THTR 1020 : Biol 1201 Exam 1 Study Guide
Document Summary
Scientific method terminology: hypothesis-an idea, theory-concepts that have been tested and are supported many times. Law-a theory that is continuously tested and continues to gain support. What is life? characteristics if living systems: organization (cells and organic materials, energy use (gas exchange, using resources in the environment, development, reproduction, respond to the environment. Like dissolves like (compounds with similar properties dissolve one another) Like in terms of polarity. (polar solvent dissolves in polar solutions) non-polar dissolves non- polar. Atoms: smallest unit of matter separable by normal chemical means, smallest unit of matter that maintains all properties of the element. Valence: the number of electrons that need to be gained or lost to fill the outer shell of electrons, valence also predicts the number of bonds an atom will form, valence electrons are atom in the outermost shell. What determines the polarity of a molecule: the type of bond(s) within a molecule, they are the result of electrical attractions between atoms.
