**Density**

background [prelab assignment (10 points) due at the begining of lab]

1. Based on the "Explain" section in ch. 1 of your ngss chemistry textbook about density, describe . . .

- experimental data
- graphical analysis
- experiental design
to determine the density of a solid ? liquid ?

2. Describe how to determine the volume of an irregular shaped solid object ? [hint: see below experimental materials]

purpose

determine the density of a solid or liquid using graphical analysis

materials

various coins; water, and rubbing alcohol

electronic balance

graduated cylinder

methods / data analysis

student design

**content of lab report** [12 points]

introduction

what is density ?

describe the graphical analysis to determine density & its basis

results

graphical analysis to determine density of coins

graphical analysis to determine density of liquids

compare densities among coins - informal / qualitative statistics

compare densities among coins - informal / qualitative statistics

**resources** (tutorials or file)

linest - linear regression tutorial

google sheets: video (error in R^2 value) ; text: 1 ; 2

excel: multiple graphs in a chart (text) ; linear regression (text)

qualitative statistics

tutorial: google sheets

file: matheamtica

file: excel