Lab Report: Scientific Method

Your Name: __________________________________________________________________

Purpose of this Lab
What is the goal of this lab? What question is it trying to answer, or what problem is it trying to explain?

After reading the lab instructions - but before starting the lab - record your best “educated guess” about what will happen in the experiment. What hypothesis can you generate about the effect of adding salt to water?

Experimental Design
List the materials used in this lab, and the procedure you followed.




Procedure (list steps in the order in which you performed them):



Record the data you collected in the lab. (The data table and the graph.)

Table 2. Boiling point temperatures of various salt solutions.
Beaker/Concentration of NaCl (M)
Boiling Point Temperature
Pure tap water

1 tablespoon salt solution

2 tablespoon salt solution

3 tablespoon salt solution

Graph the data from Table 2
Label each axis (X and Y will NOT do).
Devise a scale for each axis and label that scale (1, 2, 3…)
Plot the data points.
Connect the data points by drawing a straight line.
Title the graph.
For assistance with creating graphs, please visit, "Create a Graph" at

Analyze the data you collected in the lab. How does the data presented above relate to the hypotheses you generated earlier in lab? Are any hypotheses disproved by your experiment? Use your graph to determine the boiling point of a solution made with 2 ½ tablespoons. This use of a graph has generated a hypothesis that a 2 ½ tablespoon solution boils at ____degrees C. Prepare a 2.5 M solution and verify your hypothesis.

Conclusion After conducting the experiment, how would you now explain the problem(s) or answer the question(s) raised when you...