Bio Grade 9 Unit 2

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Last updated 2:26 PM on 8/28/26
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16 Terms

1
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Rule of 3’s

3 minutes w/o air, 3 days w/o water, 3 weeks w/o food

2
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Polar molecule

water is a sticky molecule

3
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Cohesion

sticks to other water molecules

4
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Adhesion

sticks to other substances

5
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Water forms…

hydrogen bonds

6
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Universal solvent

water

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Solvent

the dissolver H2O

8
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Solute

the dissolved NaCl

9
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Solution

mix of solute and solvent

10
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Is ice denser than water?

no, ice floats while water sinks

11
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Water has a …

high heat capacity

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Water maintains…

homeostasis

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What does water do for cells?

Provides structural support

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Intracellular

inside cell

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Extracellular

outside cell

16
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Energy …

RXN’s require H2O