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Ch. 2 Chemistry Comes Alive
Marieb - Human Anatomy & Physiology 11th Edition
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoMarieb, Hoehn 11th EditionCh. 2 Chemistry Comes AliveProblema 6
Capitolo 2, Problema 6

When a pair of electrons is shared between two atoms, the bond formed is called:
a. A single covalent bond
b. A double covalent bond
c. A triple covalent bond
d. An ionic bond

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1
Understand that a covalent bond involves the sharing of electrons between atoms to achieve stability.
Recall that a single covalent bond is formed when one pair of electrons (two electrons) is shared between two atoms.
Recognize that a double covalent bond involves two pairs of electrons (four electrons) being shared, and a triple covalent bond involves three pairs (six electrons).
Differentiate covalent bonds from ionic bonds, where electrons are transferred rather than shared.
Conclude that when a pair of electrons is shared between two atoms, the bond formed is a single covalent bond.

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Covalent Bond

A covalent bond is a chemical bond formed when two atoms share one or more pairs of electrons. This sharing allows each atom to achieve a stable electron configuration, typically resembling that of noble gases.
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Covalent Bonds

Single, Double, and Triple Covalent Bonds

These terms describe the number of electron pairs shared between two atoms: a single bond shares one pair, a double bond shares two pairs, and a triple bond shares three pairs. The bond type affects the molecule's strength and properties.
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04:28
Covalent Bonds

Ionic Bond

An ionic bond forms when one atom donates electrons to another, resulting in oppositely charged ions that attract each other. Unlike covalent bonds, ionic bonds involve electron transfer rather than sharing.
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Ionic Bonds
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Domanda del libro di testo

Which of the following does not describe a mixture?

a. Properties of its components are retained

b. Chemical bonds are formed

c. Components can be separated physically

d. Includes both heterogeneous and homogeneous examples

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Domanda del libro di testo

In a beaker of water, the water-water bonds can properly be called:

a. Ionic bonds

b. Polar covalent bonds

c. Nonpolar covalent bonds

d. Hydrogen bonds

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Domanda del libro di testo

Acids:

a. Release hydroxyl ions when dissolved in water

b. Are proton acceptors

c. Cause the pH of a solution to rise

d. Release protons when dissolved in water

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Domanda del libro di testo

Factors that accelerate the rate of chemical reactions include all but:

a. The presence of catalysts

b. Increasing the temperature

c. Increasing the particle size

d. Increasing the concentration of the reactants

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Domanda del libro di testo

The subatomic particles responsible for the chemical behavior of atoms are

(a) Electrons

(b) Ions

(c) Neutrons

(d) Protons

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Domanda del libro di testo

Which of the following molecules is an inorganic molecule?

a. Sucrose

b. Cholesterol

c. Collagen

d. Sodium chloride

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