Here are the solutions to the problems on the worksheet, worked out step by step.
1. Density of the bread
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Given: Mass = 500 g, Volume = 2500 cm³
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Formula: Density = Mass / Volume
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Calculation: $500 / 2500 = 0.2$
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Answer: The density is
0.2 g/cm³.
2. Density of the block of wood
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Given: Mass = 6.0 g, Volume = 12.0 cm³
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Formula: Density = Mass / Volume
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Calculation: $6.0 / 12.0 = 0.5$
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Answer: The density is
0.5 g/cm³.
3. Mass of the substance
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Given: Density = 4.0 g/cm³, Volume = 25 cm³
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Formula: Mass = Density × Volume (as hinted in the problem)
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Calculation: $4.0 \times 25 = 100$
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Answer: The mass is
100 g.
4. Volume of the lead ball
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Given: Mass = 420 g, Density = 10.5 g/cm³
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Formula: Volume = Mass / Density (as hinted in the problem)
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Calculation: $420 / 10.5 = 40$
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Answer: The volume is
40 cm³.
Final Answer:
1. 0.2 g/cm³
2. 0.5 g/cm³
3. 100 g
4. 40 cm³
Parent Tip: Review the logic above to help your child master the concept of density questions worksheet.
