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1. An atom is made out of a sphere of positive
charges with negatively charged electron embedded
in it.
2. Subatomic particle with a neutral charge
3. A tangible model.
4. Matter is made of small indivisible atoms.
5. Most of the mass is concentrated in the center of
atom. This tiny, dense, positively charged core
called a nucleus.
6. Positively charged particles
ACE