Log inSign up

proton

proton
a positively charged subatomic particle found in the central core of every atom
The number of protons in the nucleus determines which chemical substance the atom represents.
From Lesson 3:Physical Sciences·TOEFL Academic Vocabulary

Note

The number of protons in the nucleus determines which chemical substance the atom represents.

Learn proton and more in TOEFL Academic Vocabulary

All course content and exercises are completely free — no paywalls, no trial periods.

  • ✓ Practice with interactive exercises
  • ✓ Track your progress with spaced repetition
  • ✓ Learn at your own pace — completely free
Start learning TOEFL Academic Vocabulary freeBrowse the full course