Grade 10 Chemistry Calculations Worksheet
This worksheet covers fundamental chemistry calculations including stoichiometry, molar mass, and concentration for Grade 10 science students.
Includes
Standards
Topics
Chemistry Calculations
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Read each question carefully and show all your work for calculation problems. Use the provided space for your answers.
1. What is the molar mass of water (H₂O)? (Atomic masses: H=1.01 g/mol, O=16.00 g/mol)
17.01 g/mol
18.02 g/mol
19.01 g/mol
2.02 g/mol
2. The law of states that matter cannot be created or destroyed in a chemical reaction.
3. One mole of any substance contains particles, a number known as Avogadro's number.
4. Calculate the number of moles in 50.0 grams of CaCO₃. (Atomic masses: Ca=40.08 g/mol, C=12.01 g/mol, O=16.00 g/mol)
5. What is the concentration (in Molarity) of a solution prepared by dissolving 15.0 grams of NaCl in enough water to make a 250 mL solution? (Atomic masses: Na=22.99 g/mol, Cl=35.45 g/mol)
6. In a balanced chemical equation, the coefficients represent the number of moles of each reactant and product.
True
False
7. For the reaction: 2H₂ + O₂ → 2H₂O, if you start with 4.0 moles of H₂, how many moles of H₂O can be produced?
Match the term with its definition.
8. Molarity
a. The mass of one mole of a substance
9. Mole
b. A unit of concentration, moles of solute per liter of solution
10. Molar Mass
c. The SI unit for amount of substance