Assertion: gunpowder's oxidizer | /r/HasProperty | typically potassium nitrate
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Source sentences:
text: In general, rocket candy propellants are an oxidizer (typically potassium nitrate) and a sugar fuel (typically dextrose, sorbitol, or sucrose) that are cast into shape by gently melting the propellant constituents together and pouring or packing the amorphous colloid into a mold.