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Grade 10 · Science

Grade 10 Chemistry worksheet

20 questions on chemistry. The answer key is a separate download.

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What is on the worksheet

  1. An ideal gas occupies 14 L at 270 K. With pressure and amount fixed, find its volume at 810 K in L.

  2. Dilute 270 mL of a 0.8 mol/L solution to 0.2 mol/L without losing solute. Find the final volume in mL.

  3. Dilute 210 mL of a 1.8 mol/L solution to 0.6 mol/L without losing solute. Find the final volume in mL.

  4. A hypothetical element has isotopes of mass 22 u (40%) and 24 u (60%). Calculate its mean atomic mass in u.

  5. In a simplified isotope exercise, atomic number Z = 10 and mass number A = 29. How many neutrons?

  6. Dilute 160 mL of a 0.3 mol/L solution to 0.1 mol/L without losing solute. Find the final volume in mL.

  7. A sample has mass 572 g and molar mass 52 g/mol. Find its amount in mol.

  8. A sample has mass 280 g and molar mass 70 g/mol. Find its amount in mol.

  9. Why does balancing an equation not by itself tell you how fast a reaction occurs?

  10. An ideal gas occupies 24 L at 200 K. With pressure and amount fixed, find its volume at 600 K in L.

  11. A sample has mass 50 g and molar mass 5 g/mol. Find its amount in mol.

  12. Dilute 100 mL of a 1.2 mol/L solution to 0.4 mol/L without losing solute. Find the final volume in mL.

  13. A hypothetical element has isotopes of mass 22 u (25%) and 26 u (75%). Calculate its mean atomic mass in u.

  14. In a simplified isotope exercise, atomic number Z = 29 and mass number A = 42. How many neutrons?

  15. An ideal decay model starts with 72 mg. What expected mass remains after 1 half-lives, in mg?

  16. An ideal decay model starts with 244 mg. What expected mass remains after 2 half-lives, in mg?

  17. A solution contains 16 mol of solute in a final solution volume of 16 L. Find concentration in mol/L as a fraction or decimal.

  18. A sample has mass 210 g and molar mass 30 g/mol. Find its amount in mol.

  19. In a simplified isotope exercise, atomic number Z = 21 and mass number A = 56. How many neutrons?

  20. Dilute 90 mL of a 6.3 mol/L solution to 0.9 mol/L without losing solute. Find the final volume in mL.

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