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  • 08-09-2017
  • Chemistry
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In the classroom during a visual inspection of a rock, a student recorded four statements about the rock. Which statement about the rock is an observation?

1)The rock formed deep in the Earth's interior
2)The rock cooled rapidly
3)The rock dates from the Precambrian Era
4)The rock is black and shiny

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  • 08-09-2017
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