Answer:
Aluminum had more value than gold in the 1820s, because it was harder to obtain. Hope this helped :)
Option 1/A (It is the first one)
Nitrogen=2, Hydrogen=8, Carbon=1, Oxygen=3
Hydrogen=4, Carbon=2, Oxygen=2
Iron=1, Nitrogen=2, Oxygen=6
<u><em>Answer:</em></u>
- A pure substance that contains more than one atom is called a compound.
<u><em>Explanation:</em></u>
- Compounds are formed by combination of atoms by a fixed ratio. They have their own characteristic features.
- Pure substances are further broken down into elements and compounds. A compound can be destroyed by chemical means. It might be broken down into simpler compounds, into its elements or a combination of the two.
<u><em>Example </em></u>
- H2SO4 which is formed by combination of three different atoms like H, S and O.