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copper - is a chemical element with the symbol Cu (from Latin: cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color.

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Penny(Copper),  Egg(Zinc)

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Karen Ocampo
Iron, Cobalt, Nickel, Copper, Zinc.

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Copper, Cu
- is malleable, ductile, and it is resistant to corrosion pure metal.

good electrical conductivity.

good thermal conductivity.

pure copper has a pinkish-orange color.

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lanthanum is a soft, malleable, ductile, silver-white metal. Lanthanum is naturally found in sediments.: it oxidizes rapidly in air and it reacts with water to form the hydroxide

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Copper-It is malleable, ductile, and an extremely good conductor of both heat and electricity. It is softer than zinc and can be polished to a bright finish. It is found in group Ib of the periodic table, together with silver and gold. Copper has low chemical reactivity.

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Hafnium: Hafnium is a bright, silvery-gray metal that is very ductile. Ductile means capable of being drawn into thin wires. . Its density is 13.1 grams per cubic centimeter. It is used in lightbulb filaments.

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Iron is a chemical element with symbols Fe and atomic number 26. Classified as a transition metal, Iron is a solid at room temperature. Iron have slow reaction to both water and oxygen and it has a density of 7.87.