Discuss why there are differences in the specific gravity values experimentally determined and those measured using the hydrometer.

Density and Specific Gravity 1. Title (Density and Specific Gravity) and your name 2. Introduction • Density – Definition, equation and units for solids, liquids and gases. -Effects of Temperature on Density. -What objects float on water and which objects sink in water? • Specific Gravity – Definition, equation and units. 3. Method The instructions in the lab book (Experiment in Chemistry, Custom Edition for Goodwin College, 2004, pg 23-27) were followed except that in section C, no string was used to lower the object into the water and in section D, 5 pennies were used instead of 2 or 3 pennies. 4. Results – Type out all the tables and results and calculations in your graded lab sheet. 5. Discussion • Discuss why there is a difference between the density of water and that of the alcohol? • Discuss why there are differences in the specific gravity values experimentally determined and those measured using the hydrometer.Density of water is 1.00 g/mL at 4 ⁰C. At higher temperatures, density of water will be less than 1.00 g/mL, hence the specific gravity calculated may be comparable with the hydrometer measurement at room temperature. • Uniqueness of density – Density can be used to determine the identity of an object. • Graphical determination gives more accurate value of the density of pennies by measuring different masses and volumes. 6. References. Timberlake, K. C. (2015). Chemistry: An Introduction to General, Organic, and Biological Chemistry, 13th ed., Pearson, San Francisco.pgs…….. Experiments in Chemistry: Chemistry 101, Custom Edition for Goodwin College (2014). “Title of the Lab”.Pearson Education Inc., Upper Saddle River. NJ. pgs…….