Matter

4. Solids that consist of positive metal ions surrounded by a sea of electrons.
5. This phase change releases heat energy meaning it is a warming process.
8. The process by which a solid changes directly to a gas.
14. ______ network solids are formed by substances that form multiple covalent bonds between like atoms/molecules.
15. Instruments that measure air pressure.
19. Substances that contain 2 or more different elements.
20. Occurs when a gas escapes through an opening.
24. Separates homogeneous mixtures by boiling off part of the solution into vapor which is in turn condensed and collected.
25. A combination of two or more substances that retain their properties.
27. Phase of matter that has neither definite shape nor definite volume.
29. Properties are characteristics that describe how the substance reacts with or changes into other substances.
30. Properties of matter are characteristics that can be observed without chemical changes.
31. Weak forces that result from temporary shifts in the density of electrons.
33. The movement of one material through another.
34. Water gets drawn upward through narrow spaces (2 words).
35. A dissolved substance.
37. A homogeneous mixture where one substance is dissolved in another.
38. Solids that are single elements held together.
40. The measure of resistance to flow.
41. Phase of matter that has definite volume but not definite shape.

1. The measure of the inward pull by particles on the interior of a body of liquid (2 words)
2. Type of dipole-dipole force between molecules that contain hydrogen (2 words).
3. Forces between polar molecules (2words).
4. Any substance that has mass and occupies space.
6. Compounds that lower surface tension
7. Solids that are held together by intermolecular forces.
9. Solids do not contain crystals.
10. The temperature at which all 3 phases can coexist (2 words).
11. A mixture is a mixture that has a constant composition throughout.
12. A process of moving a solution across a surface to be separated.
13. A mixture is a mixture that does not blend evenly throughout.
16. A pure substance that cannot be chemically changed or separated into other substances.
17. Phase of matter that has a definite shape and definite volume.
18. What a substance is dissolved into.
21. Separates heterogeneous mixtures using some sort of filter.
22. Separates homogeneous mixtures by causing a dissolved substance to form solid crystals.
23. The force attracting identical molecules.
26. The force attracting different molecules.
28. The ability for gases and liquids to flow.
32. This phase change requires energy to occur, meaning it is a cooling process.
36. The process of a gas changing directly to a solid.
39. Solids that are strong but brittle resulting in high melting points.