Scientific Figures Worksheet
A Grade 10 Science worksheet covering significant figures, scientific notation, and calculations involving them.
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Scientific Figures Practice
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Read each question carefully and provide your answer in the space provided. Pay close attention to significant figures in your calculations and final answers.
Determine the number of significant figures in each of the following measurements:
1. 0.0050 g:
2. 10.050 mL:
3. 2500 cm:
4. 3.00 x 10^4 kg:
5. 789.0 L:
Convert the following numbers to scientific notation with the correct number of significant figures:
6. 0.000000345 m
7. 6,780,000,000 atoms
8. 120.0 km
9. A student measures the length of a desk as 1.25 m and its width as 0.70 m. What is the area of the desk, expressed with the correct number of significant figures?
0.875 m^2
0.88 m^2
0.9 m^2
0.87 m^2
10. Add the following measurements and express the answer with the correct number of significant figures: 12.5 g + 3.05 g + 0.008 g
15.558 g
15.56 g
15.6 g
16 g
11. Explain why it is important to use significant figures in scientific measurements and calculations.
12. A solution has a concentration of 2.50 mol/L. If you need 0.125 L of this solution, what mass of solute (molar mass = 100.0 g/mol) is required? Express your answer with the correct number of significant figures.