You can't break "gutem" into two words. "Gutem" is one word in it's declined form (dative form for masculine nouns). In English the only suffix which is used is the 's like in "my mom's house" and you can't break it either into "my mom s house". In German nouns and adwerbs and articles are all declined by adding different suffixes to the ends of the words.
Some examples with the word Zustand (masculine word):
- Das ist der gute Zustand (that is the good condition);
- Das ist in gutem Zustand (that is in good condition);