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Grade 7 Density Worksheet with Answers

Grade 7 (US) · Year 8 (UK) · Class 7 (India) · Science

Unit 4: Introduction to ChemistryChanges in MatterNGSS MS-PS1-2

Calculating density, mass and volume, and predicting whether objects sink or float. This free middle school worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.

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Density

Grade 7 · Science

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Learning goal: Changes in Matter · NGSS MS-PS1-2

Directions: Read each question carefully and write your answer on the line. Use the diagram to help you.

Example

An object has a mass of 54 g and a volume of 9 cm³. What is its density?

Answer: 6 g/cm³

RememberDensity

mDVdensity = mass ÷ volumemass = density × volumevolume = mass ÷ densityWater is 1 g/cm³: denser things sink.
  1. 1

    An object has a density of 0.9 g/cm³. Will it sink or float in water (1 g/cm³)?

    ?object: 0.9 g/cm³water: 1 g/cm³
  2. 2

    An object has a mass of 12 g and a density of 1.5 g/cm³. What is its volume?

    m = 12 gD = 1.5 g/cm³V = ?
  3. 3

    An object has a mass of 20.8 g and a volume of 26 cm³. What is its density?

    m = 20.8 gV = 26 cm³D = ?
  4. 4

    An object has a mass of 15 g and a volume of 6 cm³. What is its density?

    m = 15 gV = 6 cm³D = ?
  5. 5

    An object has a mass of 59.4 g and a volume of 22 cm³. What is its density?

    m = 59.4 gV = 22 cm³D = ?
  6. 6

    An object has a mass of 15 g and a volume of 10 cm³. What is its density?

    m = 15 gV = 10 cm³D = ?
  7. 7

    An object has a density of 2.7 g/cm³. Will it sink or float in water (1 g/cm³)?

    ?object: 2.7 g/cm³water: 1 g/cm³
  8. 8

    A material has a density of 4 g/cm³. What is the mass of 18 cm³ of it?

    D = 4 g/cm³V = 18 cm³m = ?
  9. 9

    A material has a density of 1.5 g/cm³. What is the mass of 32 cm³ of it?

    D = 1.5 g/cm³V = 32 cm³m = ?
  10. 10

    A material has a density of 7.9 g/cm³. What is the mass of 28 cm³ of it?

    D = 7.9 g/cm³V = 28 cm³m = ?
  11. 11

    An object has a mass of 30.4 g and a volume of 38 cm³. What is its density?

    m = 30.4 gV = 38 cm³D = ?
  12. 12

    An object has a density of 1.5 g/cm³. Will it sink or float in water (1 g/cm³)?

    ?object: 1.5 g/cm³water: 1 g/cm³

★ Challenge corner for fast finishers

Why does a spinning ice skater spin faster when she pulls her arms in?

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Teacher's comments

Free printable worksheets with answer keys · aethelsystems.com/worksheets/science/7/density

Answer key (click to show)
  1. 1.float
  2. 2.8 cm³
  3. 3.0.8 g/cm³
  4. 4.2.5 g/cm³
  5. 5.2.7 g/cm³
  6. 6.1.5 g/cm³
  7. 7.sink
  8. 8.72 g
  9. 9.48 g
  10. 10.221.2 g
  11. 11.0.8 g/cm³
  12. 12.sink
  13. ★conservation of angular momentum (challenge corner)

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