ Mg(NO 3 ) 2 + ____NaOH  ____Mg(OH) 2 + ____NaNO 3 324 46 2211 1

5. List the diatomic elements H 2 O 2 F 2 N 2 Cl 2 I 2 Br 2

6. Balance the reactions _____ Sb + _____ O 2 → _____ Sb 2 O 5 _____ SO 4 (g)  _____ O 2 (g) + _____ SO 2 (g) __ BaSO 4 + __ K 3 PO 4  __ Ba 3 (PO 4 ) 2 + __ K 2 SO 4 452 111 332 1

7. Determine if the picture shows an element, compound or mixture. Compound Element Mixture

8. What type of reaction is this? 2NaClO 3  2NaCl + 3O 2 Pb(NO 3 ) 2 + 2NaCl  PbCl 2 + 2NaNO 3 3Fe + 4H 2 O  Fe 3 O 4 + 4H 2 Decomposition double displacement single displacement

9. Balance the reaction ___ C 4 H 10 + ___ O 2  ___ CO 2 + ___ H 2 O __ FeCl 3 + __ (NH 4 ) 2 S  __ Fe 2 S 3 + __ NH 4 Cl 28 1013 3 216

10. What type of reaction… starts with a carbon hydrogen compounds and always creates carbon dioxide and water? ____________________ is like cutting in on a dancing couple when a single element replaces another element within a compound? ____________________ creates only 1 product? ____________________ combustion Single replacement synthesis

11. What type of reaction… has a single element displacing an element in a compound? ____________________ starts with one reactant? _______________ is like a square dance, with elements changing partners within compounds? ___________________ Single replacement decomposition Double replacement

12. What type of reaction is this? 2Na + F 2  2NaF 2C 6 H 14 (l) + 19O 2 (g)  14H 2 O(g) + 12CO 2 (g) Synthesis combustion

13. Which example shows a homogenous mixture? Which shows a heterogeneous mixture? Can of nuts and bolts Bottle of Powerade Heterogeneous Homogeneous

14. Please make sure your packet is ready to be handed in tomorrow at the beginning of class.