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Summary EmSAT Biology notes
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  • Module
  • EmSAT Biology
  • Institution
  • EmSAT Biology

These are some notes for the EmSAT Biology exam. I personally focused on cells and plants and did not include notes for the body systems or concepts like evolution. This study guide helped me achieve a score of 1125 on the exam which is why I do not recommend you to depend on these notes comple...

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  • July 25, 2022
  • 9
  • 2021/2022
  • Summary

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  • emsat
  • biology
  • emsat biology
  • summary

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  • EmSAT Biology
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Biology 2022
 The most stable arrangement is the one that puts them farthest apart
from each other: a tetrahedron, with the O−H bonds forming two out of
the four “legs”. The lone pairs are slightly more repulsive than the
bond electrons, so the angle between the O−H bonds is slightly less
than the 109° of a perfect tetrahedron, around 104.5°.
 Water is classified as a polar molecule because of its polar covalent
bonds and its bent shape
 Hydrogen bonds: weak interactions between and hydrogen with a
partial positive charge and a more eletronegative atom, such as
oxygen, nitrogen, and more.


,  Concave meniscus happens because the water is more attracted to the
container
 Water Sticking to another thing= adhesion
 Water sticking to itself= cohesion
 Capillary action= adhesion occurring more intensely and defies gravity
 Capillary action occurs in our capillaries
 This upward motion against gravity, known as capillary action,
depends on the attraction between water molecules and the glass
walls of the tube (adhesion), as well as on interactions between water
molecules (cohesion).
 The water molecules are more strongly attracted to the glass than they
are to other water molecules (because glass molecules are even more
polar than water molecules).

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