CHM 1025C  M-5i E Answers

Module 5i-Part  E:  Basic Stoichiometry Definitions     10 points


Fill in the following with the symbols used in chemical equations which has the stated translation or meaning(s) (Section 7.2 Table 7.1 page 191 Corwin 7th )::


___   __1.  Produces, yields, gives


____+____2.  Reacts with, added to, plus


___ (s) ____ and ___   ____ 3. Solid substance or precipitate forms


___ (g)    ____and  __     _____4.  Gaseous substance formed



___(l)___ 5.  Liquid Substance


___ (aq) __5a.  Water or aqueous solution


____        __6. Reversible Reaction


___ NR ______7.  No Reaction


8. Show the symbol for heat:___  Δ   ____


9. How would you show a catalyst in a chemical reaction where A plus B forms products D and E, but is catalyzed by substance C



   A   +   B     ------>      D    +    E


10. Define Catalyst (See Section 7.2 page 191)


A substance that speeds up a chemical reaction without being permanently changed (Sect 7.2). or A substance that allows a reaction to proceed faster by lowering the energy of activation. (Section 16.2)


Reference: Chapter 7 Corwin 7th Section 7.2 See Table 7.1 page 191