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Billy Conlan

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Submitted By Eryk22
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LAB GRAPHICAL ANALYSIS: OBSERVATIONS OF A BURNING CANDLE

Purpose:

• To make qualitative and quantitative observations of a burning candle • To determine if candle diameter affects burning rate

Pre-Lab:

• Good observational technique is an important skill for the scientist • Observations may be qualitative or quantitative • Distinguish an interpretation from an observation: an interpretation is a conclusion based on observations • It is important for the scientist to record all observations during the experiment, not later • Set up a data table in your lab notebook before beginning the procedure

Procedure:

1. Record qualitative and quantitative observations of the 3 different size candles before lighting. Be sure to include the diameters (cm) of the candles.
2. Light the first candle and record its height every 60 seconds. If the candle is still burning after 15 minutes, blow out the flame and stop recording measurements.
3. Repeat the experiment with the other candles.

Questions:

1. What is the accuracy of the ruler used in this lab?

2. Identify the dependent and independent variables.

3. Explain how to calculate the average burning rate.

4. Is the relationship between time and height inverse or direct? Explain.

Name : _______________ Partner :_______________ Date : _______________
1) Do the experiment [Measuring – 5pts.]

2) What is the Purpose/Objective? [Formulating Scientific Questions – 2pts.] State the objective (purpose/problem)

3) How will I conduct the investigation (include a brief summary of the procedure)? [Data Collection – 3pts.]

4) Data/Graph? [Communicating Laboratory Findings -10pts.]

1. On a computer, construct a data table (make sure labels are on the

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