You were tasked to check if the liquid sample you have is a substance or a mixture.Which among these tasks is the BEST way to do so?Color comparisonTaste comparisonBoiling TestMelting Test1.I.II.IV.C. I, Il and IV onlyD. II and IV onlyA. I, II, III, IVB. I, II and III only2. A liquid has the following properties: one-phase, colorless, boils at varyingtemperature. Which of the following BEST describes the liquid?A. solutionB. substanceC. suspensionD. heterogeneous mixtureJill has an unopened box of a 2-meter foil labeled as 100% aluminum. Jill takes just athumb-sized piece of the aluminum foil. Which of the following statement is TRUEabout the piece of aluminum foil that Jill took compared with the rest that was left in thebox?3.A. Its mass and melting behavior are different.B. Its mass and melting behavior are the same.C. The mass is different, but the melting behavior is the same.D. The mass is the same, but the melting behavior is different.4. Which of the following lists of materials are composed of mixture?A. blood, calamansi juice, airB. carbon dioxide, bleach, oil5. A pinch of bread was placed inside a test-tube and heated until it became blackish incolor and released some gas. Which of the following statements are TRUE accordingto the given information?C. oxygen, sodium chloride, waterD. vinegar, 70% alcohol, carbon1. Bread is a solution.II. Bread is composed of only one substance.III. Bread is made up of solid and gaseous substance.IV. Bread is consisting of mixtures of different substance.A. Iand II6. A gaseous material has a strong smell, evaporates quickly, particularly boils at33.34°C and melts at-77.73°C. What is the classification of the material?A. metal7. Oliver heated a liquid ina casserole. He forgot to tum off the stove right away and theliquid was gone. He noticed that there were some solid materials which settled at thsurface of the casserole. What can be inferred from this observation? The liquiB. Il and IIC. Il and IVD. III and IVB. mixtureC. solutionD. pure substancewasA. a pure substanceB. composed of a single material8. Sodium chloride dissolves in water very well. Which is NOT TRUE in the followingstatements?A. Water is a pure substance.B. Sodium chloride is a pure substance.C. Dissolving sodium chloride with water produces a mixture.D. Dissolving sodium chloride with water produces a new substance.C. a mixture with dissolved solid materialsD. a pure substance because it evaporated

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Tou were tasked to check if the liquid sample you have is a substance or a mixture Which among these tasks is the BEST way to do so? Color comparison Taste comparison Boiling Test Melting Test I. II. II. IV. A. I, II, II, IV B. I, Il and Il only C. I, Il and IV only D. II and IV only arties: one-nhase, colorless, boils at varying

Tou were tasked to check if the liquid sample you have is a substance or a mixture Which among these tasks is the BEST way to do so? Color comparison Taste comparison Boiling Test Melting Test I. II. II. IV. A. I, II, II, IV B. I, Il and Il only C. I, Il and IV only D. II and IV only arties: one-nhase, colorless, boils at varying

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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1. A manufacturing company is interested in knowing how much protein is present in their new protein bar. As part of their science and research team, what kind of analysis should you do? a. Qualitative analysis b. Quantitative analysis c. Characterization analysis d. Fundamental analysis 2. Presence of aluminum sulfate (alum) is a common thing to purify water; however, it can clog up pipelines. To determine how many aluminum sulfates are present in the water, what kind of analysis is needed? a) Qualitative analysis b) Quantitative analysis c) Characterization analysis d) Fundamental analysis 3. Predict the shift in the following equilibrium system from the following changes N2 (g) + 3 H2 (g) ⇌ N2H4 (g) ΔH = 92.5 kJ a. Favors the reactant side b. Favors the product side c. No shifting occurred a) When the volume increases? b) When a catalyst is added? c) When vessel is compressed? d) When temperature of the system is decreased?
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a. 0.002 b. 0.70 c. 0.73 d. 0.018 e. 0.80
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