If you fail, never give up because FAIL means 'First Attempt In Learning'.— A. P. J. Abdul Kalam

Atoms and Molecules — quick quiz

5 real NSTSE questions on Atoms and Molecules. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.

Question 1 of 2

MEDIUM

How many moles of calcium carbonate (CaCO₃) are present in 25 g of it? (Given: Ca=40, C=12, O=16)