What do a cat , worm , spider , and, cat have in common ? mind i'm only a 7th grader gust trying to get smarter don't judge , if it is a stupid question . you !

why do the isotopes of a particular element behave differently in nuclear reactions but the same in chemical reactions? chemical reactions involve changes to electrons in an atom; isotopes do not differ in electrons, and so they react the same way during chemical changes.

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

sure im new too!

explanation: