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Chemical in sentence

890 examples of Chemical in a sentence

One is the reward system, and that's fed by the chemical dopamine.
And therefore, as with all biology, you get selection through screening, whether you're screening for hydrogen production, or chemical production, or just viability.
It doesn't do it with a chemical.
So Grace and her friend are on a tour of a chemical factory, and they take a break for coffee.
Which is used actually to identify chemical elements in a cool matter, which is absorbing exactly at those frequencies.
And we can also study chemical composition and physical parameters of stars, galaxies, nebulae.
In the core, we have thermonuclear reactions going on, creating chemical elements.
Sometimes we have to deal with just one tiny, weak spectral line to measure the composition of that chemical element in the atmosphere.
My colleagues, comparing composition of chemical elements in different galactic stars, actually discovered alien stars in our galaxy.
It's amazing that you can go so far simply studying the chemical composition of stars.
Now to go ahead with this, we really need to understand chemical evolution of the universe.
But it's to show you how complicated is the whole story of the production of chemical elements.
And doing this for 14 billion years, we end up with this picture, which is a very important graph, showing relative abundances of chemical elements in sun-like stars and in the interstellar medium.
You can actually go and detect and study a chemical composition of planets far, far, far from solar system.
If you see, in the spectrum of a planet host star, if you see strange chemical elements, it can be a signal from a civilization which is there and they want to signal about it.
And a synapse is a chemical location where they communicate with each other.
Living systems are in constant conversation with the natural world, through sets of chemical reactions called metabolism.
And it's got a chemical battery in it.
It can follow chemical gradients.
Now, this looks like a chemical kind of birth.
And there are little chemical scissors, called restriction enzymes which cut DNA whenever they see particular patterns.
They can only be taken orally if taken in conjunction with some other chemical that denatures the MAO.
A chemical process produces calcite, which is a kind of natural cement that binds the grains together.
A huge chemical depot caught fire, thousands of drums filled with petrochemicals were blazing away and exploding all around us.
There is a chemical that's called perflubron.
So, I got my hands on that chemical, filled the sink up with it, and stuck my face in the sink and tried to breathe that in, which was really impossible.
It's a river that carries with it all the things that rivers tend to carry these days: chemical contaminants, pesticide runoff.
Yet, it was used as a chemical warfare agent in World War I. It's an extraordinarily toxic thing.
It was as if he was in the grip of some invisible pharmaceutical, a chemical reaction, for which my playing the music was its catalyst.
The active ingredient was dioxin, an extremely toxic chemical that was sprayed in vast quantities, and whose effects passed through the genes to the next generation.
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