Introduction to Mole Conversions
This worksheet introduces grade 9 students to the concept of the mole and fundamental mole conversions in chemistry.
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Introduction to Mole Conversions
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Read each question carefully and provide the best answer. Show all your work for calculations.
1. What is the value of Avogadro's number?
6.02 x 10^22
6.02 x 10^23
1.00 x 10^23
1.00 x 10^22
2. What is the molar mass of H₂O (water)? (Atomic masses: H=1.01 g/mol, O=16.00 g/mol)
17.01 g/mol
18.02 g/mol
1.02 g/mol
34.02 g/mol
3. One mole of any substance contains particles.
4. The unit for molar mass is .
5. How many moles are in 36.04 grams of H₂O? (Atomic masses: H=1.01 g/mol, O=16.00 g/mol)
6. How many particles are in 2.5 moles of NaCl?
7. The molar mass of an element is numerically equal to its atomic mass.
True
False
8. Avogadro's number is used to convert between moles and grams.
True
False
9. Label the diagram below with the terms: 'Molar Mass', 'Avogadro's Number'.
From Mass (grams) to Moles:
From Moles to Number of Particles:
Describe how you would convert from Number of Particles to Mass (grams):