Particles and Separating Techniques

Across

2. The spreading out of particles from an area of higher concentration to an area of lower concentration.
7. The change of state from liquid to gas. It occurs at the surface of the liquid and can happen below the boiling point. It can be used as a method to separate a mixture.
8. A change of state from solid to gas.
10. The state of matter in which a substance can flow and take the shape of a container. It has a fixed volume and cannot be compressed. The particles can move around each other. Shown as (l) in chemical equations.
11. The substance that dissolves in a solvent to make a solution. In salt water, this substance is the salt.
12. A measurement of how closely packed the particles are in a substance.
13. The classification of a substance as solid, liquid or gas.
14. The state of matter in which a substance can flow and completely fill a container. It has no fixed shape or volume and can be compressed. The particles are far apart and move quickly in all directions. Shown as (g) in chemical equations.
15. A technique used to separate substances based on their solubility in a particular solvent.
16. The model that shows the arrangement and movement of particles in solids, liquids and gases.
17. The change of state from gas to liquid.
18. A mixture of two or more substances in a liquid, formed when a solute dissolves in a solvent. Salt water is an example.
21. The ability of a solute to dissolve in a solvent.
24. A technique to separate and collect a solvent from a solution.
27. When the maximum amount of solute has dissolved in a solvent.
28. A technique used to separate substances that are insoluble from those that are soluble in the solvent.

Down

1. When a soluble solid becomes mixed into a liquid to form a solution.
3. The change of state from liquid to solid.
4. The random movement of small particles suspended in a fluid.
5. The change of state from solid to liquid.
6. When something is squeezed or pressed together.
9. Techniques to separate out substances from a mixture.
15. A physical change from one state of matter to another.
19. The substance that passes through the filter paper during filtration.
20. The change of state from a liquid to a gas. It occurs throughout the liquid when it reaches the boiling point temperature.
22. The liquid in which a solute dissolves. In salt water, this liquid is the water.
23. The amount of space that a substance or object occupies.
25. The substance that remains in the filter paper during filtration.
26. The state of matter in which a substance has a fixed shape and cannot flow or be compressed. The particles are close together in a regular arrangement. Shown as (s) in chemical equations.