matter+lab

Expansion and Contraction Lab
 **Problem:What will happen to the ballon when you put it on a water bottle and stick it in cold and hot water?**  **Research:Hot air rises. cold air sinks.**  **Hypothesis:If i put a water bottle with a ballon on it in hot water then it will expand.If i put it in cold water then it will contract.**  **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 balloon in the warm water for about 30 seconds. 4.) Observe the balloon 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 balloon from the warm water and quickly place it in the cold water for about 30 seconds (or until it cools). 6.) Observe the balloon and record any changes you see in the 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;">**Results:** <span style="font-family: Tahoma,Geneva,sans-serif; font-size: 12pt; mso-bidi-font-size: 12.0pt; msobidifontsize: 12.0ptmsoBidiFontSize;"> Use the physical characteristics to describe the 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:My hypothesis was correct. I stated that if i put a water bottle with a balloon on it in hot water then it will expand. Then i said if i put it in cold water then it will contract.** (Use your results to support your conclusion.)
 * Water Temperature || Prediction || Description of the Balloon ||
 * Room Temperature || stay normal || stayed how it was ||
 * Warm || expand || got bigger ||
 * Cold || contract || got smaller ||

75% ||
 * 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 || 15/20