Isotones are nuclides that have the same neutron number but a different proton number. Therefore the answer is C. boron and carbon.
Iron filings can be attracted by the magnet whereas salt can not. So the mixture can be separated by a magnet
It suggests that life changes over time by showing different animals at different stages in their life, also giving more than one example on how they can change during early development and throughout their lives
A solid is hard and the molecules are packed together, a liquid can move around freely because the molecules aren't as packed together :)
Add 450 million grams to the solution
