matter+labs

Expansion and Contraction Lab
 **Problem: What changes (will takes place in the balloon) when it (the bottle) has been placed in cold water and hot water.**  **Research:** Expand- to take up more spce, Contract- to take up less space.  **Hypothesis: If I put the water bottle in the hot (then) it (the balloon) will expand and if its in the cold (then)it (the balloon)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 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:** <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; 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 when i put the bottle in warm water it will expand and in cold water it will contract. My results showed that the balloon puffed up and in the warm waterand in cold water the balloon was flat.**
 * Water Temperature || Prediction || Description of the Balloon ||
 * Room Temperature ||  || Small, Flat ||
 * Warm ||  || in hot water the balloon puffed up ||
 * Cold ||  || in the cold water it died down ||

85% ||
 * 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 || 17/20