what chewing gum that sticky?

Question

some chewing gums harden on addition of water, why?

Answer 1

Maybe because of the tempature change when the gum touches the water? When it is in your mouth it is pretty warm, and the water cools it down fast.

Answer 2

Chewing Gum
Are you sick and tired of stepping in waste chewing gum? Have you ever noticed gum litter on pavements in the High Street? When is the last time your child came home with gum in their hair or on their clothes?

Now help is at hand. The University of Manchester is working with Green Biologics, an Oxford based biotechnology company, to develop a revolutionary biological treatment that is cost effective, non-toxic and environmentally friendly.

Clean up is difficult, time consuming and costly. Currently about £150 million are spent annually by local authorities in the UK on chewing gum removal. Currently available products rely on abrasive chemicals, high-pressure washing and/or physical scraping. Most treatments are not particularly effective and can cause environmental damage.

However, this new treatment uses natural enzymes to break down the chemical structure of gum and Green Biologics been awarded a grant from the DTI to help develop a prototype in collaboration with researchers from the University of Manchester.

Dr Gill Stephens from the University's School of Chemical Engineering and Analytical Science said: 'The new treatment will make it much easier to clean up waste chewing gum. Enzymes are nature's own catalysts, and are, therefore, safe and environmentally friendly. They work at low temperatures and pressures, so the biological treatment is much less harsh and damaging than the existing clean up methods'

Dr Edward Green, Managing Director of Green Biologics commented 'This new funding will permit further development of this exciting product. We have teamed up with scientists specialising in biological methods for chemical degradation to tackle not only problems with gum but also other environmental nuisances such as graffiti. The public will bebenefit from our technology which will result in a cleaner built environment.'

Answer 3

It's more the coldness of the water than any actual changes to the gum

Answer 4

The stuff that you used to get in a pack of baseball cards was the worst.

Answer 5

why doesn't a cake recipe work when you mess up the amount of water added?
same idea =)

Answer 6

i know a pain