The Extraordinary Properties of Water. Warm up When atoms loose or gain electrons and become charged, What are they called? What are positively charged ones called? What are the negatively charged ones called?. H. H. Water.
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When atoms loose or gain electrons and become charged, What are they called?
What are positively charged ones called?
What are the negatively charged ones called?
Negative Oxygen end of one water molecule is attracted to the Positive Hydrogen end of another water molecule to form a HYDROGEN BOND
Helps insects walk across water
Introduction: Surface tension refers to water’s ability to stick to itself”. Surface tension van be measured and observed by dropping water (drop by drop) onto a penny. The number of water drops that can fit on a penny will surprise you.
QUESTION: How does soap affect water’s surface tension?
Rewrite the question and then write a hypothesis that answers the question at the top of page 19 in your BIN.
Test your hypothesis by comparing the number of drops of plain tap water to the number of drops of soapy water.
Do 5 trials of each and determine their averages
Create a data table for your results below your hypothesis on page 19 of your BIN
5. Analyze the data and draw conclusions. Write a paragraph below your data table (using complete sentences) that explains how soap affects the surface tension of water, using your data to help you answer the question. Suggest a reason for your observation (why did it happen). Support or reject your hypothesis.
Which gives water the ability to “climb” structures
Attach to a silken spider web
Form spheres & hold onto plant leaves
a. Makes a good insulator
b. Resists temperature change
c. Universal solvent
e. Ice protects against temperature extremes (insulates frozen lakes)