What’s the Matter?!?

1. What’s the Matter?!? (Describing Matter Unit)

2. What does our standard say? Students will examine the scientific view of the nature of matter. We will start with elements: c) Describe the movement of particles in solids, liquids, gases, and plasmas states d) Distinguish between physical and chemical properties of matter as physical or chemical.

3. Is It Matter? Which of these are matter and which are not? rocks salt baby powder Mars milk Jupiter air steam light dust heat love cells water sound waves atoms oxygen gravity electricity smoke magnetic force

4. Write a rule. What rule did you use to decide if something is matter or not?

5. What is matter? Unlike energy, matter is… • anything that has mass • and takes up space (has volume.)

6. Matter can exist in 4 different states: • Solid • Liquid • Gas • Plasma

7. Let’s Investigate!!! You’ll need to do some investigation of matter and draw some of your own conclusions. You’ll be using some solids, liquids, and gas.

8. For now… you don’t need to investigate the state of matter called “plasma.” Even though most of the matter in the universe is made up of plasma, we will come back to it later.

9. You will be given a collection of matter: • List each of the objects in your composition book. • Next to it, with your partner, describe it in as many ways as you can. • In a few minutes we will compare our notes as a class. • After we have shared, copy the table on the next slide and fill out the yellow part. We will compare answers.

10. Make a chart to record what you find out. (For now, you will only work on the yellow columns.)

11. Did you figure them out correctly?

12. Let’s find out about the distance between the particles in a solid, a liquid, and a gas. • In groups we will draw pictures to show how far apart we think the particles are in a solid, liquid or gas. • We will do “How Close are the Particles” POE • What if the syringe was filled with solid concrete. How far down would the plunger go? • Go back to the chart and fill it in.

13. Did you figure them out correctly?

14. What is the motion of the particles like? • “Time for Tea” lab. • Let’s see a simulation on a great website, www.pHet.colorado.edu

15. Did you figure them out correctly?

16. How can we cartoon to show the distance between the particles and the motion of the particles in a solid, a liquid, and a gas?

17. Let’s play a game called… Science Sez

18. Attraction between particles • Depends mostly on their distance apart. The farther apart, the less attraction. • So…. Which 2 states of matter have particles that are strongly attracted to each other. Which one are they not as attracted to each other?

19. Did you figure them out correctly?

20. A Phase Change Diagram:You’ll need to draw this in your composition book. See page 80.)

21. Between what phases do these happen? Condensation Evaporation Vaporization Melting point/Freezing point Boiling point Sublimation Is heat energy being added or removed with each process?

22. Do all substances melt or boil at the same temperature?

23. Earth’s temperature ranges from -88 to 58oC. What state of matter would each substance be in? • Saturn has a surface temperature of -176oC. What about substances there? • Neptune’s surface is -218oC. What about substances there?

24. PLASMA Plasma is a very hot gas that is made of electrically charged particles. A plasma conducts electrical currents. There is plasma in stars, lightning, and fluorescent lights. The universe is about 99% plasma!! It was discovered in 1879.

25. Did you figure them out correctly?