# data[].attributes.headline
Rocks containing carbonates can be identified because they fizz when hydrochloric acid is applied

# data[].attributes.subject
Rocks containing carbonates can be identified because they fizz when hydrochloric acid is applied

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A piece of charcoal, which is mostly the substance carbon, glows red, gives off heat, and becomes gray ash

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A piece of charcoal, which is mostly the substance carbon, glows red, gives off heat, and becomes gray ash

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A sheet of copper can be pounded into a bowl

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A sheet of copper can be pounded into a bowl

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A bar of lead is more easily bent than a bar of aluminum of the same size

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A bar of lead is more easily bent than a bar of aluminum of the same size

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Acid in tomato sauce can corrode aluminum foil

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Acid in tomato sauce can corrode aluminum foil

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Helium does not react with any other element

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Helium does not react with any other element

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The boiling point of water is 100 degrees celsius

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The boiling point of water is 100 degrees celsius

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The silver spoons tarnished and turned black

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The silver spoons tarnished and turned black

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Alka-Seltzer tablets react wit water to produce gas

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Alka-Seltzer tablets react wit water to produce gas

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Sodium reacts very easily with other elements

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Sodium reacts very easily with other elements

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The density of water is 1.0 grams per cubic centimeter

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The density of water is 1.0 grams per cubic centimeter

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Copper turns green when exposed to the environment

# data[].attributes.subject
Copper turns green when exposed to the environment