Bite-Sized Morsels of Biology that are Good and Good For You
Energy of Atoms
Atoms are made of 3 subatomic (smaller than atoms) particles
-
Protons - have a positive charge; stay in the nucleus
-
Neutrons - have no charge (neutral) and stay in the nucleus
-
Electrons - have a negative charge and orbit around the nucleus
Charges play a key role in the energy of atoms
-
Opposite Charges (+ and -) attract
-
Like charges (- and -) or (+ and +) repel each other
Bonds form when atoms come together to make molecules
-
Covalent bonds occur when atoms share electrons
-
Ionic bonds occur when charged atoms are attracted to each other
Atoms in water are constantly moving (kinetic energy)
-
Brownian Motion - atoms/molecules in a fluid (liquid or gas) are constantly moving because the particles of the fluid keep bumping into them
-
This allows for easier transport of molecules, and diffusion
Topics
General Bonding Info
Ionic Bonds
Covalent Bonds
Hydrogen Bonds
General Diffusion
Diffusion Across a Membrane
Osmosis