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Across 2. Formation or the breaking of chemical bonds (2 Words) 5. The place where electrons reside (2 Words) 6. The positively charge sub-particle 8. The smallest particle that still act as the element 9. The measurement for matter 10. Molecules that does not have to be carbon-based 12. Molecules with no charge at all 15. The sub-particle with no charge 16. The process of ionic compound or polar molecules to separate once dissolved in water 17. The amount of gravitational force acting on an object 18. Anything that has mass or volume 19. The attraction between polar molecules (2 Words)

Down 1. Energy cannot be created or destroyed (5 Words) 2. Potential energy in chemical bonds (2 Words) 3. Sub-particle with a negative charge 4. The center of the atom 7. Carbon-based molecules that are made of or by organisms 11. Two or more atoms of different element types that have bonded together 13. Molecules with opposite slight charged ends 14. Energy in motion