They either combine to make a chemical compound or stand alone as they are.
Life has been trying to do this since the first protozoa appeared in the primordeal oceans: heck since the first self-replicating chemical compound turned up.
Yes that's right, the base metal element lead, Pb, or more exactly the lead-based chemical compound Pb(CH2CH3)4 added to petrol to make car engines run more smoothly.
To try to extend the lives of a pill, a company may patent it multiple times, protecting not only a chemical compound but also manufacturing methods or uses for the drug.
By combining an artist and scientific quest, the two professors at Michigan State University found that a certain type of metal-loving bacteria can transform high amounts of the toxic chemical compound gold chloride from a liquid into solid 24-karat gold.
FORBES: FOCUS: 'Microbial Alchemy' Produces Gold From Toxic Chemical
Researchers surf this molecular ocean using ultrafast chemical screeners that can test a compound on millions of cells per day.
The company said at the time that 10 litres of chemical bitumen had split at its southern compound.
"We're now able to get an idea, at a very early stage, which compound will be a good chemical series rather than find out five years later that it is toxic, " says Hargreaves.
"We're now able to get an idea, at a very early stage, whether a compound will be a good chemical series rather than find out five years later that it is toxic, " says Andrew Hargreaves , an AstraZeneca scientist.
The new compound works by a hitherto unknown pathway of chemical reactions in the brain cells, particularly those in those parts of the brain which are related to appetite.
Another common test, which can be purchased online, is to give people a particularly bitter chemical such as PROP or PTC, which are similar to a compound found in many dark-green vegetables.
Part of a UN compound burned down after it was hit by chunks of the burning chemical which ignites on contact with air.
One compound synthesised by Dr Blackwell's team is more effective than the natural signalling chemical at turning on this group behaviour and works even when there are not enough bacteria around to induce the process naturally.
The element to be purified is first incorporated into a chemical that can be turned into a gas. (In this case, the exact compound is still proprietary information.) Then an infra-red laser is shone through the gas.
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