1. Proton is a i. positively charged particle
ii. negatively charged particle
iii. neutral particle
iv. all of these.
2.Write any 3 differences between noise and music.
3.Does pure water conduct electricity? If not, what can we do to make it
conducting?

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 answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).