General

Chipping a car

Q: Is "chipping" a car (i.e paying a company to change the software on a car, to make the car faster) permissible? Or would this fall under wastage of money?

Ringtones

Q: The ringtones available on my mobile phone contain music, so I am searching for an alternative which is not classed as music. I found this ringtone which simulates the sound of a classical telephone: http://www.zedge.net/ringtone/425057/old-school-ringtone/

Can you please listen to the ringtone on the link I provided and inform me if it is permissable? Does it matter that it is not a recording of a real telephone, but rather a computer simulation?

Doing experiments on food items

Q: Is it permissible to carry out experiments which involve food or food ingredients being used up, wasted, for educational purposes? Such experiments are sometimes done in schools. For example, leaving a tooth in a glass of fizzy drink (which will make the fizzy drink go to waste) or mixing sugar and sulphuric acid to produce a reaction (which makes the sugar go to waste).