Across
- 5. Horizontal rows of elements.
- 8. A change of one substance to another.
- 11. force that holds atoms together in a compound.
- 14. the center of an atom.
- 17. Particles in a atom with a negative charge.
- 19. The energy required to change a substance from a solid to a liquid at its melting point.
- 20. A neutral molecule that forms as a result of electron sharing.
- 22. Particles in an atom with a positive charge.
- 23. Has properties of both nonmetals and metals.
- 25. If all the atoms in a substance have the same identity it becomes...
Down
- 1. The process of a solid going directly into a vapor.
- 2. Substances that are made.
- 3. A table filled with elements in order of atomic numbers.
- 4. Type of mixture with particles that are larger than those in solutions, but not heavy enough to settle out.
- 6. the speed of something in a given direction.
- 7. Ability of a fluid to exert an upward force on an Force exerted per area hint-(Formula).
- 9. A change in size, shape, or state.
- 10. Homogeneous mixture with particles so small that they cannot be seen with a microscope.
- 12. Explanation of how particles in matter behave.
- 13. The point in temperature when the liquid starts to boil.
- 15. A substance in which the atoms of 2 or more elements are combined.
- 16. A type of matter with a fixed composition.
- 18. A particle found in the nucleus of an atom.
- 21. Consists of 2 atoms of the same element in a covalent compound.
- 24. A type of matter with a fixed composition.