1. Final Review CHEMISTRY

2. Significant figures (#2) a. 2i. 4 b. 3j. 3 c. 4k. 2 d. 1l. 1 e. 1m. 3 f. 4n. 3 g. 4 h. 2

3. Classifying substances (#6) a. Pure substance (element)i. Heterogeneous mixture b. Homogeneous mixturej. Homogeneous mixture c. Homogeneous mixturek. Pure substance (element) d. Heterogeneous mixturel. Homogeneous mixture e. Compound f. Pure substance (element) g. Compound h. Heterogeneous mixture

4. Density  D= m/v  m=d*v  V= m/D D V m

5. Place these liquids in order of increasing density:

6. Density (#7-9, 11-12)  #7: 5.3 g/cm 3  #8: Sink because water has d=1.0 g/cm 3  #9: 2.97 cm 3  #11: 0.445 g/cm 3  #12: 178.4 g

7. Dimensional Analysis (#10) a. 4.45 x 10 8 mm b. 8.8 x 10 -5 kg c. 9.92 x 10 -1 L d. 7.82 x 10 8 mg e. 8.99 x 10 9 mm f. 1.0 x 10 3 g g. 2.5 x 10 6 mg h. 5.0 x 10- 2 m i. 4.75 x 10 1 mm j. 2.8 x 10 3 mL k. 7.7 km/L

8. DO AS YOU ADD ACID TO WATER

9. Name the lab equipment (#19)  Erlenmeyer flask  Graduated cylinder  Scale  Beaker  Volumetric flask

10. Periodic Trends (#21-23)  #21:  O, S, Se, Te  Ar, Cl, S, P  Ca +2, K +, Cl -, S -2 #22: Te, Se, S, O P, S, Cl, Ar K, Ca, S, Cl #23: Te, Se, S, O P, S, Cl, Ar K, Ca, S, Cl

11. #25 a. X=15 b. X=47 c. X=Ti d. X= I

12. Electron Orbital Diagram (#32) a.

13. Average Atomic Mass

14. Nomenclature (#52)

15. Precision of a measuring instrument Measure the leaf and screw to the correct number of decimal places.