Chemistry › Section R · Metals, metalloids, and nonmetals › Topic R.4
Hydrogen and carbonates
Hydrogen is the simplest element and the most abundant in the universe, and industry makes tens of millions of tonnes of it a year. Carbonates are just as familiar: limestone, chalk, seashells, baking soda and antacids, and the chemistry that is slowly changing the oceans.
In this topic
- Hydrogen: an element of its own
- Making hydrogen in industry
- Making hydrogen in the laboratory
- Hydrogen's compounds and reactions
- Worked example: the carbon cost of hydrogen
- Carbonates and hydrogen carbonates
- Acids and heat release carbon dioxide
- Caves and the oceans
- Sodium carbonate and the Solvay process
- Worked example: how much acid does an antacid neutralise?
- Common mistakes to avoid
- Key takeaways
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