CHEM.SCI.8.B

Calculate the number of atoms or molecules in a sample of material using Avogadro's number.

Chemistry · Texas Essential Knowledge and Skills (TEKS) · TEKS 2022

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Vocabulary
number of atomsnumber of moleculessamplematerialAvogadro's number
Skills
  • calculate (number of atoms in a sample using Avogadro's number) #dok2
  • calculate (number of molecules in a sample using Avogadro's number) #dok2
  • use (Avogadro's number in mathematical calculations) #dok1
  • convert (between moles, atoms, and molecules) #dok2
Learning Targets
  • I can recall the value of Avogadro's number. #dok1
  • I can use Avogadro's number to convert between moles and number of particles. #dok1
  • I can calculate the number of atoms in a given sample of material using Avogadro's number. #dok2
  • I can calculate the number of molecules in a given sample of material using Avogadro's number. #dok2
  • I can convert a chemical quantity from grams to moles and then to number of particles for various samples. #dok2
Big Ideas
  • The concept of the mole connects the atomic scale to the macroscopic world.
  • Avogadro's number allows chemists to quantify the number of fundamental particles in a given amount of substance.
Essential Questions
  • How does Avogadro’s number relate to the concept of the mole?
  • Why is counting atoms or molecules important in chemistry?
  • How can we use Avogadro’s number to determine the number of particles in a sample?
  • What steps are involved in converting between mass, moles, and number of particles in a chemical sample?