ABBS crossword game - Identify the SI Base Units

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Across
  1. 4. SI unit for measuring the amount of substance of a system
  2. 6. SI unit for measuring length
  3. 7. SI unit to measure luminous intensity of a light source
Down
  1. 1. the SI unit for measuring mass
  2. 2. SI unit for measuring thermodynamic temperature
  3. 3. SI unit for constant flow of electric current
  4. 5. SI unit for duration of time