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The green powder is copper (2) carbonate. When heated it decomposes to give copper (2) oxide (which is black) and carbon dioxide . It is a compound.

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13y ago
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14y ago

It is the substance called Malachite (Cu2(OH)2CO3)

because Malachite is grean and after it burn it, it become black.

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12y ago

The green powder is called Copper (ii) Carbonate.

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9y ago

The green powder was heated in a test tube. Green powder is considered to be a compound. A gas was given off and it changed colors.

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13y ago

Compound. As elements cannot be broken down into simpler substances.

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Q: If a light green powder is heated in a test tube A gas is given off while the solid becomes black In which classification of matter does the green powder belong?
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