An atom is the smallest unit of matter that defines the chemical elements. Every solid, liquid, gas, and plasma is made up of neutral or ionized atoms. Atoms are very small: the size of atoms is measured in picometers – trillionths (10−12) of a meter.Every atom is composed of a nucleus and one or mo...By: Ayush Naik
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from Instructables: exploring - technology - robots http://ift.tt/1HjTZSx
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