2. NOTES #3 PROPERTIES AND PHASES OF MATTER

3. 1. WHAT IS MATTER? Matter is anything that : Has mass Has volume (takes up space) LIST 5 things that are MATTER LIST 5 THINGS THAT ARE NOT MATTER

4. HOW CAN MATTER BE IDENTIFIED? Matter can be identified by: Physical properties- what you can observe without changing the matter color, texture, density, melting point, conductivity, odor Chemical properties- how matter interacts with other matter and changes into something new reactivity,

5. WHAT ARE SOME PHYSICAL PROPERTIES? Density color odor phase Physical properties can be observed without changing what the substance is

6. WHAT ARE SOME CHEMICAL PROPERTIES? flammability reactivity

7. WHAT ARE THE STATES, OR PHASES, OF MATTER? 1. solid 2. liquid 3. gas 4. plasma?

8. 1.WHAT ARE SOME PROPERTIES OF SOLIDS  definite shape, definite volume  Particles move slowly and are strongly attracted to each other  Particles can only vibrate in place

9. ADD SOLIDS VIDEO

10. 2. WHAT ARE SOME PROPERTIES OF LIQUIDS? definite volume but no definite shape, takes the shape of its container Particles move faster and are weakly attracted to each other. Particles are able to slide past one another (flow)

11. SPECIAL PROPERTIES OF LIQUIDS: Viscosity- resistance to flowing, Thick liquids (like honey) have a high viscosity and do not flow easily

12. INSERT CORNSTARCH VIDEO

13. SPECIAL PROPERTIES OF LIQUIDS surface tension- causes liquids to “bead” up

14. ADD LIQUIDS VIDEO

15. 3: WHAT ARE SOME PROPERTIES OF GASES?  no definite shape and no definite volume- expand to fill container  Particles move very fast and are very weakly attracted to each other  Gases are free flowing

16. ADD GASES VIDEO

17. 4. WHAT THE HECK IS PLASMA?  Most common state of matter in the universe  Found in :stars (including our sun), jet engines, Lightning, nuclear reactor cores, Aurora (northern and southern lights)

18. PLASMA EXAMPLES Properties of Plasma: Very hot very low density Electrons have separated from their nucleus and orbit more randomly

19. ADD PLASMA VIDEO

20. PHASE CHANGE NOTES BEGIN HERE

21. WHAT ARE PHASE CHANGES? A change of phase or state is a physical change. No new substance is created. Caused by adding or removing energy Temperature- a measure of the average speed of the particles of a substance

22. WHAT HAPPENS WHEN A SUBSTANCE GAINS ENERGY? a. Speed of particles increases b. Temp. increases c. Vol. increases d. Substance may change to higher energy state

23. ADDING ENERGY PROCESS Solids liquids melting Liquids gases vaporization Solid gas sublimation

24. WHAT HAPPENS WHEN A SUBSTANCE LOSES ENERGY? a. Speed of particles decreases b.Temp. decreases c.Vol. decreases d.Substance may change to lower-energy phase

25. REMOVING ENERGY PROCESS gases liquids Condensation Liquids solids Freezing

26. PHASE CHANGE TEMP. OF SOME SUBSTANCES substanceMelting point (Celsius) Boiling point (celsius) water0100 ethanol-11779 propane-190-42 Table salt8011,465

27. A HANDY STUDY AID: C. Energy and matter never disappear, they simply change forms.

28. KILLER LAKE VIDEO GOES HERE