Copper substance cannot be decomposed by a chemical change.
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- When heated, the copper to carbonate breaks down into copper to oxide. The copper carbonate, which is dark in colour, releases carbon dioxide as well.Because they are the simplest chemically, elements cannot be broken down by chemical processes.
- Elements are those pure compounds that cannot be broken down by reactions, heating, electrolysis, or other common chemical processes. Examples of elements are oxygen, gold, and silver. Its makeup stays the same, though. One instance of a physical change is melting. A physical change is when a sample of matter experiences a change in some of its qualities but not in its identity. Water turns into water vapour when it is heated.
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Oil is less dense than water, so the difference would be its density. Water is a good solvent, which means It can dissolve other substances.
pressure......................................
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As electric current flows through a wire, it generates a magnetic field in the area surrounding the wire.
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Sun and the stars, nothing humans don't use fusion at all
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