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Materials: 3 plastics of different shapes 3 balloons of different shapes Weighing scale
Procedure: 1. Prepare the materials on the table. 2. Inflate the 3 plastics and the 3 balloons. Observe what happens. Record their weight. 3. Describe the air inside the 3 plastics and 3 balloons. 4. Allow air out of the plastics and balloons. Weigh the plastics and balloons again. 5. Describe the air coming out.
Answer the following questions: 1. What is the shape of air inside the plastics and the balloons? 2. Compare the plastics and the balloons with air and without air. 3. What form of matter is air? 4. What are the characteristics of gases?
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