What is a pure substance in chemistry? Learn about pure and impure substances in this KS3 chemistry guide from BBC Bitesize.

Gasoline is an impure substance refined from a very impure base stock – crude oil. It’s an explosive hydrocarbon cocktail containing all kinds of different chemicals.

Novo Nordisk said on Thursday it sued one compounding pharmacy and refiled a lawsuit against another after finding their products claiming to contain the active ingredient for its in-demand weight ...

A plant substance touted as a natural painkiller, “energy booster” and even a treatment for opioid withdrawal could once again become legal in Indiana under a bill advancing through the state ...

In the lawsuits filed in Florida on Wednesday, Novo Nordisk highlighted findings of impure substances in products from Wells Pharmacy and Brooksville Pharmaceuticals, both based in Florida.

If it is an uneatable animal, its dung is transformed into smoke and ash when it is used as fuel. According to the sounder of the scholars' two relevant opinions, when the impure substance is ...

Novo Nordisk—manufacturer of diabetes and weight-loss drugs Ozempic and Wegovy—filed lawsuits against two pharmacies after tests concluded their products were impure, according to an ...

However, for those who have dyed their hair with impure substances, the validity of their prayer is preserved if they wash the dye thoroughly until the rinse water runs clear. Renowned scholar ...

Gasoline is an impure substance refined from a very impure base stock – crude oil. It’s an explosive hydrocarbon cocktail containing all kinds of different chemicals.