A1.1 Water
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Last updated 12:11 PM on 9/10/23
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33 Terms
1
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Water is formed by what type of bonds between oxygen atoms and hydrogen atoms?
polar covalent
2
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Oxygen develops a negative charge from what that it’s keeping most of the time?
extra electrons
3
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“sharing an electron unevenly”
definition of polar covalent
4
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Hydrogen molecules have a _____ charge awhile oxygen molecule has a ____ one
positive, negative
5
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Oxygen is highly ____
electronegative
6
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electronegative
tendency to have a strong pull on electrons
7
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unequal sharing of electrons and different charges on one molecule
polarity
8
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how fast heat moves through a material
thermal conductivity
9
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how much energy it takes to raise the temperature
specific heat
10
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the movement of water against gravity due to its adhesive properties
capillary action
11
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water is attracted to water
cohesion
12
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water is attracted to other substances
adhesion
13
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the surface of a pond or body of water creates a membrane that can support small organisms on its surface
surface tension
14
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a pulling of water both up the plant towards the stomata and down the plant towards the root, creating a rope like stream of water being pulled in both directions
tension forces in xylem
15
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the upward force applied to an object that’s immersed in a fluid
buoyancy
16
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the resistance to flow of a liquid
viscosity
17
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all the enzyme catalyzed reactions in an organism, including both building and breaking molecules
metabolism
18
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substances can be dissolved in water and moved more easily
transport
19
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hydrophilic or hydrophobic: sodium chloride
hydrophilic
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hydrophilic or hydrophobic: amino acids
hydrophilic
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hydrophilic or hydrophobic: glucose
hydrophilic
22
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hydrophilic or hydrophobic: oxygen
hydrophobic
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hydrophilic or hydrophobic: fats molecules
hydrophobic
24
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hydrophilic or hydrophobic: cholestrol
hydrophobic
25
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hydrophilic or hydrophobic: mineral ions
hydrophilic
26
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hydrophilic or hydrophobic: sucrose
hydrophilic
27
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Water was believed to arrive to earth via what?
asteroids
28
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What factors led to earth retaining its water?
distance from the sun and size (gravity)
29
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idea that a planet needs to be the right distance from the sun to maintain liquid water and have enough gravity to keep the water at its surface
Goldilocks zone
30
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Water has ____ thermal conductivity than air
more
31
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Water is ____ viscous than air
more
32
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Freshwater is ____ viscous than saltwater (hint: salinity)
less
33
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Is water more buoyant than air?
yes
