Mr Jay water properties and purification

What is a water molecule composed of?

• 1 Hydrogen atom and 2 Oxygen atoms
• 2 Hydrogen atoms and 1 Oxygen atom
• 3 Oxygen atoms
• 2 Helium atoms and 1 Oxygen atom

What property of water allows it to be such a versatile solvent that it is often called the "universal solvent?"

• Purity
• Polarity and high surface tension
• High heat capacity
• Expansion upon freezing

Large bodies of water do not quickly fluctuate in temperature. Why?

• Water is a solvent.
• Water has a high heat capacity.
• Water acts as a buffer.
• Water is non-polar.

Why can water have no net charge but have slight charges in different parts of the molecule?

• The oxygen end is slightly negative and the hydrogen end is slightly positive
• The hydrogen end is slightly negative and the oxygen end is slightly positive
• The hydrogen and oxygen ends change in polarity
• Because it is hydrophobic

Why can water have no net charge but have slight charges in different parts of the molecule?

• The oxygen end is slightly negative and the hydrogen end is slightly positive
• The hydrogen end is slightly negative and the oxygen end is slightly positive
• The hydrogen and oxygen ends change in polarity
• Because it is hydrophobic

The illustration provided shows a river and four cities on that river. When the water from the river was sampled at location X, it was determined to be polluted with various chemicals. What would be the most likely source for this pollution?

• City 1 and City 2
• City 2 and City 3
• City 3 and City 4
• City 1 and City 4

What is a divide?

• a natural stream of water of considerable volume
• a continuous ridge that separates a watershed
• small rivers or streams that flow into a larger river or stream
• a body of fresh water found in low lying areas

What is a watershed?

• Water in an area
• Water that flows into a river or stream
• Land that water flows over and through
• Water that is salty

All of the following are Major Watershed for Virginia except:

• Gulf of Mexico
• Chesapeake Bay
• North Carolina Sound
• Outer Banks

The transition zone between dry areas of land and bodies of water are called:

• Wetlands
• Watersheds
• Divides
• Estuaries