Chapter 02 The Chemistry of Life

Chapter 02  The Chemistry of Life

True / False Questions

1. Minerals are organic elements extracted from the soil by plants.

   FALSE

2. Molecules composed of two or more atoms are called compounds.

   FALSE

   Accessibility: Keyboard Navigation Blooms Level: 3. Apply Gradable: automatic HAPS Objective: C01.03 Compare and contrast the terms atoms, molecules, elements, and compounds. HAPS Topic: Module C01 Atoms and molecules. Learning Outcome: 02.01b Distinguish between elements and compounds. Section: 02.01 Topic: Atoms and molecules

3. Hydrogen, deuterium, and tritium are three isotopes of hydrogen.

   TRUE

   Accessibility: Keyboard Navigation Blooms Level: 1. Remember Gradable: automatic

HAPS Objective: C01.01c Explain how ions and isotopes are produced by changing the relative number of specific subatomic particles with respect to the structure of an atom. HAPS Topic: Module C01 Atoms and molecules. Learning Outcome: 02.01d Explain the basis for radioactivity and the types and hazards of ionizing radiation. Section: 02.01 Topic: Atoms and molecules

Accessibility: Keyboard Navigation Blooms Level: 1. Remember Gradable: automatic HAPS Objective: O01.01e List the important dietary minerals and describe the major uses of each mineral in the body. HAPS Topic: Module O01 Nutrition. Learning Outcome: 02.01c State the functions of minerals in the body. Section: 02.01 Topic: Atoms and molecules

4.

Potassium, sodium, and chlorine are trace elements.

FALSE

Accessibility: Keyboard Navigation Blooms Level: 1. Remember Gradable: automatic HAPS Objective: C01.03 Compare and contrast the terms atoms, molecules, elements, and compounds. HAPS Topic: Module C01 Atoms and molecules. Learning Outcome: 02.01b Distinguish between elements and compounds. Section: 02.01 Topic: Atoms and molecules

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Copyright © 2018 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education.

5. Ionic bonds break apart in water more easily than covalent bonds do.

TRUE

Accessibility: Keyboard Navigation Blooms Level: 2. Understand Gradable: automatic HAPS Objective: C02.01a List each type of bond in order by relative strength with respect to non-polar covalent, polar covalent, ionic, and hydrogen bonds. HAPS Topic: Module C02 Chemical bonding. Learning Outcome: 02.01f Define the types of chemical bonds. Section: 02.01 Topic: Chemical bonding

6. A solution is a mixture of two or more substances that are physically blended but not chemically combined.

   TRUE

   Accessibility: Keyboard Navigation Blooms Level: 2. Understand Gradable: automatic HAPS Objective: C03.02 Distinguish among the terms solution, solute, solvent, colloid suspension, and emulsion. HAPS Topic: Module C03 Inorganic compounds and solutions. Learning Outcome: 02.02c Show how three kinds of mixtures differ from each other. Section: 02.02 Topic: Inorganic compounds and solutions

7. The pH of blood plasma is approximately 7.4, which is slightly acidic.

   FALSE

   Accessibility: Keyboard Navigation Blooms Level: 1. Remember Gradable: automatic HAPS Objective: C03.05 State acidic, neutral, and alkaline pH values. HAPS Topic: Module C03 Inorganic compounds and solutions. Learning Outcome: 02.02d Define acid and base and interpret the pH scale. Section: 02.02 Topic: Inorganic compounds and solutions

8. The high heat capacity of water makes it a very ineffective coolant.

   FALSE

   Accessibility: Keyboard Navigation Blooms Level: 2. Understand Gradable: automatic HAPS Objective: C03.01 Discuss the physiologically important properties of water. HAPS Topic: Module C03 Inorganic compounds and solutions. Learning Outcome: 02.02b Describe the biologically important properties of water. Section: 02.02 Topic: Inorganic compounds and solutions

9. In an exchange reaction, covalent bonds are broken and new covalent bonds are formed.

   TRUE

   Accessibility: Keyboard Navigation

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   Copyright © 2018 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education.