Laboratory Techniques and Measurements

Name: Kensley Shelley|Date: 9-17-12|
Exp 2: Laboratory Techniques & Measurements|Lab Section: 0000|

Data Tables:

Step 1: Length and Measurements

Object Measured|Length in cm|Length in mm|
Key|5.15 cm|51.5 mm|
CD|12.0 cm|120.0 mm|
Fork
Spoon|18.05 cm
16.30 cm|180.5 mm
163.0 mm|

Step 2: Warm Temperature Measurements

Hot tap water temperature 49.50_˚C
Boiling water temperature __immediately:104.5; after 5 minutes: 103.0__˚C

Step 3: Cold Temperature Measurements

Cold tap water temperature _24.5_˚C
Ice water temperature after 1 min:4.5, after 5 min:1.0 ˚C

Step 4: Volume Measurements

Volume of half filled graduated cylinder __12.5__mL
Volume of completely filled small test tube __n/a__mL
Number of drops in 1 mL ___14_drops
Volume of the micro pipet __28__ drops _2___mL

Step 6: Density Measurements
Part A
Mass of empty graduated cylinder _16.9_g
Mass of graduated cylinder and water 21.1_g
Net mass of the water __4.2_g
Density of the water _0.84_ g/mL

Part B
Mass of graduated cylinder and alcohol _20.4_g
Net mass of the alcohol __3.5_g
Density of the alcohol __0.7__ g/mL

Part C
Mass of graduated cylinder and salt solution ____g
Net mass of the salt solution ____g
Density of the salt solution ____ g/mL Part D
Volume of half filled graduated cylinder __8.0__mL
Volume of half filled graduated cylinder and metal bolt _9.1__mL
Volume of the metal bolt _1.1_mL
Mass of the metal bolt __7.2__g
Density of the metal bolt __6.55__g/mL

Part E
Mass of half filled beaker __89.0__g
Mass of water displaced by metal bolt __90.1__g
Volume of the metal bolt __1.1__cc
Density of the metal bolt __6.55__g/cc

Mass of half filled beaker __89.0__g
Mass of water displaced by magnet __89.8__g
Volume of the magnet _0.8_cc
Mass of