Structure of Water
Properties of Water
Vocabulary
WQI pt.1
WQI pt.2
100

What is the chemical structure of water? Draw it

H2O 

100
Give an example of surface tension. 
Allows water gliders to walk on water
100

This uneven distribution of charges across a molecule makes one end positive (H) and the other negative (O)

Polarity
100

Water quality indicators are _________, __________,__________ measurements used to assess the health of a water body

physical, chemical, or biological

100

Nitrates and phosphates often come from __________ and cause algal blooms.

Fertilizers

200
How many hydrogen atoms are in a water molecule? 
There are 2
200

The ability of water to dissolve many substances allows water to deliver essential nutrients to___________in plants, animals, and other organisms.  

cells

200

The attraction that causes water molecules to form temporary bonds that break easily.

Hydrogen Bond

200

Temperature and turbidity are what type of indicators?

Physical

200

Water with a low dissolved oxygen level usually has ___________ fish.

Fewer

300
What is a molecule that has "electrically" charged areas?
Polar molecule 
300
Water rising in a tube is an example of what property? 
Capillary action
300

"Water-loving" and describes substances that dissolve in or readily interact with water.

Hydrophyllic
300

DO, pH, Nitrates, Phosphates, and conductivity are what type of indicators?

Chemical

300

What is the measure of how acidic or basic water is called?

pH
400

What is the charge on the oxygen in a water molecule?

Negative charge
400

Because of its polarity and ability to form hydrogen bonds, water makes an excellent _________, meaning that it can dissolve many different kinds of molecules.

solvent

400

"Water-fearing" describes substances that do not dissolve in or repel water.

Hydrophobia

400

Bacteria and Macroinvertebrates are what type of indicators?

Biological

400

______________ holds more dissolved oxygen. 

cold water
500
What is the difference between cohesion & adhesion?

cohesion: an attraction between molecules of the same substance

adhesion: a force of attraction between different kinds of molecules

500

_________ _________ is the amount of heat needed to increase the temperature of 1 kg of a substance by 1°C. 

specific heat

500

 At the surface, water creeps up slightly at the sides of the cylinder, forming a curved surface.

Meniscus

500

Name two ways in which humans can reduce nutrient pollution in local waterways.

Use less fertilizer, properly treat sewage, composting yard waste, pick up pet waste, reduce emissions, plant trees

500

An increase in nitrates and phosphates causes rapid algal growth, followed by oxygen depletion — a process called __________.

Eutrophication

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