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Today in Science

Today in Science. You will Need: Pencil, Colored Pencils, Calculator Introduction to Density – Bookshelf – 2 sheets 4 sides Cornell Notes – Physical vs. Chemical – DO NOT TURN IN YET. Reminders. Test #1 – Parent Signature + 5 corrections and WHY YOU MISSED THEM- Due tomorrow

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Today in Science

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  1. Today in Science You will Need: Pencil, Colored Pencils, Calculator Introduction to Density– Bookshelf – 2 sheets 4 sides Cornell Notes – Physical vs. Chemical – DO NOT TURN IN YET

  2. Reminders Test #1 – Parent Signature + 5 corrections and WHY YOU MISSED THEM- Due tomorrow Test #1 Retakes – Schedule on front board

  3. Summary At the end of your Cornell Notes for Physical vs. Chemical: 1) Tell what the difference is between Physical & Chemical Changes…..or how can you determine whether a substance has gone through a physical or chemical change? 2) Why is density an effective way of identifying a specific type of matter?

  4. Intro to Density How tightly packed the particles are in a substance. vs. 1. What is mass effected by? A block of iron has very tightly packed compared to aluminum. 2. Will changing the volume change the density? NO. Density is a RATIO between mass and volume….the particles remain packed the same way no matter what the size of the sample.

  5. 3. What are three ways to find volume? • Use a G.C. • bxh • displacement Yes. You will have more particles so mass will increase. BUT the density is the same. vs. 4. Will changing the volume change the mass?

  6. 5. Will changing the mass change the density? Yes, less particles per volume = less density. vs. Yes. You will have more particles so mass will increase. Density is the same because particles are packed the same way. vs. 6. Will changing the volume change the mass? The density?

  7. Finding Volume • The length is 3 cm the width is 4 cm and the height is 5 cm. • The length is 4 dm, the width is 6 dm and height is 9 dm. The volume is? • The length is 10 m, the width is 4 meters the height is 7 meters. The volume is?

  8. Density of Common Metals Copy chart onto Cornell Notes

  9. Finding Density

  10. Comparing Volume, Density and Mass • Please Circle EITHER Same or Different….then complete the Sentence.

  11. Summary Answer in complete sentences: 11. Explain why a substance, such as iron, cut into different sizes, would still have the same DENSITY.

  12. Remember Test #1 – Signature + 5 Corrections & why you missed them Due tomorrow

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