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Ch. 1 Test – Self Review

Ch. 1 Test – Self Review. Honors Chemistry Mrs. Klingaman. Match the statements. _____Separates a homogeneous solution based on differences in boiling points _____Several measurements close to one another _____Separates a mixture based on differences in solubility

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Ch. 1 Test – Self Review

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

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

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

  4. Measurements & Data State whether the following data is intensive or extensive and whether it is quantitative or qualitative: • The chlorine gas is green in color. • The density of the substance is 1.33 g/mL 3) The volume of the helium gas is 23 cm3

  5. Measurements & Data State whether the following data is intensive or extensive and whether it is quantitative or qualitative: • The chlorine gas is green in color. intensive & qualitative 2) The density of the substance is 1.33 g/mL intensive & quantitative • The volume of the helium gas is 23 cm3 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 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. • Three volume measurements of a 4.2 mL give the following results: 2.2 mL, 3.2 mL, and 6.6 mL. • The density of water at room temperature is calculated to be 1.003 g/mL, 0.999 g/mL, and 1.001 g/mL. • 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. • 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 • 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 • 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: • 100 mm = ____________ dm • 15.0 cm = _____________ km • .65 km = _____________ m • 15.6 ºC = ______________ K • 134,076 nm = ______________ m

  11. Answers: • 100 mm = 1 dm • 15.0 cm = 1.50 x 10-4 km • .65 Km = 650 m • 15.6 ºC = 288.6K • 134,076 nm = 0000 m

  12. Significant Figures/ Scientific Notation Identify the # of significant figures and rewrite in scientific notation. 160000 160700 .000167 160.0 .0160

  13. Answers: Identify the # of significant figures and rewrite in scientific notation. • 160000 (2) 1.6 x 105 • 160700 (4) 1.607 x 105 • .000167 (3) 1.67 x 10-4 • 160.0 (4) 1.600 x 102 • .0160 ( 3) 1.60 x 10-2

  14. Complete the following problems using Sig. Figs. • 103.36 + 12.097 + 11 = • 24.5 x 0.25 x 100.1 = • (76.2 x 15) = 4

  15. Answers: • 103.36 + 12.097 + 11 = 126 ( 0 deci. places) • 24.5 x 0.25 x 100.1 =610 (2 sig. figs) • (76.2 x 15) =300 (1 sig. fig) 4

  16. Use Dimensional Analysis and sig. figs to solve the following: • If the average student walks 3.63 miles around the school in a day, how many kilometers is this? • A piece of magnesium with a density of 1.74 g/cm3 is found to have a volume of 15,600 µL. What is the mass of this piece of Mg?

  17. Use Dimensional Analysis and sig. figs to solve the following: • 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 • A piece of magnesium with a density of 1.74 g/cm3 is found to have a volume of 15,600 µL. What is the mass of this piece of Mg? 1.74 g 1 cm3 1000 mL 1 L 15,600 µL = 27.1 g 1 cm3 1 mL 1 L 106µL

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