Vietnam War's Deadly Chemicals

How Everything Works on Instagram: "Gold is a pure chemical element — and when it reaches nearly 100% purity (24 karat), it becomes surprisingly soft. Unlike many hardened metals, pure gold can be scratched or even gently cut with a knife. This softness isn’t a flaw — it’s actually a sign of purity. Because of this, most jewelry isn’t made from pure gold. Instead, it’s mixed with other metals to make it stronger and more durable for everyday wear. In its rarest form, gold shows its true characte