Biology, 29.10.2020 20:20 saintsfan2004
Limestone is a common form of calcium carbonate. When limestone is subjected to high heat, it becomes calcium oxide and releases carbon dioxide gas. This change in limestone, at a given temperature, is an example of:
A. a physical change like the melting of ice
B. a chemical change like the rusting of iron
C. an igneous change like the melting of rock in a volcano
D. a reversible change such as hardening melted butter
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