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John investigated the properties of two minerals and recorded his observations: Feldspar is a gray, dull, solid that has flat surfaces.
Calcite is a white, dull, solid that has flat surfaces.

What evidence could John use to conclude that both minerals are non-metallic? (2 points)
a
Both minerals are dull.

b
Both minerals are solids.

c
Both minerals have flat surfaces.

d
Feldspar is gray, while calcite is white.

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Answers: 2

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John investigated the properties of two minerals and recorded his observations: Feldspar is a gray,...

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