Biology Chapter 6: Carbohydrates, Lipids, and Proteins
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Questions and Answers

What is the equivalent of 1 atmosphere in pascals?

  • 76 cm Hg
  • 760 mm Hg
  • 101325 Pa (correct)
  • 14.6956 psi

What is the equivalent of 1 Liter in cubic decimeters?

  • 1000 L
  • 1000 m3
  • 1000 cm3
  • 1 dm3 (correct)

What is the temperature in Kelvin of 0°C?

  • 273.15 K (correct)
  • 0°C
  • 100°C
  • 32°F

What is the objective of Activity 2: Boyle’s Law?

<p>Investigate the relationship between volume and pressure of gases at constant temperature (C)</p> Signup and view all the answers

What is the purpose of sealing the opening of the syringe with melted glue in Activity 2?

<p>To prevent air from escaping the syringe (D)</p> Signup and view all the answers

What is the initial volume of air in the syringe in Activity 2?

<p>25.0 mL (A)</p> Signup and view all the answers

What is the main topic covered in Unit 4?

<p>Matter and Its Interactions (D)</p> Signup and view all the answers

What is the purpose of keeping the inflated balloon in Procedure D?

<p>To compare the mass of the inflated and deflated balloon (B)</p> Signup and view all the answers

What was introduced in Grade 9 in relation to substances?

<p>Basic Mole Concept (C)</p> Signup and view all the answers

What is the main focus of Activity 1?

<p>Testing for Carbohydrates and Lipids (B)</p> Signup and view all the answers

What is the main purpose of the experiment in Procedure B?

<p>To introduce air in the water-oil mixture and measure the volume change (C)</p> Signup and view all the answers

What is the recommended volume of water to be used in the graduated cylinder in Procedure B?

<p>50.0 mL (A)</p> Signup and view all the answers

What is the purpose of the Summary/Synthesis/Feedback section?

<p>To provide a summary of the unit (C)</p> Signup and view all the answers

What is the purpose of covering the water with cooking oil in Procedure B?

<p>To separate the water and oil mixture (B)</p> Signup and view all the answers

What is protected by copyright in this material?

<p>The entire material (B)</p> Signup and view all the answers

In which year was the first edition of this material published?

<p>2015 (C)</p> Signup and view all the answers

What is the alternative to using a pipette in Procedure B?

<p>A syringe (B)</p> Signup and view all the answers

How many trials are recommended to be performed in Procedure B?

<p>3 trials (C)</p> Signup and view all the answers

What is the purpose of lubricating the thermometer with grease?

<p>To facilitate the insertion of the thermometer into the stopper (C)</p> Signup and view all the answers

What is the main objective of the experiment?

<p>To investigate the relationship between temperature and pressure at constant volume (B)</p> Signup and view all the answers

What precaution should be taken when holding the thermometer?

<p>Carefully hold the thermometer to avoid breakage (A)</p> Signup and view all the answers

How many minutes should the Erlenmeyer flask be shaken?

<p>2 minutes (D)</p> Signup and view all the answers

What is the purpose of using denatured alcohol in the experiment?

<p>To create a gas that can be used to study pressure (A)</p> Signup and view all the answers

What is recorded in the experiment?

<p>The temperature of the denatured alcohol (C)</p> Signup and view all the answers

What is the temperature required to reduce the volume of a gas from 5.0L to 3.0L, given that the initial pressure is 2000psi and the final pressure is 1500psi?

<p>134K (A)</p> Signup and view all the answers

What is the volume of a gas at -20.0°C and 500.0 mmHg, given that its volume at 27°C and 700.0 mmHg is 600.0 mL?

<p>400.0 mL (D)</p> Signup and view all the answers

What is the pressure exerted by a 2.5 L of nitrogen gas at 473 K, given that it exerts a pressure of 760 mmHg at 473 K?

<p>760 mmHg (D)</p> Signup and view all the answers

What is the definition of a mole in chemistry?

<p>A quantity of a substance that contains as many particles as there are atoms in 0.012 kilogram of carbon-12 (B)</p> Signup and view all the answers

Who is credited with making important contributions to reaction stoichiometry in the nineteenth century?

<p>Lorenzo Romano Amedeo Carlo Avogadro (B)</p> Signup and view all the answers

What is the relationship between the amount of gas in a mole and its volume?

<p>The amount of gas in a mole is directly proportional to its volume (B)</p> Signup and view all the answers

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