Aim: Why is water important for life?
Name and Last Name *
Period # *
DO NOW: List 3 important things that living things need for survival
Vocabulary *
8 points
Required
                                                              Today’s vocabulary
Water molecules stick to each other. This is caused by hydrogen bonds that form between the slightly positive and negative ends of neighboring molecules. This is the reason why water is found in drops; perfect spheres.
Water molecules stick toother surfaces. This causes water to move upward against gravity in plant stems and to be absorbed bypaper towels. It also causes water to adhere to spider webs.
Polarity: All of water’s unique physical properties are caused by water’s polarity. Polarity is the uneven distribution of charge on a molecule. One side will have a positive charge and the other side will have a negative charge because they do not share the electrons equally.
The positive hydrogen and the negative oxygen atoms of different water molecules attract each other. This makes water “sticky”
Water has the ability tosupport small objects. Thehydrogen bonds between neighboring molecules cause a“film” to develop at the surface.
Water is able to dissolve awide variety of substances so it is considered to be the universal solvent. Moresubstances will dissolve in water than any other liquid.
 Important Water Facts
Watch this video about Water Properties:
https://www.youtube.com/watch?v=h0py6BFlFZw
Did you watch the video about water properties? *
4 points
1. Why is water important for life?  Please support your answer with facts from the video.   *
2. What are the two elements in the water molecule? *
2 points
3. What is the solid state of water called *
2 points
4.  An average human can survive without water for a few weeks. *
10 points
5. Pure water is tasteless.
2 points
Clear selection
6. About how much of Earth’s surface is covered with water? *
10 points
7. What property of water allows it to stick to itself? *
2 points
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8.The water property represents in the diagram below is called  
2 points
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9. About how much water is in our body? *
2 points
10) Choose the right answer for each word. *
6 points
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liquid
solid
gas
11) Choose the right answer for each word. *
4 points
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2
The partial negative end of the oxygen atom is attracted to the partial positive end of the H atom on an adjacent molecule
The unequal distribution of charges on the water molecule
12) Choose the right answer for each word. *
6 points
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1
2
3
molecular attraction exerted between molecules that are the same,
Water dissolves positive and negatively charged particles.
molecular attraction exerted between unlike substances in contact.
Exit Ticket : List 3 important properties of water *
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