Unformatted text preview: Identify two properties from above: one physical and one chemical. Physical (many possibilities): white, melts at 649 °C, has a density of 1.738 g/cm 3 , good conductor, etc. Chemical (two possibilities): burns air and reacts with chlorine. 3. (3 pts) Which of the following are NOT SI base units? [a] second [e] meter [b] mole [f] gram (it’s kilogram) [c] liter (derived unit) [g] Celsius (it’s Kelvin) [d] kilogram [h] Kelvin 4. (3 pts) Give the number of significant figures for each number. [a] 1.3004 × 10 2 dg [b] 4.0 cL [c] 0.0003024 km 5 sig figs 2 sig figs 4 sig figs 5. (4 pts) One hundred centigrams (cg) equal one gram (g). Ten decigrams (dg) equal one gram (g). How many dg are in 0.421 cg? 0421 1 100 10 1 0 0421 . . cg g cg dg g dg × × = 6. (1 pt) What element has the chemical symbol H? Hydrogen...
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This note was uploaded on 07/10/2011 for the course CHM 2045 taught by Professor Eng during the Fall '10 term at UNF.
- Fall '10