Question: A man was traveling during Ramadaan. He intended to break Sawm (Fast), but he did not eat and only chewed gum until noon. Then, he intended to complete his Sawm and broke his Sawm at sunset. What is the ruling on the Sawm of that day? Has he to make up for this day?
Answer: If he intended to break Sawm or chewed gum, his Sawm was broken. Consequently, he has to make up for that day... read more here.