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Lab Format

This version was saved 11 years ago View current version     Page history
Saved by kevin gortney
on July 16, 2010 at 12:56:37 pm




I. PURPOSE:   Write a full description of the lab (why the lab is being

performed).  Include a hypothesis statement.   List the variables: 1) controlling (same for all), 2) manipulated (one you’re changing) and 3) responding (one you’re measuring).


II. MATERIALS: List all materials used.


III. PROCEDURE: List and number each of the steps in the order you did them.


IV. DATA TABLES & GRAPHS:  Data Tables and/or Graphs may be

attached to the back of your lab report.   All Data Tables and/or Graphs must have a Title.   Data tables should be neat, with units and values marked. Graphs should be neat, done on the computer and must have the following:

1) a title,  2) x and y-axis labeled with units.

Make graphs online using this website: http:/nces.ed.gov/nceskids/createagraph/


V. CONCLUSION: The conclusion will include a summary of your data

with the exact numbers, a summary of the lab, the meaning and

connection to the class and will show that the hypothesis is supported

or not supported.


Example of a Lab report:  You watch your mother or father cooking spaghetti by boiling pasta in water.  You notice that salt was added to the water before boiling and you wonder why they did this.  Your parents tell you that adding salt to the water adds flavor to the spaghetti pasta.  You wonder if it affects how the spaghetti cooks- if adding salt has any affect on the boiling temperature of water.  Your question: How does salt affect the boiling temperature of water?


I.  Purpose:  The purpose of this investigation is to see how salt affects the boiling temperature of water.  My hypothesis is adding salt lowers the boiling temperature of water.  The control variables will be using the same thermometer, same type and amount of water, same cooking pot each time.  The manipulated variable is the salt that will be added to the water.  The responding variable is the boiling temperature of the water (what is being measured).


II.  Materials:     Table salt             Distilled Water          2 Qt Cooking Pot

                         Measuring cup     Measuring spoons     Thermometer

                         Stirring spoon


III.  Procedure:

     1) Add 1 quart of distilled water to cooking pot and place on stove.

     2) Use the thermometer to record the highest temperature of the boiling water.

     3) Repeat step one above except add one tablespoon of salt to the water and stir to      dissolve.

     4) Use thermometer to record the highest temperature of the boiling saltwater.

     5) Repeat step one above except add two tablespoons of salt to the water and stir to      dissovle.

     6) Use thermometer to record the highest temperature of the boiling saltwater.


IV.  Data Table/Graph

Amout of Salt added to water

                             Boiling Temperature in oF

No salt added
212.9 oF
1 Tablespoon Salt
215.6 oF
2 Tablespoon Salt
218.3 oF


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