stuff
If you are a Creationist the answer is God, if not then the answer is they just exist. or scientists found them and put it into the periotic table. Scientists may have discovered them, they certainly didn't invent them, and I think you mean the periodic table of elements.
Dobereiner tried to discover a rational classification of chemical elements.
Sure, please provide the plot elements you'd like me to arrange.
Certainly - please provide the plot elements you would like me to order.
scientist found out about the bones and named them by what they look like.
Scientists put limitations in their work in order to remain ethical in their work. They also do so as a precautionary measure in case something goes wrong.
okay, so people commonly ask about the periodic table. The truth is scientists fought over this, so this answer may vary but, honestly there are 115-118 elements if you put any of those numbers you are correct.
Elements are organized into families on the periodic table based on their similar chemical properties. Elements in the same family have the same number of valence electrons, which determines their reactivity and chemical behavior. This organization helps scientists predict the properties of unknown elements based on their location in the periodic table.
Elements were originally placed in order of atomic massnow they are placed in order of atomic number
they put them into groups!
you look at the first letter of the words you have and go by the alphabet . example your words are art music computer. the alpabetic order is art computer and finally music . that is how you put things in alphabetic order if all of the first letters are the same then you look at the second letter, you look at it like the alphabet and go by that. hopefully this helped you.
a graphic organizer and a chart that is used to put things in order