1. Structure of Matter Classifying and Applying Particle Theory

2. Characteristics of Solids, Liquids and Gases SolidsLiquidsGases Particles have slight vibration movement Particles move around each other in all directions Particles move very fast in all directions. Particles are tightly packed and stay in same position. (definite volume and shape) Particles are still close together but change position relative to each other. (definite volume; takes the shape of container) Particles are very far apart. (volume and shape change with container) Strong forces of attraction between particles. Medium strength forces between particles. Very weak forces of attraction between particles

3. Plasma very hot gas made up of charged particles (both positive and negative) … that is what the word “ionized” means. influenced by electric and magnetic fields.

4. This state of matter expands when heated and contracts when cooled. A.Solids B.Liquids C.Gases D.All three

5. Particles are moving the fastest in this state of matter. A.Solids B.Liquids C.Gases D.All three

6. Particles have the most energy in this state of matter. A.Solids B.Liquids C.Gases D.All three

7. Particles take the shape of their container but keep a constant volume. A.Solids B.Liquids C.Gases D.All three

8. Particles maintain a constant shape and volume. A.Solids B.Liquids C.Gases D.All three

9. Particles are always moving. A.Solids B.Liquids C.Gases D.All three

10. What are these particles?

11. Still creating particles … atoms. New Element 115 Takes a Seat at the Periodic Table Scientists create a very heavy atom with a very short life span By Jeffrey Kluger Aug. 28, 20130Jeffrey Kluger0

12. Atoms combine to form molecules.

13. Mixtures In grade 7 we simply refer to atoms and molecules as particles. If we have a container will all one type of particle we call it a pure substance. If we have a container that has two or more different particles in it we have a mixture.

16. Classify the following as pure substance “A” or mixture “B.” tap water salt water the air we breathe a tank of helium gas distilled water a pizza aluminum foil table sugar

17. Types of Mixtures Homogeneous mixtures otherwise called “solutions” look the same througout; you see one thing more than one type of particle but mixed uniformly seawater, steel, tea

18. Types of Mixtures Heterogeneous mixtures otherwise called “mechanical mixtures” you see more than one thing more than one type of visible particle pizza, soil, salt and pepper

19. Classify the following as solutions “A” or mechanical mixtures “B.” fruit salad apple juice pizza dough before cooking tap water the air we breathe greek salad

20. A closer look at solutions. Solvent Solute to dissolve

21. Identify the solute in each of the following solutions. A salt water solution is used to disinfect an infected toe. Windshield washer is a solution of alcohol in water. Nail polish will dissolve in nail polish remover thus cleaning your nails. Instant coffee is made by dissolving crystals in boiling water.

22. Identify the solvent in each of the following solutions. A solution of little bleach in water will make the laundry whiter. Brass is a solution of molten zinc or tin dissolved in molten copper and then allowed to harden. Kool-aide crystals dissolved into water make a tasty drink. Air is made up of mostly nitrogen with some oxygen and other gases mixed throughout.

23. What factors affect the rate at which a solute will dissolve in a solvent? Temperature of solvent Amount of solvent Type of solvent Crystal size of solute if it is a solid Pressure applied to system Whether the mixture is stirred or not.