Please enable JavaScript.

Coggle requires JavaScript to display documents.

Chemistry for Biology (WATER and pH (pH (measures the concentration of H+…

- - - - polar - molecule. Each H shares an electron with O. Oxygen more attractive to the electrons in the molecule so they hang out there causing oxygen side to be negative and the hydrogen side to be positive.
        
        high specific heat
        
        it takes a lot of heat energy to change the temperature of a body of water
        
        capillary action
        
        the ability of water to move up a small of diameter tube against the force of gravity
        
        high heat of vaporation
        
        when water evaporates it absorbs a lot of heat energy, helping to cool the object it evaporates from
        
        water as a solvent
        
        water will dissolve most polar
        
        surface tension
        
        surface of a body of water will form a film on top because of cohesive properties
        
        adhesion
        
        a substance ability to attract particles of different substances, explains water's solvent properties and part of capillary action
        
        cohesion
        
        a substance to attract particles of the same substance, explains surface tension, high heat of vaporization, high specific heat, ice being less dense than liquid water/some of capillary action
  - - - water
        
        1 out of 10,000,000 water molecules ionizes into an OH- ion and a H+ ion; pH = 7
      - acid
        
        any substance that emits H+ ion when added to water
      - base
        
        any substance that emits OH- ions when added to water
- - - - living organisms 99% composed of C, H, O, N
    - - protons
        
        in nucleus, have mass, positive charge
      - neutrons
        
        in nucleus, have mass, no charge
      - electrons
        
        in energy shells, no mass, negative charge
        
        octet rule, innermost shell fits w/2 electrons; other shells fill with 8
      - covenant bonding - electrons shared, pairs go around both atoms
        
        bonding - to fill valence shell. atoms bond to other atoms
        
        compounds - combinations of two or more elements, have different properties than component elements
        
        ionic bonding