Try the Mythbusters web site with The Learning Channel. (Works great! Very entertaining at a picnic!)
About half the pack is a good amount
Put the mentos in the Diet Pepsi and shake it up really good then quickly take the cap of and back up.
The experiment with Coca Cola and Mentos is a good illustration of chemistry in action. More specifically, Diet Coke is used. It is the carbon dioxide in the Diet Coke and the little dimples found on the Mentos candy pieces that create quite a spectacular reaction.
Wild pops it sounds stupid but its good 4 science fairs
Good Housekeeping has compiled a list of websites about dieting. Here is that list to assist you in finding the most appropriate diet for you: http://www.goodhousekeeping.com/health/diet/best-diet-websites.
Mentos and Diet Coke. Just search for it. http://en.wikipedia.org/wiki/Diet_Coke_and_Mentos_eruption
The Supermarket Diet was created by Good Housekeeping and can be found on their web page at http://www.goodhousekeeping.com/health/diet/good-housekeeping-supermarket-diet
2 Mentos should be good for an experiment
There are multiple websites that can help you find a diet for someone with depression. Some of these websites are: www.mayoclinic.com, www.diet.com, and www.myalli.com. All three sites offer great diet ideas for people with depression.
The "Get Ready" diet seeks to increase your metabolism to shed weight faster. A good overview of this diet can be found at http://www.everydiet.org/diet/get-ready-diet
A good start on a low-carb diet is to go for more fruit and vegetables in your diet. good specific sources from information on cutting carbs can be found at the lowcarbcentral or livestrong websites.
You can learn about a low fiber diet on number of different medical websites. Some good websites to refer to are American Cancer Society, MayoClinic, and WebMD.