Glow Stick Lab

Topics: Temperature, Energy, Chemical reaction Pages: 2 (686 words) Published: April 29, 2012
Glow Stick Lab – Informal
I believe the glow sticks will become ultimately brighter in the warmer temperature beaker as heat cause molecules and particles to move faster and rapidly thus producing energy where as when the glow stick is the cold temperature beaker I believe it will dim in light as energy id being taken away as particles are moving much slower and are closer to each other. Materials:

* Hot plate
* Two beakers (200mL)
* Two glow sticks
* Water
* Thermometer
* Beaker Tongs
1. Retrieve the materials needed to perform this experiment. 2. Take Beaker 1 and fill it ¾ full with refrigerated water (12 degrees Celsius). 3. Take Beaker 2 and fill it ¾ full with room temperature water. 4. Take the hot plate and let it heat as you place Beaker 2 on it. 5. Let the water heat up to 95 degrees Celsius before removal. 6. Use the Thermometer to measure your beakers.

7. Break the glow sticks and put them in the beakers and analyze which one is brighter and what is happening in each. 8. Analyze and record in your observation chart to what happened to the glow sticks after they were put in the two different temperate waters. Observations:

| Beaker 1 (cold)| Beaker 2 (hot)|
Temperature (degrees Celsius)| 12| 95|
Glow stick brightness before on scale of 1-10| 7/10 – Bright| 7/10 – Bright| Glow stick brightness after on scale 1-10| 4/10 – Dimmed| 10/10 – Very Bright|

Data Analysis:
1. Yes my prediction was correct as the glow stick has become intensely brighter when emitted into the hot temperature water while the other glow stick dimmed as it came in contact with the cold temperature water. This was due to the lack of energy being produced thus letting the glow stick particles to slow down. 2. When the glow stick was emitted into the warm water it became brighter as the light output increased. This is because to the increase of energy as heat produces light and...
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