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Physical and Chemical Changes: Mastery Test
Aluminum is white in color.
Aluminum can be shaped into any form.
The density of aluminum is 2.700 kg/m3
Physical Property
Chemical Property
Aluminum burns in oxygen to form a
new substance.
Aluminum reacts with acids to give off
hydrogen gas.
020 Edmentum. All rights reserved.

Paleontologists have found plant fossils deep within the layers of the north polar region. these leaf fossils have been labeled as to the rock layers they were found in, with the lower numbers being layers close to the earth's surface and higher numbers representing deeper layers. according to the numbers of these four leaf fossils, what might you infer?