Which beach is recommended in Koh Chang?
I will visit Koh Chang in mid November and am wondering where should I book a hotel, on Kai Bae Beach or White Sand? I like quiet and peaceful beach (no jet ski or noisy boats) with facilities like Pattaya (beach parasols and chair, food vendors). Can you recommend? Any travel tips about their beach? Thanks.

White Sand Beach (Had Sai Khao) is the most developed (crowded) beach, with resorts building swimming pools right down to the high water mark.
That is not the place to go for peace and quiet.

Kai Bae has gone totally commercial over recent years and the beach was always quite rocky.

Instead, try Siam Beach south of Kai Bae or Had Klong Phrao just north of Kai Bae.

Whichh item would take the least energy to increase its temperature? Black sand. Lounge chair, beach water.?

definetly not water. I understand why someone chose black sand but the right answer is lounge chair.

What is the mesh like material called over most beach lounge chairs called? Where can i buy it in bulk?
It is the plastic mesh, see through material. Looking for trade name.

Try searching Lawn chair webbing. Look at the links bellow for some suppliers.

If A Tourist Sits Too Close For Comfort To Your Beach Chair,?
Do You Start Feeding The Sea Gulls
Between Ya To Make Them Go Away?

I may or may not call immigration.

Where can I find those new beach pod chairs?
I want to see movies in the park and be comfortable, but not block anyone. These chairs don't have legs but they do support your back.

Do you mean chairs like these?
Around where I live they are used as stadium seats, or seats when sitting in a canoe. At the stadium or in a canoe there is no back support so these seats help a lot!

these seats can be found at other places too! (like sheels, and other sporting good stores)