Title:
Name and group member:
Date of Experiment:
INTRODUCTION:
a. Background Information: In this lab we are learning about…….. Important vocabulary words to define for the lab are: osmosis, hypertonic solutions, hypotonic solutions, isotonic solutions, and cell membranes. Osmosis is….. (provide definition for osmosis here). A hypertonic solution is a solution where………… (describe what hypertonic solution is). A hypotonic solution is a solution where……. (describe what a hypotonic solution is). An isotonic solution is a solution where…… (describe what an isotonic solution is). The cell membrane’s function is …………
Cell and water transport is important in our bodies because……….
b. Purpose of the Lab: The purpose of this lab was to….. In this lab we were investigating…..
This lab relates to our class because we are learning about…….
c. Hypotheses:
VINEGAR: If an egg is placed in vinegar overnight, then its mass will………
SOLUTION ONE: If an egg is placed in overnight, then its mass will……..
SOLUTION TWO: If an egg is placed in overnight, then its mass will…….
PROCEDURE:
a. Materials List (list of all supplies that YOU used in the lab):
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b. Procedure: (Write the procedures for each part IN YOUR OWN WORDS below).
Part One: Pre-lab preparation (Vinegar)
1.
2.
3.
4.
Part Two: Hypertonic Solution ( )
1.
2.
3.
4.
Part Three: Hypotonic Solution ( )
DATA/RESULTS:
a. Data table: Attach your data table from your experiment to this lab report (you don’t have to create a new data table!!!)
b. Written Description of Data:
My data table shows……. After being placed in vinegar overnight, the mass of the egg……. (Answer whether it increased or decreased). After being placed in the vinegar, the egg had % change in mass. After being placed in Solution 1: overnight, the mass of the egg…… (Answer whether it increased or decreased). After being placed in Solution 1: the egg had % change in mass. After being placed in Solution 2: overnight, the mass of the egg……. (Answer whether it increased or decreased). After being placed in the Solution 2: , the egg had % change in mass. The total % change in mass was…….%.
c. Qualitative Data Information:
After the egg was soaked in vinegar it looked like…… The smell of the egg after being placed in the vinegar was……. The overall shape of the egg was……. (did it change shape from the day before or did it stay the same?) After the egg was soaked in (solution one) it looked like….. The smell of the egg after being placed in the (solution one) was….. The overall shape of the egg…. (did it change shape from the day before or did it stay the same?) After the egg was soaked in (solution two) it looked like…. The smell of the egg after being placed in the (solution two) was….. The overall shape of the egg was….. (did it change shape form the day before or did it stay the same?)
CONCLUSION:
a. Restate purpose: The purpose of this lab was to….. In this lab we were investigating…..
This lab relates to our class because we are learning about…….
b. and c. Restate hypotheses, accept or reject, and explain why:
VINEGAR: If an egg is placed in vinegar overnight, then its mass will………
The vinegar hypothesis is accepted/rejected because……
SOLUTION ONE: If an egg is placed in overnight, then its mass will……..
The hypothesis is accepted/rejected because……
SOLUTION TWO: If an egg is placed in overnight, then its mass will…….
The hypothesis is accepted/rejected because…..
d. Error analysis:
Potential errors that may have occurred in the lab include:……… These would have impacted the results because…….
e. New Questions/changes:
One aspect that could have been changed or improved about the lab is…….
One new question that I have after completing this lab is…….
One future test that I would be interested in trying after this lab would be……