1. Ch. 1 Test – Self Review Honors Chemistry Mrs. Klingaman

2. Match the statements a.Precision b.Accuracy c.Distillation d.Chromatography e.Filtration 1._____Separates a homogeneous solution based on differences in boiling points 2._____Several measurements close to one another 3._____Separates a mixture based on differences in solubility 4._____Measurements close t the true or accepted value 5._____Separates solid & liquid mixture based on particle size

3. Match the statements a.Precision b.Accuracy c.Distillation d.Chromatography e.Filtration 1.__C__Separates a homogeneous solution based on differences in boiling points 2.__A__Several measurements close to one another 3.__D__Separates a mixture based on differences in solubility 4.__B__Measurements close t the true or accepted value 5.__E__Separates solid & liquid mixture based on particle size

4. Measurements & Data State whether the following data is intensive or extensive and whether it is quantitative or qualitative: 1)The chlorine gas is green in color. 2)The density of the substance is 1.33 g/mL 3) The volume of the helium gas is 23 cm 3

5. Measurements & Data State whether the following data is intensive or extensive and whether it is quantitative or qualitative: 1)The chlorine gas is green in color. intensive & qualitative 2) The density of the substance is 1.33 g/mL intensive & quantitative 3)The volume of the helium gas is 23 cm 3 extensive & quantitative

6. States of Matter Describe each of the three states of matter. Be sure to include a description of if they each have definite or indefinate shapes & volumes, state a distinguishing properties for each, and give 1 elemental example of each.

7. States of Matter Describe each of the three states of matter. Be sure to include a description of if they each have definite or indefinate shapes & volumes, state a distinguishing properties for each, and give 1 elemental example of each. Solid – definite shape & volume, partciles are closely packed in ridged order & not compressible, example = iron Liquid – indefinate shape & definite volume, particles close together & can flow, example = mercury or bromine Gas – indefinite shape & volume, fills the volume of its container & particles very far apart, example = neon

8. Measurements & Data State whether the following scenarios represent high accuracy and high precision, low accuracy & high precision, or low accuracy and low precision. 1)Three volume measurements of a 4.2 mL give the following results: 2.2 mL, 3.2 mL, and 6.6 mL. 2)The density of water at room temperature is calculated to be 1.003 g/mL, 0.999 g/mL, and 1.001 g/mL. 3)The mass of a paper clip (actually 1.2 g) is found to be 0.55 g, 0.57 g, and 0.52 g.

9. Measurements & Data State whether the following scenarios represent high accuracy and high precision, low accuracy & high precision, or low accuracy and low precision. 1)Three volume measurements of a 4.2 mL give the following results: 2.2 mL, 3.2 mL, and 6.6 mL. low accuracy & low precision 1)The density of water at room temperature is calculated to be 1.003 g/mL, 0.999 g/mL, and 1.001 g/mL. high accuracy & high precision 3)The mass of a paper clip (actually 1.2 g) is found to be 0.55 g, 0.57 g, and 0.52 g. low accuracy & high precision

10. Metric Conversions: (set them up w/dimensional analysis) 1. 100 mm = ____________ dm 2.15.0 cm = _____________ km 3.0.65 km = _____________ m 4.134,076 nm = ______________ m Temperature Conversion: 1. 15.6 ºC = ______________ K

11. Answers: 1.100 mm = 1 dm 2.15.0 cm = 1.50 x 10 -4 km 3.0.65 km = 650 m 4.134,076 nm = 1.34076 x 10 -4 m Temperature Conversion: 1. 15.6 ºC = 288.6 K

12. Significant Figures/ Scientific Notation Identify the # of significant figures and rewrite in scientific notation. 1.160000 2.160700 3.0.000167 4.160.0 5.0.0160

13. Answers: Identify the # of significant figures and rewrite in scientific notation. 1.160000 (2) 1.6 x 10 5 2.160700 (4) 1.607 x 10 5 3.0.000167 (3) 1.67 x 10 -4 4.160.0 (4) 1.600 x 10 2 5.0.0160 ( 3) 1.60 x 10 -2

14. Complete the following problems using Sig. Figs. 1. 103.36 + 12.097 + 11 = 2.24.5 x 0.25 x 100.1 = 3.(76.2 x 15) = 4

15. Answers: 1.103.36 + 12.097 + 11 = 126 ( 0 deci. places) 2.24.5 x 0.25 x 100.1 = 610 (2 sig. figs) 3.(76.2 x 15) = 300 (1 sig. fig) 4

16. Use Dimensional Analysis and sig. figs to solve the following: 1.If the average student walks 3.63 miles around the school in a day, how many kilometers is this? 2.A piece of magnesium with a density of 1.74 g/cm 3 is found to have a volume of 15,600 µ L. What is the mass of this piece of Mg?

17. Use Dimensional Analysis and sig. figs to solve the following: 1.If the average student walks 3.63 miles around the school in a day, how many kilometers is this? 3.63 mi 5280 ft 12 in 2.54 cm 1m 1km = 5.84 km 1 mi 1 ft 1 in 100 cm 1000 m 1.A piece of magnesium with a density of 1.74 g/cm 3 is found to have a volume of 15,600 µ L. What is the mass of this piece of Mg? 1.74 g 1 cm 3 1000 mL 1 L 15,600 µ L = 27.1 g 1 cm 3 1 mL 1 L 10 6 µ L