BIOL 2457 Lecture Notes - Lecture 3: Van Der Waals Force, Subatomic Particle, Salad
Document Summary
Matter- anything that takes up space and has mass: matter exists in solid, liquid and gas states. Energy- the capacity to put matter in motion (do work) o. Ex: baseball player that hits home run uses more energy than someone that. Energy exists in 2 states and has many forms bumps a ball. Energy can be potential or kinetic, and can switch back and forth o. Ex: top of rollercoaster, glycogen, hydroelectric dam: kinetic energy-energy in action. Energy is used by the body in several convertible forms o o. Chemical-energy that is stored in bonds and released when those bonds are broken. Electrical-nervous system and cardiac system use electrical energy: mechanical-energy for movement; muscles o. *all living things are composed of matter and all require energy to grow, function and reproduce* Elements- composed of a single type of atom and cannot be broken down into simpler substances by conventional methods. Composed of 3 subatomic particle types: protons, electrons and neurons.
