What does this translate to in english ko tsu chi ni ten ga tsutano ni こつちに転がったのに and which if anything are particles in the sentence?

Answer 1

Well what you wrote in Japanese and how you wrote it in English are two different things! 転がった reads (korogatta) and here it could mean both 'fell down' and 'lay down' (past tense of lie down). Tsuchi means 'earth, ground, soil' but 'kotsuchi' is a name and doesn't normally fit in the sentence here. (I take it you meant tsuchi ni korogatta no ni.)

Overall it means "Even though (I/he/she..) fell down on/lay down on the ground.."

If you're sure 'Kotsuchi' is what you need, just replace the name with the word 'ground' in the sentence

As for particles に (in, at , on, to etc) and のに (even though, and yet, in spite, despite the fact that.., etc) are the two particles in this sentence.