| Study guide for Ch 2 test // |
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Chapter 2 - from the periodic table, know how to figure out atomic structure: protons, neutrons, electrons - definition of isotope and an example - electron energy levels: where are high energy levels? low? - # of e- in each level - know how to draw a diagram of an element with the e- levels - what's the difference between an ionic and covalent bond? - covalent bonds: single bond vs. double bond, examples - CHNOPS; what type of bond do they form? why are these 6 elements so important? - structure of a water molecule, types of bonds, polarity? - explain how a water molecule forms 4 hydrogen bonds - what is surface tension and explain how it works - what is the difference between heat and temperature? - explain why ice floats, what do the H bond have to do with this? - definitions: solute, solvent, solution - effect of water on: ionic substances, polar molecules, and nonpolar molecules? - acids and bases: what are the pH levels for each, pH of water, why is pH range important for organisms? |