Exam 2 Review

How many people live in the Chesapeake Bay watershed?

• 10 million

• 15 million

• 20 million

• 25 million

What is the estimated economic value of fishing and recreational economies in the bay?

• $10 billion

• $20 billion

• $33 billion

• $50 billion

What is the main source of sediment pollution in the bay?

• Industrial waste

• Urban runoff

• Agricultural runoff

• Oil spills

What is the significance of the nucleus in an atom?

• It is where electrons are found

• It is the center of the atom

• It is the outer shell of the atom

• It is where atoms bond

Which molecule is known as table salt?

• NaCl

• H2O

• CO2

• CH4

What is the chemical formula for nitrogen gas?

• N2

• NO2

• NH3

• NO

What is the term for the attraction between ions with opposite charges?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Metallic bond

Which element is particularly important in forming organic compounds?

• Oxygen

• Nitrogen

• Carbon

• Hydrogen

Which of the following is a simple amino acid?

• Propane

• Glucose

• Adenine

• Amino acid

What is the pH of liquid drain cleaner?

• 3

• 5

• 7

• 13