Chemistry 110 - Review Sheet for Exam #1

You should be familiar with key terms listed below.  You should solve the assigned problems from course syllabus. Some of these problems, or problems very similar, will be on the exam.  If you can solve them, you should do well on the exam.  Check syllabus for Exam date.

Chapter  1: scientific method theory hypothesis SI system Fundamental units mass weight uncertainty accuracy precision random error systematic error significant figures exponential notation dimensional analysis unit factor density matter states of matter homogeneous mixture heterogeneous mixture solution pure substance physical change distillation filtration chromatography paper chromatography compound chemical change element

Chapter 2: law of conservation of mass law of definite proportion law of multiple proportions atomic masses atomic weights cathode ray electron radioactivity nuclear atom proton neutron isotopes atomic number (Z) mass number (isotope number) chemical bond covalent bond molecule chemical formula ion cation anion ionic bond polyatomic ion periodic table metal nonmetal group (family) alkali metals alkaline earth metals halogens noble gases binary compounds binary ionic compounds acids

Chapter  3: chemical stoichiometry mass spectrometer average atomic mass mole Avogadro's number molar mass percent composition empirical formula molecular formula chemical equation reactants products balancing a chemical equation equation mole ratio stoichiometric quantities Haber process (making NH3) limiting reactant theoretical yield percent yield