what is matter ? what is solid carbon dioxide?
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Anything that occupies space and has mass is called matter.
Dry ice is the solid form of carbon dioxide.
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In classical physics and general chemistry, matter is any substance that has mass and takes up space by having volume.
Carbon dioxide is colorless. ... At 1 atmosphere (near mean sea level pressure), the gas deposits directly to a solid at temperatures below −78.5 °C (−109.3 °F; 194.7 K) and the solid sublimes directly to a gas above −78.5 °C. In its solid state, carbon dioxide is commonly called dry ice.
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