Matter+lab

Expansion and Contraction Lab
 **Problem:What will the balloon do if I change the temperature (of what?) ?**


 * Research:Hot water energy expands-cold water energy contracts.** (What does it mean to expand/contract?)

If we place the bottle in the cold water than the balloon will contract.**
 * Hypothesis:If we place the bottle in the hot water than the balloon will expand.


 * 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. 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.


 * Results:**

Use adjectives to describe what the balloon looks like. 
 * Water Temperature || Prediction || Description of the Balloon ||
 * Room Temperature || It will do nothing || nothing happened ||
 * Warm || It will expand || It expanded ||
 * Cold || It will contract || It contracted ||
 * Conclusion:My hypothesis was correct. I stated that if we placed the bottle in the warm water than the balloon would expand and if we placed the bottle in cold water than it would contract.My results showed that when the bottle was in room tempeture it stayed the same and when we placed the bottle in the hot water it expanded and when we placed the bottle in the cold water it contracted. This proved my hypothesis.**

75% ||
 * 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 || 15/20