BIOL 2457 Lecture Notes - Lecture 2: Van Der Waals Force, Subatomic Particle, Ionic Compound
Document Summary
Energy can be potential or kinetic, and can switch back and forth. Potential energy is stored energy; inactive energy that has potential. Chemical energy form of energy stored between chemical bonds for example is atp. Mechanical energy energy directly involved in moving mattermovement, muscles. Electromagnetic energy energy that travels in waves eyes. Heat gets released when going from one form to another 33. Elements: composed of a single type of atom and cannot be broken down into simpler substances by conventional methods. Atoms: smallest stable units of matter, composed of 3 subatomic particle types: protons,electrons,neutrons. The big 4 ( 96% of the body: hydrogen, cardon, nitrogen, oxygen. Sodium, chlorine, potassium, iodine + the big 4= 99% of the body. The remaining 1% is composed of calcium, phosphorus, sulfur, magnesium, iron. A compound is when you take two things and stick em together ch4. Mixture: when 2 or more atoms of the same element share electrons.
