EBK HUMAN ANATOMY & PHYSIOLOGY
EBK HUMAN ANATOMY & PHYSIOLOGY
16th Edition
ISBN: 8220100659836
Author: AMERMAN
Publisher: PEARSON
Question
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Chapter 2, Problem 1CYR
Summary Introduction

To review:

Whether the following statements are true or false. False statements are to be corrected.

a. The mass number of an atom is the sum of its neutrons and the protons.

b. Electrons travel in orderly, circular orbits around the nucleus.

c. Protons and neutrons have a positive charge and the electrons have a negative charge.

d. Valence electrons are the electrons in the outermost shell of an atom.

e. Every element has a characteristic number of protons which is called the element's mass number.

Introduction:

The matter is basically defined as anything which has the mass and also occupies the space. It is widely studied in chemistry which is basically the study of matter and its interactions with the surrounding. The matter is made up of atoms and hence, atoms are known to be the tiniest unit of the matter which retains its original traits.

Expert Solution & Answer
Check Mark

Explanation of Solution

a. The given statement is true. Mass number refers to the total numbers of neutrons and protons found within the nucleus of an atom. This value is important in determining the atomic mass of atoms.

b. The given statement is true. Electrons revolve around the atomic nucleus and are known to be tiny and negatively charged particles. An atom looks like a miniature solar system, according to the classical atomic model, with the electrons moving in the circular orbits around the nucleus.

c. The given statement is false. Protons are positively charged, electrons are negatively charged, and neutrons do not have any charge. The charge on a proton and that on an electron are identical in terms of magnitude, but are opposite.

d. The given statement is true. Chemical bonds are made when the electrons are situated in the outermost electron shells of the atoms to communicate with each other. The outermost shell is known as the valence shell and the electrons present on that shell are called valence electrons.

e. The given statement is false. The mass number of an element is the total number of neutrons and protons found in the atom.

Conclusion

Thus, it can be concluded that the statements (a), (b), and (d)aretrue and statements, (c), and (e) is false.

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Chapter 2 Solutions

EBK HUMAN ANATOMY & PHYSIOLOGY

Ch. 2.2 - Prob. 3QCCh. 2.2 - What is an ionic bond?Ch. 2.2 - 5. How is an ionic bond formed? Ch. 2.2 - 6. Explain how polar and nonpolar covalent bonds...Ch. 2.2 - What are hydrogen bonds? Why do hydrogen bonds...Ch. 2.2 - Which would be more reactive-an atom of fluorine...Ch. 2.2 - Would a molecule of hydrogen (H2) form hydrogen...Ch. 2.2 - Explain why the molecule Na2 does not exist in...Ch. 2.3 - Prob. 1QCCh. 2.3 - Prob. 2QCCh. 2.3 - How do endergonic and exergonic reactions differ?Ch. 2.3 - Prob. 4QCCh. 2.3 - What factors can influence the rate of a chemical...Ch. 2.3 - 6. What is an enzyme, and what does an enzyme do? Ch. 2.3 - Prob. 1AWYLCh. 2.3 - Explain why most biological molecules are stable...Ch. 2.3 - 3. Many naturally occurring poisons function by...Ch. 2.4 - What are four properties of water that make it a...Ch. 2.4 - 2. Which molecules are likely to be hydrophilic?...Ch. 2.4 - 3. Define the terms acid and base. Ch. 2.4 - What is the pH scale? Which pH values are...Ch. 2.4 - What is the effect of a buffer on a solution?Ch. 2.4 - What is a salt?Ch. 2.4 - 7. What does an electrolyte do in a solution? Ch. 2.4 - Explain how the water surrounding a fetus in the...Ch. 2.4 - Prob. 2AWYLCh. 2.5 - 1. How do polymers and monomers differ? Ch. 2.5 - 2.3. How do monosaccharides, disaccharides, and...Ch. 2.5 - 2. How do monosaccharides, disaccharides, and...Ch. 2.5 - How are two monosaccharides linked to form a...Ch. 2.5 - Prob. 5QCCh. 2.5 - 5. How do phospholipids and triglycerides differ? Ch. 2.5 - What are steroids?Ch. 2.5 - Prob. 8QCCh. 2.5 - How are amino acids linked to form peptides and...Ch. 2.5 - What are the four levels of structural...Ch. 2.5 - 10. What are the components and roles of ATP? Ch. 2.5 - 11. How do DNA and RNA differ? Ch. 2.5 - 11. What are the three components of a...Ch. 2.5 - Which molecule would be the most soluble in water:...Ch. 2.5 - In Module 2.3, you learned that increasing...Ch. 2.5 - 3. How could a defect in a gene lead to a...Ch. 2 - Prob. 1CYRCh. 2 - Fill in the blanks: Isotopes are atoms with the...Ch. 2 - 3. Which of the following statements correctly...Ch. 2 - 4. Explain the difference between an ionic and a...Ch. 2 - Identify each of the following molecules or...Ch. 2 - What are hydrogen bonds, and how do they form?Ch. 2 - Prob. 7CYRCh. 2 - Prob. 8CYRCh. 2 - Which of the following would not result in an...Ch. 2 - 10. An enzyme is a: a. biological catalyst that...Ch. 2 - Prob. 11CYRCh. 2 - With respect to their solubility in water,...Ch. 2 - Mark the following statements as true or false. If...Ch. 2 - A salt is: a. a metal cation bonded to a nonmetal...Ch. 2 - 15. Compare and contrast the structures of...Ch. 2 - 16. Mark the following statements as true or...Ch. 2 - 17. Why is it important for a protein to maintain...Ch. 2 - Which of the following is not part of a...Ch. 2 - 19. Mark the following properties as belonging to...Ch. 2 - Which of the following statements is/are true...Ch. 2 - 1. In certain types of radioactive decay, the...Ch. 2 - Considering that water is a main component of the...Ch. 2 - 3. Explain why monosaccharides are polar and fatty...Ch. 2 - 1. The polysaccharide cellulose is not digestible...Ch. 2 - Some claim that the pH of your blood can be...Ch. 2 - Prob. 3AYKCh. 2 - Prob. 5AYKCh. 2 - You have just dropped some phospholipids into...
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