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Unit 1 Transition Mechanisms

Main topic

Topic 1.0 Why is Water Biologically Important?

Should Do's

1. Describe how the molecular structure of water contributes to its properties. 2. Differentiate between cohesive and adhesive properties. 3. FULLY explain why water is biologically important.

1. the waters role as a solvent helps cells transport 2. Cohesive is when water molecules stick with each other, while adhesive is when water molecules stick to other substances, like in the example of Xylem. 3. universal solvent, high heat compacity ( maintains constant temperature ) , a polar covalent molecule that is both adhesive and cohesive and forms a lattice

Should Knows

Should Know's Define: cohesive, adhesive, transpiration, surface tension, lattice, ion

Subtopic

Cohesive: Water molecules stick to each other.

Ion: a charged atom or particle

Surface Tension: property allowing liquid to resist external force

Lattice: A pattern created by molecules in a crystal

Adhesive: water molecules stick to other substances

Transpiration: Moving water out of the plant