Biology Case Study Essay

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Case Study 1 1. Johnny has seen the words Sodium Chloride before in his science class with the periodic table. 2. Johnny couldn’t find Sodium Chloride on the periodic table because Sodium Chloride is a molecule made up of two atoms: Sodium and Chloride. 3. Sodium Chloride represents two atoms that together form a molecule: NaCl. Na: Sodium and Cl: Chloride 4. An ionic bond occurs when two or more ions (an atom whose number of elections differs from its number of protons) bond together because of their opposite charge. They are drawn to each other like magnets because of their opposite charge. 5. Sodium Chloride came about because Sodium, a positively charged ion, has one electron in its outermost shell and…show more content…
This is important to remember with a water molecule because the hydrogen bonds between individual molecules and are constantly breaking and then reforming. This allows the molecules to pack close together. 11. Acids are any substance that yields hydrogen ions when put in aqueous solution. In other words, the concentration of hydrogen ions goes up the the further doe the pH scale you go. Bases are any substance that accepts hydrogen ions in aqueous solution. Again, the more basic it is the lower the concentration of hydrogen ions. 12. The pH scale is a scale used to measure the relative acidity or alkalinity of a solution. The scale ranges from 0 to 14, and figures out the concentration of hydrogen ions in a solution. The lower the pH number, the more acidic the solution is. The higher the pH number, the more basic the solution. 13. At the chemical level, Johnny would be able to tell if something was an acid or a base by the concentration of hydrogen ions in a solution. 14. H+ refers to a hydrogen ion: a lone proton that has lost its electron making it a positively charged ion. 15. Acids are H+ donators: Acids release hydrogen ions in a solution, meaning the hydrogen ions concentration goes up, thus lowering the pH. Bases are H+ acceptors: Bases accepts hydrogen ions in a solution, meaning the hydrogen ion concentration goes down and the pH

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