Unidentified Ufo Lab Report

Introduction
The purpose of this Lab was to identify the density of the unidentified object and determine what substance the unidentified object given by the teacher was. The density calculated in the experiment will stay the same because the density of the unidentified object will stay constant. The Independent Variable of this experiment was the calculated density and the unidentified object given. The Dependant Variable for this experiment was the density. The Controlled Variable for this experiment was mass and volume.

When identifying an unidentified object finding the density is the easiest way to do it because, any pure substance has a specific density at a specific temperature and each element and compound has a unique density associated

Fill beaker with water

Use the disposable pipette to place water in the graduated cylinder until the unidentified object would be completely submerged in water

Record what the measurement of water in milliliters before placing the unidentified object into the graduated cylinder

Gently place the unidentified object into the graduated cylinder

Record the measurement of the water in milliliters after placing the unidentified object into the graduated cylinder

Subtract the measurement of water in milliliters before placing the unidentified object into the graduated cylinder from the measurement of the water in milliliters after placing the unidentified object into the graduated cylinder, this is the volume of the unidentified object

Record the volume (the answer you got in step 10) of the unidentified object in the data table

Weigh the unidentified object on the scale, this is the mass of the unidentified object

Record that number in the data table

Calculate the density of the object by dividing the mass by the volume and rounding it to the proper significant figure, Record the density of the unidentified object in the data table

Repeat the lab 2 more times and with each experiment record the data in the chart under the correct trial number corresponding with the correct

The hypothesis made, the density calculated in the experiment will stay the same because the density of the unidentified object will never change, was supported. The results support the hypothesis because in every trial the density always came out to 9g/mL. In trial one the mass was 71.16g, the volume was 8mL, and the density was 8.895g/mL, but when rounded to the proper sig fig came out to 9g/mL. In trial two the mass was 71.12g, the volume was 8mL, and the density was 8.89g/mL, but when rounded to the proper sig fig came out to 9g/mL. In trial three the mass was 71.14g, the volume was 8mL, and the density was 8.8925g/mL, but when rounded to the proper sig fig came out to 9g/mL. When averaged the mass was 71.14g, the volume was 8mL, and the density was 9g/mL. Errors that could have occurred are, not calculating the density correctly, not completely submerging the unidentified object with water in the graduated cylinder to get the volume, not rounding the sig figs correctly when finding the density, not measuring the unidentified object’s mass in grams, not measuring the unidentified object’s volume in milliliters, and not writing the correct units with the proper number or not the correct unit at all. The color of the unidentified object was a brownish-gold and the smell was metallic that reminded me of a penny, and