StudentLecture_08_%26_09

StudentLecture_08_%26_09 - This Week For Lab: From Element...

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1 For Lab: “From Element to Salt ,” Chapter 3 in your lab manuals. Note the prelab assignment. Bring your lock if you have not already done so. Homework due Friday 9/21. Exam grades and total points to date will be posted as soon as IDP can process them. Reading for today and Thursday: Sections 7.3 – 7.8 This Week
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2 S orbital P orbital
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3 D orbital
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4 d-Orbital Shapes 4 of these 1 of these
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Ca 2+  ions in nerve action 5 A nerve impulse is transmitted through the use of calcium ions and neurotransmitters. The nerve impulse triggers the opening of calcium channels allowing Ca 2+ ions to migrate into the cell. The presence of Ca 2+ ions triggers release of neurotransmitters (acetylcholine ACh) into the synapse. The neurotransmitters collect on the other side of the gap and trigger a contraction.
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6 Before a biologist can begin to ask “Why ions?” the following understanding is required: What are properties of ions? Which atoms form ions? What compounds contain ions?
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Question #1    7 Remember, electron shells get larger as n increases and electron shells with the same n get smaller as the nuclear charge increases Ease of forming ions is relates to atomic size. Which is the smallest atom? a. As b. Ba c. Ca
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Atomic Radii are impossible to identify for isolated atoms 8 Where does this orbital end?
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9 Metallic and covalent radii are determined from bond length
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10 increase Atomic radii (pm) of the main-group elements Decrease Zeff increases N dominates Z is the
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StudentLecture_08_%26_09 - This Week For Lab: From Element...

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