I think T'ai-tsu is the person who made Changan his dynasty's capital
Answer:
Both are only physical changes.
Explanation:
The green stuff is cupric chloride, a byproduct of corrosion of the valve body or possible copper leachate in the water. Either way, it's typical of water leakage where the water is of low pH. Boiling sugar to make caramel is the same as eating sugar, just in a different form.
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<span>chris bought a bagel with coins issued by the government is FIAT MONEY.
</span>karen bought a bike by exchanging it for her silver receipt is REPRESENATIVE MONEY. <span>luke paid six apples for two dozen eggs is COMMODITY MONEY.</span>