PRE-LABORATORY QUESTIONS (To receive credit, where necessary, show your set-up and work) 1. Determine the oxidation number on the underlined element: dj H301 a] MnO41- c] NH3 b] HNO3 h] NaSO41- el SO3 _g] CH4 f BrO41- ]NH41+ NO31- k] KAI(SO4)2 .j] HCIO4 ml N2 .n] Ca(OH)2 o] Co(FO)2 _Pl PCI3 2. Determine which of the following reactions are "redox" reactions. Circle the "letter only those that represent red ox reactions. a. Cu + 4 HNO3 2 NO2 +2 H20 2 Cu(NO3)2 b. Zn + 2 H1 Zn2+ H2 c. BaCl2 + H2SO4 2 HCI +BaSO4 d. H1+ Br1- HBr 2 FeCl3 e. 2 Fe + 3 Cl2 f. AgNO3 + HCI AgCI +HNO3 g. 2 NaOH H2SO4 2 HOH + Na2SO4 h. 2 H2 O2 2 H20

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.