Magnesium is a chemical element.
Immediately after it caught fire, the chemical factory blew up.
Our company is planning to build a new chemical plant in Russia.
The chemical formula for water is H₂O.
Chemical companies are waiting until everything dies down before reinvesting.
The chemical symbol H expresses hydrogen.
It is only recently that crude oil has come to be used to make chemical products.
Chemical products account for approximately two-thirds of our exports.
As a result of some factories using fossil fuels, chemical emissions have already caused serious environmental problems.
Professor Morita presided at a meeting of the Chemical Society.
The scientist found that rats treated with the chemical lost on average 30% of their weight.
You'd better be careful with this liquid - I wouldn't trust a chemical substance. It can eat away your skin.
They work to prevent harm not only to workers but also to property, the environment, and the public by inspecting workplaces for chemical, radiological, and biological hazards
Some of the chemicals used to kill insects on farms can be bad for our health.
You must wear gloves when handling any of these chemicals.
I hate chemistry.
We're studying chemistry. Our lessons aren't difficult.
I was nearly ten when my parents gave me a chemistry set for Christmas.
Chemistry gave us plastics.
What a pain! It's almost 7p.m. and I still haven't finished the chemistry for tomorrow.
I think chemistry is more interesting than economics.
Yoko would not have taken chemistry unless she had needed it.
I'm sure his chemistry teacher would have failed him had they survived the tragic explosion.
I would like to consider the implications we can draw from the application of Emmet's theory to chemistry.
Chemistry has made notable progress in recent years.
In college, I fared ill with physics and well with chemistry.
According to the stars, she and I aren't supposed to have much chemistry between us.
Later, in high school, I would take chemistry the way I took vitamin pills.
I'm teaching two courses, year one's "Self-expression for University Students" and year two's "Food Chemistry".
Last chemistry lesson we observed how the substances change when they combine