The Bottle and the Balloon

Transcription

1 The Bottle and the Balloon The Bottle and the Balloon 1. Hold the bottle with the balloon attached to the top in the hot pot of hot water for 2 minutes (see Figure 1.1). Answer all questions In your science notebook. Restate the questions in your answer. Answer in your complete sentences, using your observations to support your answers. What happened when you placed the bottle in the pot of hot water? Thermometer Hot pot containing water at C Figure 1.1 Place the bottle in the hot pot of hot water and hold it there for 2 minutes. 2. Hold the bottle in the ice water for 1 minute. (If the ice has melted, you may need to add more.) What happened when you placed the bottle in the ice water? 3. Explain your observations in your science notebook. Draw and label diagrams of the investigation.

2 Similar Objects Similar Objects Make a table in your science notebook. Object A. Volume of Water Before putting in the object (ml) B. Volume of Water After putting in the object (ml) Clay Ball Rectangular Block 1. Put exactly 50 milliliters (ml) of water into the graduated cylinder (see Figure 1.2). Record the volume of water in Table 1 in your science notebook. Figure 1.2 Fill exactly half of the graduated cylinder with water. Measure and record the volume of water before adding the ball. Graduated cylinder Clay ball Water 2. Put the ball into the cylinder. Avoid splashing the water. 3. Record the volume of the water and the ball on the table in your science notebook. 4. Repeat the procedure using the rectangular block. 5. Use the data you have collected to calculate the volumes of the two objects. Record your results in the table. Volume = New Volume (B)- Original Volume (A) Investigation Continue on BACK

3 In your science notebook, answer the following questions. Restate the question in your answer. Answer in your complete sentences, using your observations to support your answers. 6. How could you find out whether the two objects contain the same amount of matter? Write your ideas in your science notebook. Draw and label diagrams to help explain your thinking. 7. Return the apparatus to its original condition for the next group.

4 Describing Matter Describing Matter Make a table in your science notebook. Be sure to include space to write observations and draw pictures. Method of Observation Sugar Cube Granulated Sugar Powdered Sugar EYES MAGNIFING LENS TOUCH 1. Put 1 spoonful of each sugar sample on a plate with the correct label. 2. Method of Observation- EYES Start with the sugar cube. Using ONLY your naked eye, make observations about the sugar cube. (color, texture, size, shape, etc.) Record your observations in table in as much detail as possible. Do the same for granulated sugar and the powdered sugar.

5 3. Method of Observation- MAGNIFING LENS Start with the sugar cube. Using the magnifying lens, make observations about the sugar cube. (color, texture, size, shape, etc.) Record your observations in table in as much detail as possible. Do the same for granulated sugar and the powdered sugar. 4. Method of Observation- TOUCH Start with the sugar cube. Rub the sugar cube between your fingers. Make observations of the sugar cube. (texture) Record your observations in table in as much detail as possible. Do the same for granulated sugar and the powdered sugar, putting only a small amount between your fingers. In your science notebook, answer the following questions. Restate each question in your answer. Answer in your complete sentences using your observations to support your answers. What differences did you observe when you looked at the sugar samples with our naked eye? What differences did you observe when you looked at the sugar samples with the magnifying lens? How are the sugar samples alike? Which sugar sample do you think contains more small pieces, or particles of sugar, the spoonful of granulated sugar or the spoonful of powdered sugar? Explain.

6 Adding Water Adding Water Make a table in your science notebook. Be sure to include space to write observations and draw pictures. Substance A Substance B Dry Wet 1. Place a clean, dry petri dish on the table in front of you. 2. Use the lab scoop to place a few grains of substance A on one side of the dish. 3. Use tweezers to place a crystal of substance B on the other side of the dish. 4. Use a magnifying glass to examine each substance. Draw a picture of what you see in table. 5. Using a dropper, slowly add 20 drops of water to each substance.

7 6. Look at the substances again using the magnifying glass. Make a drawing of each substance. In your science notebook, answer the following questions. Restate the question in your answer. Answer in your complete sentences, using your observations to support your answers. 7. What happened to each substance when water was added to it? How did the two substances behave differently after water was added? Place the used petri dish in the plastic box provided.

8 Mixing Liquids Mixing Liquids 1. Look at the contents of the bottle. 2. Shake the bottle two times. Allow it to stand for 2 minutes. In your science notebook, answer the following questions. Restate the question in your answer. Answer in your complete sentences, using your observations to support your answers. 3. What do you observe? Write your description in your science notebook. 4. What do you know about the two substances in the bottle? Using your observations, write in your science notebook everything you know about the two substances.

9 Floating and Sinking Floating and Sinking 1. In your science notebook, answer the following question. Restate the question in your answer. Answer in a complete sentence. What makes and object sink or float? 2. Make a T-Chart in your science notebook. Predictions: Sink Float 3. Look at each of the items in the box. Make a prediction; Which items will sink and which items will float? List each item in the T-Chart. 4. Place each item in the water, ONE at a TIME. Did it sink? Did it float? Circle the items in the T-Chart that did what you predicted it would do. **Take the item out of the water and place it on the paper towel to dry before you place a new item in the water. In your science notebook, answer the following question. Restate the question in your answer. Answer in a complete sentence, using your observations to support your answer. Why do objects sink or float? Using your observations, write a rule for sinking and floating.