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BLOCK 2 Questions to consider. Definition/Illustration Spectrum of solubilty , insoluble but if shaken, emulsifies=droplets in solvent Influencing (IV) factors Heat Type charge on chemical Concentration of chemical/amount of water Acidity/ alkalinty (in baseline/guided expt ) - PowerPoint PPT Presentation
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BLOCK 2 Questions to consider
• Definition/Illustration– Spectrum of solubilty, insoluble but if shaken, emulsifies=droplets
in solvent• Influencing (IV) factors
– Heat– Type charge on chemical– Concentration of chemical/amount of water– Acidity/alkalinty (in baseline/guided expt)– Mixing/shaking/swirling etc.
• Things to measure/observe (DV)– Number/frequency– density– Size in microscope FOV
• Chemical explanation– Interaction between +/- charges (diagram) complex– Reduction of hydration around colloidal particles (research the
terms) simple– ? About role of water
• Connection to origin of life question– Shows a model for possible genesis– Share feature with present and original “cells”
Notes from Prelab
Characteristics of Life/Cell Theory recollections• Cells come from cells• Cells are the smallest unit of life• Metabolizing (respiring, growth, energy
transfer via enzymes)• Reproducing • Self-movement as a response to a stimulus
____________________________Theories as to origin of life• Panspermia- came from across the universe
(evidence: amino acids, fossils)• Chemical evolution- primordial soup (requiring:
energy transfer, polymerization, reproduction, information molecule)