Chapter 3 Resource: Matter and its Changes

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Name Date Class Laboratory Activity 1 (continued) Hands-On Activities 8. Add water to the graduated cylinder until it is about half full. Read the volume of water in the graduated cylinder and record it in Table 2 as the original volume of water. 9. Tilt the graduated cylinder slightly and carefully slide Rock A into the graduated cylinder. Be careful not to splash any water out of the graduated cylinder. 10. Read the water level in the graduated cylinder again. Record the volume in the table. Data and Observations Table 1 11. Find the volume of the rock by subtracting the original volume of water from the new volume of water and the rock. Record the rock’s volume. 12. Calculate the density of Rock A by dividing its mass by its volume. Record the density in the table. 13. Repeat steps 8 through 12 for Rock B. Block Mass Length Width Height Volume Density (g) (cm) (cm) (cm) (cm3) (g/cm3) A B C Table 2 Mass (g) Original volume of water (mL) Volume of water after adding rock (mL) Volume of rock (mL) Density (g/mL) Rock A Questions and Conclusions 1. Are any of the metal blocks made of the same substance How do you know Rock B Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc. 10 Matter and Its Changes
Name Date Class Laboratory Activity 1 (continued) 2. Refer to Table 3 below. Could any of the blocks be made of one of the metals in the chart On what are you basing your conclusion Table 3 Density Table Hands-On Activities Metal Density (g/cm 3 ) Aluminum 2.7 Copper 8.9 Gold 19.3 Iron 7.9 Lead 11.3 Steel 7.8 Zinc 7.1 Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc. 3. How did the densities of your two rocks compare 4. If both samples of rock came from the same larger rock, what possible reasons could you give to explain any different measured values of density Strategy Check Can you measure the mass and volume of several samples of solids Can you calculate the density of each solid Can determine if any of the samples are made of the same substance Can you identify samples based on their densities Matter and Its Changes 11
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Chapter 3 Resource: Matter and its Changes

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