BIOL 1201 Chapter : BIOLOGY
Document Summary
Terminology: hypothesis: prediction that hasn"t been really tested, law: once theory is tested numerous times and is successful it becomes a law theory: they have real validity. What is biology: is the study of life. What determines solubility: like dissolves like, like in terms of polarity. Atom: smallest unit of matter separable by normal chemical means, the smallest unit of matter that retains all of the properties of that element. Valence- the number of electrons that need to be gained or lost to fill the outer shell of electrons. Valance also predicts the number of bonds that an atom will form. Valance electrons, the electrons i the outermost shell k model atom. Chemical bonds: form when atoms gain and lose or share electrons, they are the result of electrical attractions between atoms. Ionic bonds: form when atoms completely gain and lose electrons, strongest bonds when dry. Covalent bonds: form when atoms share electrons, strongest bond in water.
