1. Matter

2. Matter occupies space and has mass Hill, J. and Petrucci, R. 1996. General Chemistry Instructor’s Edition.USA: Prentice-Hall, Inc.

3. Mass is different from weight mass is the measure of the quantity of matter in an object weight is the force that gravity exerts on an object Hill, J. and Petrucci, R. 1996. General Chemistry Instructor’s Edition.USA: Prentice-Hall, Inc. Chang, R. 2002. Chemistry 7 th ed. Singapore: McGraw-Hill. –astronaut’s mass = 50 kg –astronaut’s weight earth = 50 kg * 9.8 m/s 2

4. On the moon, astronauts feel weightless weight moon = 1/6 weight earth http://grin.hq.nasa.gov/IMAGES/SMALL/GPN-2002-000146.jpg

5. Classification of matter

6. There are different ways to classify matter based on physical state (solid, liquid, gas) based on composition (substance, mixture) Hill, J. and Petrucci, R. 1996. General Chemistry Instructor’s Edition.USA: Prentice-Hall, Inc. Chang, R. 2002. Chemistry 7 th ed. Singapore: McGraw-Hill.

7. Classification of matter based on physical state (solid, liquid, gas)

8. Properties of a solid retains its own shape and volume virtually incompressible does not flow Brown,, E. LeMay, and B. Bursten. 2000. Chemistry: The Central Science. Phils: Pearson Education Asia Pte. Ltd. Chang, R. 2002. Chemistry 7 th ed. Singapore: McGraw-Hill. ?

9. Properties of a liquid assumes the shape of the container does not expand to fill container virtually incompressible flows readily Brown,, E. LeMay, and B. Bursten. 2000. Chemistry: The Central Science. Phils: Pearson Education Asia Pte. Ltd. Chang, R. 2002. Chemistry 7 th ed. Singapore: McGraw-Hill.

10. Properties of a gas assumes both the volume and shape of the container compressible flows readily Brown,, E. LeMay, and B. Bursten. 2000. Chemistry: The Central Science. Phils: Pearson Education Asia Pte. Ltd. Chang, R. 2002. Chemistry 7 th ed. Singapore: McGraw-Hill.

11. Matter can change from one physical state to another Chang, R. 2002. Chemistry 7 th ed. Singapore: McGraw-Hill.

12. * Energy is the capacity to do work or to produce change. It may take different forms, and heat is one of them. Chang, R. 2002. Chemistry 7 th ed. Singapore: McGraw-Hill.

13. Classification of matter based on composition (substance, mixture) Hill, J. and Petrucci, R. 1996. General Chemistry Instructor’s Edition.USA: Prentice-Hall, Inc.

14. A substance has definite or fixed composition which does not vary from one sample to another Hill, J. and Petrucci, R. 1996. General Chemistry Instructor’s Edition.USA: Prentice-Hall, Inc. goldwater

15. Substances are further classified into two: elements and compounds Hill, J. and Petrucci, R. 1996. General Chemistry Instructor’s Edition.USA: Prentice-Hall, Inc.

16. Elements are composed entirely of one type of atom Brown,, E. LeMay, and B. Bursten. 2000. Chemistry: The Central Science. Phils: Pearson Education Asia Pte. Ltd. Hill, J. and Petrucci, R. 1996. General Chemistry Instructor’s Edition.USA: Prentice-Hall, Inc.

17. Compounds are made up of two or more different kinds of atoms that are combined in fixed ratios Brown,, E. LeMay, and B. Bursten. 2000. Chemistry: The Central Science. Phils: Pearson Education Asia Pte. Ltd. Hill, J. and Petrucci, R. 1996. General Chemistry Instructor’s Edition.USA: Prentice-Hall, Inc.

18. Note: There is a difference between a compound and a molecule compound –made up of two or more different kinds of atoms joined together Brown,, E. LeMay, and B. Bursten. 2000. Chemistry: The Central Science. Phils: Pearson Education Asia Pte. Ltd. Chang, R. 2002. Chemistry 7 th ed. Singapore: McGraw-Hill.

19. Note: There is a difference between a compound and a molecule molecule –made up of two or more atoms joined together –the atoms may be the same or different Brown,, E. LeMay, and B. Bursten. 2000. Chemistry: The Central Science. Phils: Pearson Education Asia Pte. Ltd. Chang, R. 2002. Chemistry 7 th ed. Singapore: McGraw-Hill.

20. Hill, J. and Petrucci, R. 1996. General Chemistry Instructor’s Edition.USA: Prentice-Hall, Inc.

21. A mixture has a composition that may vary from one sample to another Hill, J. and Petrucci, R. 1996. General Chemistry Instructor’s Edition.USA: Prentice-Hall, Inc. silver and goldsilver and gold in water

22. Mixtures are further classified into two: homogeneous and heterogeneous Hill, J. and Petrucci, R. 1996. General Chemistry Instructor’s Edition.USA: Prentice-Hall, Inc.

23. Homogeneous mixture has the same composition and properties throughout the solution Hill, J. and Petrucci, R. 1996. General Chemistry Instructor’s Edition.USA: Prentice-Hall, Inc.

24. Heterogeneous mixture varies in composition and/or properties from one part of the mixture to another Hill, J. and Petrucci, R. 1996. General Chemistry Instructor’s Edition.USA: Prentice-Hall, Inc.

25. Chang, R. 2002. Chemistry 7 th ed. Singapore: McGraw-Hill.

26. Brown,, E. LeMay, and B. Bursten. 2000. Chemistry: The Central Science. Phils: Pearson Education Asia Pte. Ltd.

27. Properties of matter

28. The properties of matter can be given in two ways extensive or intensive property physical or chemical property

29. Properties of matter (extensive or intensive property)

30. Extensive property depends on the amount of matter being considered values of the same extensive property may be added together Hill, J. and Petrucci, R. 1996. General Chemistry Instructor’s Edition.USA: Prentice-Hall, Inc. www.swapmeetdave.com/Humor/Cats/CatOnScale.jpg

31. Intensive property does not depend on the amount of matter being considered values of the same intensive property may not be added together extensive / extensive = intensive Hill, J. and Petrucci, R. 1996. General Chemistry Instructor’s Edition.USA: Prentice-Hall, Inc.

32. For next week meeting Bring your scientific calculator

33. Properties of matter (physical or chemical property)

34. Physical property can be measured without altering the composition or identity of a substance physical change: only alters the physical make-up of a substance Chang, R. 2002. Chemistry 7 th ed. Singapore: McGraw-Hill.

35. Chemical property cannot be measured without converting the substance into some other substance chemical change: changes the chemical make-up of a substance Chang, R. 2002. Chemistry 7 th ed. Singapore: McGraw-Hill.