Mater+Labs

Expansion and Contraction Lab
 **Problem: What happen (to the balloon) if we put the bottel in warm and cold water?**  **Research:Putting the bottel in cold and warm water (Explain expand/contract to provide background information)**  **Hypothesis:If we put the bootel in the warm water then it will blow up.** (What about the cold?)  **Materials: Safety goggles, Balloon,** **Plastic bottle, Warm water,** **Cold water**  **Procedure:**  1.) Stretch the opening of the balloon over the neck of the bottle. 2.)  Observe the balloon at room temperature. Record observations. 3.) Place the bottle with the ballon in the warm water for about 30 seconds. 4.) Observe the ballon again and record any changes you see in the balloon. <span style="font-family: Tahoma; font-size: 14pt; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: Tahoma; msobidifontsize: 12.0pt; msofareastfontfamily: Tahoma; msolist: Ignore;">5.) Remove the bottle and ballon from the warm water and quickly place it in the cold water for about 30 seconds (or until it cools). 6.) Observe the ballon and record any changes you see in the ballon. <span style="font-family: Tahoma,Geneva,sans-serif; font-size: 12pt; mso-bidi-font-size: 12.0pt; msobidifontsize: 12.0ptmsoBidiFontSize;"> <span style="font-family: Tahoma,Geneva,sans-serif; font-size: 12pt; msobidifontsize: 12.0ptmsoBidiFontSize;">**Results:**

Use the physical characteristics to describe tha balloon. <span style="font-family: Tahoma,Geneva,sans-serif; font-size: 12pt; mso-bidi-font-size: 12.0pt; msobidifontsize: 12.0ptmsoBidiFontSize;"> <span style="font-family: Tahoma,Geneva,sans-serif; font-size: 12pt; msobidifontsize: 12.0ptmsoBidiFontSize;">**Conclusion:** You can see our predction was right. (Look at your notes or past labs to write a proper conclusion).
 * Water Temperature || Prediction || Description of the Balloon ||
 * Room Temperature || warm || the bolloon stayed flat ||
 * Warm || bolloon will blow up || it got a little bigger ||
 * Cold || stay the same || stay the same ||

35% ||
 * I can state a hypothesis related to the problem and procedure. || I can conduct research about concepts that are related to the topic I am investigating. || I can collect quantitative/qualitative data while conducting an experiment. || I can use the data in my results to draw a conclusion about what happened and why. || Overall, I can apply the scienctific method to solve a problem. || Total ||
 * 1 **2** 3 4 || **1** 2 3 4 || 1 **2** 3 4 || **1** 2 3 4 || **1** 2 3 4 || 7/20