Briefly distinguish between ionic and covalent bonding and discuss the role that electrons play in both
What will be an ideal response?
Ionic bonding involves a transfer of electrons from the valence shell of one atom to the valence shell of another. The result of this electron transfer is two oppositely charged ions that are strongly attracted to each other and join to form an ionic compound. Covalent bonding involves the sharing of pairs of valence shell electrons between two atoms.
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A succession of rocks bounded by unconformities is a(n) ____
a. period b. cratonic sequence c. system d. bedding plane e. ecosystem
Which sphere does not experience convection forces?
A) the geosphere B) the hydrosphere C) the atmosphere D) the biosphere
The timing of an entire life cycle into a few days after a rain and then followed by a long period of dormancy is a characteristic of ________ plants
A) xerophytic B) hydrophytic C) hygrophtic D) most E) tall