made of and made from

meskipun sama sama berarti "terbuat dari" made of dan made from memiliki perbedaan.

Made of is used when the material the subject consists of doesn't change during the process of making the subject. 

Chairs are made of wood.

Here, wood is still wood. It doesn't transform into something else.

On the other hand, made from is used when the material changed its nature. Again, another Armen example:

Paper is made from wood.

Now, wood disappeared — it was transformed into paper.

Some more examples:

• The house is made of bricks. [They are still bricks.]
• Wine is made from grapes. [Grapes turn into wine.]

secara mudahnya made of digunakan jika materi asalnya masih terlihat
made from digunakan jika materi asalnya telah berubah 

untuk melihat sumbernya klik disini