Semester 2 Chemistry exam B

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Which of the following best describes the formation of an ionic bond?

• Electrons are shared between two nonmetals.
• Electrons are pooled together in a "sea of electrons.
• "One atom donates an electron to another atom, typically between a metal and a nonmetal.
• Electrons are transferred between two metals.

What is a key property of ionic compounds?

• They are malleable and ductile.
• They have low melting and boiling points.
• They are good conductors of electricity in solid form.
• They are usually soluble in water and conduct electricity when dissolved.

Which of the following statements is true about covalent bonds?

• They form between metals and nonmetals.
• They involve the transfer of electrons.
• They typically result in compounds with high melting points.
• They involve the sharing of electron pairs between atoms.

Cations – positively charged ions Anions – negatively charged ions

• True
• False
• Some times
• never
• Maybe

In a water molecule (H₂O), what type of bond holds the hydrogen and oxygen atoms together?

• Ionic bond
• Covalent bond
• Metallic bond
• Hydrogen bond

Which of the following is a characteristic property of metallic bonds?.

• They form between nonmetals
• They result in compounds that are poor conductors of electricity.
• They involve a "sea of electrons" that allows for malleability.
• They have low melting and boiling points.