LSU Biol 1201 Exam 1 Already Passed!!

Hypothesis - a small statement that you can test Theory - broader in scope than a hypothesis and can lead to a new testable hypothesis; supported by a large body of evidence in comparison to a hypothesis Deductive - Testing what you think is true; Design, Test, Conclusion Inductive - making observations and solution from that observation; All observations have the same result. Valence - Outer shell of electrons; the number of unpaired electrons in the valence shell of an atom is generally equal to its valence (the # of covalent bonds it can form) Atomic mass - the atom's total mass, which can be approximated by the mass number Mass number - the sum of protons and neutrons in the nucleus Atomic number - the number of protons in an element Isotopes - two atoms of an element that differ in the number of neutrons Radioactive isotopes - decay spontaneously, giving off particles and energy Hydrogen bonds - forms when a hydrogen atom covalently bonded to one electronegative atom is also attracted to another electronegative atom covalent bonds - Strongest bonds in organisms are _______ ________ that form a cell's molecules.Weak chemical bonds - (ionic and hydrogen bonds) confer shape of large molecules and help molecules interact Chemical Equilibrium - reached when the forward and reverse reaction rates are equal Van der Waals interactions - attractions between molecules that are close together as a result of these charges Ionic bonds form between - Metals and non metals