Chemistry Definitions

Very good quiz with good definitions, though you tend to repeat yourself a few times, you tend to repeat yourself a few times, you tend to repeat yourself a few times, you tend to repeat yourself a few times, you tend to repeat yourself a few times, you tend to repeat yourself a few times, you tend to repeat yourself a few times, you tend to repeat yourself a few times.

haha true that ;) 

quite good :)

question 20 the answer isnt there, that definition corresponds to relative atomic mass :/