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The 5-Second Trick For trường nội trú tốt nhất tại tphcm

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A compound that only includes 1 type or class of atom is alleged to get an element. Since it can't be altered by Bodily or chemical means to stop working or make new substances, a component is often a pure materials. Many features are metals, nonmetals, or metalloids. Stick to https://brucew109zfj2.celticwiki.com/user

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