q1w2.key - Dr. Zellmer Time: 23 mins Name 1. KEY Chemistry...

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Dr. Zellmer Chemistry 101 Wednesday 10:30 AM Time: 23 mins Summer Quarter 2008 June 25, 2008 Quiz I Name KEY Rec. Instr. 10:30 1. (5 pts) Give the names, correctly spelled, for the elements whose symbols are given below: a) Mn Manganese b) Fe Iron c) B Boron d) Cl Chlorine e) Ni Nickel 2. (5 pts) Give the symbols, correctly written, for the elements which are named below: a) chromium Cr b) potassium K c) copper Cu d) helium He e) magnesium Mg First letter must be capitalized and second letter must be lower case. 3. (3 pts) Ethane can decompose to give carbon and hydrogen. Write a word equation for the reaction AND label the reactants and products . ethane ------------> carbon + hydrogen “gives” Reactants or Products “produces” “forms” “yields” 26 2 C H (g) ------------> 2 C (g) + 3 H (g) (Don’t need to know this yet.) 4. (2 pts) Report the following numbers to indicated number of significant figures . a) 1020000 (to 4 sig. figs.) b) 3.03450 (to 4 sig. figs.) 1.020 x 10 3.034 6 This should be in proper scientific Dropping a “ 50 " (exactly halfway between 3.034 and notation to report this to 4 s.f. properly
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This note was uploaded on 07/17/2008 for the course CHEM 101 taught by Professor Stegemiller during the Summer '07 term at Ohio State.

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q1w2.key - Dr. Zellmer Time: 23 mins Name 1. KEY Chemistry...

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