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Accelerated Biology

Accelerated Biology. Review basic chemistry powerpoint. What element is being described?. One of the six major elements that is important in protein structure. Can be toxic in certain gas forms if too much is inhaled (also responsible for acid rain). Appears yellow in solid form.

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Accelerated Biology

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  1. Accelerated Biology Review basic chemistry powerpoint

  2. What element is being described? • One of the six major elements that is important in protein structure. Can be toxic in certain gas forms if too much is inhaled (also responsible for acid rain). Appears yellow in solid form. • One of the six major elements that is found in ALL organic compounds and makes up most of the mass of an organism compared to other elements • A trace element that is found in the blood and important for carrying oxygen and blood clotting • One of the six major elements that is important in making proteins. It is not toxic in the gas form but can be harmful in solid forms • One of the six major elements that is important for the construction of DNA and RNA • An element important for bone structure. Not one of the major six. • An element important in the formation of water. Low atomic number. One of the major six. • Trace element important to enzymes.

  3. Describe the following atom • Na-23 (+1) • Number of protons • Number of electrons • Number of neutrons • Number of valence electrons • Number of unpaired valence electrons • Ion? (which type)

  4. Describe the following atom • P- 31 • Number of protons • Number of electrons • Number of neutrons • Number of valence electrons • Number of unpaired valence electrons • Ion? (which type)

  5. True or false • The oxygen in water is an ion because it has a partially negative charge • Covalent bonding is the sharing of paired electrons • Isotopes are the same element with a different number of neutrons • Isotopes also have a different atomic number • Ionic bonding is the transferring of unpaired valence electrons • A compound must have 2 or more different elements • A molecule must have ionic bonding

  6. True or false • Acids release hydrogen ions into a solution • Bases are higher than 7 on the pH scale • A pH of 5 is twice as acidic as a pH of 10 • Buffers release hydrogen ions when the solution becomes too basic • Buffers keep the pH neutral • A pH of 7.4 is considered to be neutral

  7. What property of water? • Water climbing up paper • Water dissolving sugar • Water and oil mixed together • Water droplets form on the outside of a cold glass of water • Water strider walking on water • A dog panting to cool off

  8. What is wrong with this statement? • Water is polar covalent bond so it is considered to be polar • When water dissolves oil, water is the solvent • The hydrogen bonds within the water molecule create the partial charges on oxygen and hydrogen • Water will dissolve substances that nonpolar • Adhesion creates surface tension

  9. Acid or base? What will a buffer do if present? H+H+H+ H+ H+ H+ H+ H+ H+H+ OH- OH- OH- OH- OH- OH-

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