Across
- 4. The electrons in an atom's outermost shell
- 5. An atom or group of atoms with an electrical charge
- 8. A mixture with uniform distribution of particles
- 10. The central core of an atom containing protons and neutrons
- 11. The chart that organizes all known elements
- 12. Compounds that contain chains or rings of carbon
- 14. The material that does the dissolving in a solution
- 18. A subatomic particle with a positive electrical charge
- 19. A substance formed when two or more elements combine chemically
- 20. The study of matter and its properties
- 21. A substance that contains only one kind of atom
- 25. A subatomic particle with no electrical charge
- 27. A change that produces new substances with different properties
Down
- 1. A bond formed when atoms share electrons
- 2. A change in shape or state without changing chemical identity
- 3. A mixture with nonuniform distribution of particles
- 6. The number of protons in an atom's nucleus
- 7. A homogeneous mixture of one material dissolved in another
- 9. The force that holds two atoms together
- 13. The basic unit of any compound
- 15. Anything that occupies space and has mass
- 16. A bond formed when electrons are transferred between atoms
- 17. The space occupied by a pair of electrons in an atom
- 22. A subatomic particle with a negative electrical charge
- 23. A combination of symbols representing a compound
- 24. The smallest unit of any elemental substance
- 26. The material that is dissolved in a solution