Bio 101 Day 5

Bio 101 Day 5 - Isotopes of Hydrogen 1 2 3 H-Ordinary...

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Isotopes of Hydrogen 1 H-Ordinary Hydrogen 2 H-Deuterium (“heavy hydrogen”) 3 H-Tritiun (used as a radioactive tracer) Autoradiography-based on radiation changing silver -radiation hits silver and activates the silver -all these grains move that can be developed Black and White Photography-based on light changing silver Ionization -How can an atom become an anion? Gain an electron -How can a group of atoms become an anion (i.e. polyatomic anion)? Can lose a proton -How can an atom become a cation? Lose an electron -How can a group of atoms become a cation (i.e. polyatomic cation)? Gain a proton Covalent Bonds C-4 O-2 S-2 H-1 N-3 (usually) P-5 Water
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What is an electronegative atom? If an atom is electronegative, in covalent bond the electrons spend more time near electronegative atom. Polar Covalent Bonds-electrons are shifted towards one side Oxygen always has effect of changing molecule in some ways or another. Polar Molecules-Water has negative and positive ends Carbon Dioxide is non-polar -Some molecules with polar covalent bonds are non-polar compounds because of their shape. Hydrogen Bonds
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Bio 101 Day 5 - Isotopes of Hydrogen 1 2 3 H-Ordinary...

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