What happens during every chemical change? A. Heat or light is produced.
B. Two substances combine to make a different substance.
C. One type of matter becomes another type of matter.
D. Matter changes from one state to another.
pleaase hel

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98