Observations and Inferences
Purpose:
With the information discussed in class and your scientific skills, describe your bubble gum using the two types of observation.
Materials: electronic balance, ruler, wax paper, chewing gum
Pre-lab:
On your answer sheet , list and describe the two types of observation.
1.
2.
When making (a) observations, an instrument is used to make measurements. These measurements must be (b) and (c) . They must also be repeatable by others.
Lab:
1. Obtain a piece of Bedford County Public Schools Approved Bubble Gum and a piece of wax paper.
2. BEFORE chewing, make 3 qualitative and 3 quantitative observations.
(Use the wax paper or your wrapper to place your gum on the balance, because spreading pathogenic organisms would be seriously frowned upon)
3. Carefully, chew your gum and make 3 qualitative observations.
(notice that it says qualitative NOT quantitative...why?)
4. AFTER chewing, make 3 qualitative and only 1 quantitative observations.
5. Stick your gum on the designated piece of paper and sign your name by it.
6. Throw away your trash and WASH YOUR HANDS!
7. Answer the questions that follow the lab on your answer sheet.
Discussion & Conclusion
1. On your answer sheet, describe your findings.
2. On your answer sheet, describe what you noticed about the masses of your gum.
3. On your answer sheet, explain why you think those results occurred?

Bubble Gum Answer Sheet Name:
If you are answering on this document to send electronically, please put your data and responses in a different font that makes it easier for me to differentiate your answers.
Prelab:
1. **
2. ** a. b.
**
** c. **
Data:
Qualitative Quantitative
BEFORE 1. **
2. **
3. **
DURING 1. **
2. **
1.
2.
3.
**
**
** none
3. **
AFTER 1. **
2. **
3. **
1.
Discussion & Conclusion
1. Describe your findings. **
2. Describe what you noticed about the masses of your gum. **
3. Why do you think those results occurred? **
**