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ACROSS
4.Atomic model where electrons don't move around the nucleus in orbits.
8.Electrons reside in orbits. They move between each shell when gaining or losing energy.
9.Negatively charged particles
10.Building block of matter that cannot be broken apart using any chemical means
DOWN
1. An atom is made out of a sphere with negatively charged electron embedded in it.
2. Subatomic particle with a neutral charge
3. A tangible model
7.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 nucle
6.Positively charged particles
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