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air + mixture of gases around the earth that we breathe ☊
ice + frozen gas or liquid, esp. water ☊
star + A bright planet of gas in the night sky ☊
solid + Firm or hard ; not a gas or liquid ☊
tank + container for holding liquid or gas ☊
filter + device that removes unwanted substances from a liquid or gas ☊
liquid + basic state of things that is similar to water; not solid or gas ☊
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