2 articles
Environmental & Earth Chemistry
Air, water, soil, climate, pollution, minerals and the chemistry of our planet.
What Are Heavy Metals? Meaning, Examples and Why the Term Is Confusing
What 'heavy metals' means in chemistry, toxicology and the news, the elements usually included (lead, mercury, cadmium, arsenic), how they affect health, and why chemists find the term unhelpful.
The Most Abundant Elements in Earth's Crust
Oxygen and silicon make up nearly three-quarters of the Earth's crust. Here are the eight elements that make up over 98% of it, why the crust differs from the whole Earth, and what the numbers mean.