1. Experimental Variables

2. A variable is any factor or condition that can exist in differing amounts or types. An experiment usually has three kinds of variables: independent, dependent, and controlled. The independent variable is the one condition that you change in an experiment. To ensure a fair test, a good experiment has only one independent variable.fair test As the scientist changes the independent variable, he or she observes what happens.

3. The dependent variable is the variable that you measure or observe. The dependent variable gets its name because it is the factor that is dependent on the state of the independent variable. A controlled variable or constant variable is a variable that does not change during an experiment. Additional tests are often done within an experiment to ensure that both the equipment and reagents are functioning properly. positive control: a positive control should give the desired outcome of the experiment, provided that all the reagents and equipment are functioning properly. negative control: a negative control should be designed to not give the desired outcome of the experiment.

4. Requirements for Labs Title The title of the report should be specific and explain exactly what was studied. Introduction Identify the problem or issue and give background information about the problem or theory behind the topics being studied. This information should include justification as to why you conducted the experiment. You should end your introduction with a purpose statement. Specifically answer the question that the experiment was designed to answer in a single sentence.

5. This is the only section of the lab report that does not have to be written in the past tense. All information not previously studied should be properly referenced. Do not use pronouns, such as I, you, we, etc. Do not plagiarize including copying your friend/neighbours work In the intro: Hypothesis A useful hypothesis is a testable statement which includes an informed prediction. It involves a statement about what you will do and what you expect will happen.

6. Results Observations Write out your results, what was actually seen, etc. Tables and graphs should be used to supplement the text and to present the data in a more understandable form. Analysis: Summary of trends/observations found in data (refer to specific data).

7. Discussion/Conclusion: Answer questions on the lab sheet Discusses why you observed what you did, how it happened, and how it related to the purpose. Should refer to data

8. Tables and Figures All tables and figures must have self-explanatory titles so that the reader can understand their content without the text. Tables and figures are assigned numbers in the order they are mentioned in the text. Tables are labelled at the top and figures at the bottom.