crossword chemistry edition

2. A substance in which the atoms of 2 or more elements are combined.
7. A substance in which all atoms have the same identity
8. Homogeneous mixture with particles so small that they cannot be seen with a microscope.
11. Particles in an atom with a positive charge.
13. The point in temperature when the liquid starts to boil.
15. A change of one substance to another.
17. Explanation of how particles in matter behave.
19. Horizontal rows of elements.
21. The basic unit of matter.
22. Consists of 2 atoms of the same element in a covalent compound.
23. the speed of something in a given direction.
24. The process of a solid going directly into a vapor.

1. force that holds atoms together in a compound.
3. The center of an atom.
4. Ability of a fluid to exert an upward force on an Force exerted per area hint-(Formula).
5. A type of matter with a fixed composition.
6. Has properties of both nonmetals and metals.
9. Particles in a atom with a negative charge.
10. A neutral molecule that forms as a result of electron sharing.
11. A change in size, shape, or state.
12. The energy required to change a substance from a solid to a liquid at its melting point.
14. A table filled with elements in order of atomic numbers.
16. A particle found in the nucleus of an atom.
18. Substances that are made.
20. Type of mixture with particles that are larger than those in solutions, but not heavy enough to settle out.