Final Review CHEMISTRY

Significant figures (#2)

a. 2 i. 4

b. 3 j. 3

c. 4 k. 2

d. 1 l. 1

e. 1 m. 3

f. 4 n. 3

g. 4

h. 2

Classifying substances (#6)

a. Pure substance (element) i. Heterogeneous mixture

b. Homogeneous mixture j. Homogeneous mixture

c. Homogeneous mixture k. Pure substance (element)

d. Heterogeneous mixture l. Homogeneous mixture

e. Compound

f. Pure substance (element)

g. Compound

h. Heterogeneous mixture

Density

D= m/vm=d*vV= m/D

D Vm

Place these liquids in order of increasing density:

Density (#7-9, 11-12)

#7: 5.3 g/cm3

#8: Sink because water has d=1.0 g/cm3

#9: 2.97 cm3

#11: 0.445 g/cm3

#12: 178.4 g

Dimensional Analysis (#10)

a. 4.45 x 108 mm

b. 8.8 x 10-5 kg

c. 9.92 x 10-1 L

d. 7.82 x 108 mg

e. 8.99 x 109 mm

f. 1.0 x 103 g

g. 2.5 x 106 mg

h. 5.0 x 10-2 m

i. 4.75 x 101 mm

j. 2.8 x 103 mL

k. 7.7 km/L

DO AS YOU

ADD ACID TO WATER

Name the lab equipment (#19)

Erlenmeyer flask

Graduated cylinder

Scale

Beaker

Volumetric flask

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

#25

a. X=15

b. X=47

c. X=Ti

d. X= I

Electron Orbital Diagram (#32)

a.

Average Atomic Mass

Nomenclature (#52)

Precision of a measuring instrument

Measure the leaf and screw to the correct number of decimal places.