1. Chapter 1-1Chemistry 120 Online LA Tech Chapter One Basic Concepts of Matter

2. Chapter 1-2Chemistry 120 Online LA Tech © Gary Braasch/CORBIS Basic Concepts of Matter Volcano Burning

3. Chapter 1-3Chemistry 120 Online LA Tech Solid, liquid, and gas states Basic Concepts of Matter cont’d David Schultz/Getty Images Water can be found in the solid, liquid, and vapor (gaseous) forms simultaneously.

4. Chapter 1-4Chemistry 120 Online LA Tech → Fig. 1.3 The green color of the Statue of Liberty results from the reaction of copper with the components of air. Andy Levin/Photo Researchers Basic Concepts of Matter cont’d

5. Chapter 1-5Chemistry 120 Online LA Tech Basic Concepts of Matter cont’d "Good" versus "Bad" Properties for a Chemical Substance

6. Chapter 1-6Chemistry 120 Online LA Tech Basic Concepts of Matter cont’d ← The melting of ice cream is a physical change involving a change of state; solid turns to liquid.

7. Chapter 1-7Chemistry 120 Online LA Tech As a result of chemical change, bright steel girders become rusty when exposed to moist air. Basic Concepts of Matter cont’d

8. Chapter 1-8Chemistry 120 Online LA Tech Basic Concepts of Matter cont’d

9. Chapter 1-9Chemistry 120 Online LA Tech (a) A magnet and a mixture consisting of potassium dichromate (orange crystals) and iron fillings. (b) The magnet can be used to separate the iron fillings from the potassium dichromate. James Scherer Basic Concepts of Matter cont’d Fig. 1.6a

10. Chapter 1-10Chemistry 120 Online LA Tech Fig 1.7 Matter falls into two basic classes; pure substances and mixtures. Mixtures, in turn, may be homogeneous or heterogeneous. Basic Concepts of Matter cont’d

11. Chapter 1-11Chemistry 120 Online LA Tech Fig 1.8 A pure substance can be either an element or a compound. Basic Concepts of Matter cont’d

12. Chapter 1-12Chemistry 120 Online LA Tech → Fig. 1.9 Questions used in classifying matter into various categories. Basic Concepts of Matter cont’d

13. Chapter 1-13Chemistry 120 Online LA Tech Basic Concepts of Matter cont’d  CAG 1.2

14. Chapter 1-14Chemistry 120 Online LA Tech Basic Concepts of Matter cont’d ←Fig. 1.10 Outward physical appearance of naturally occurring elements

15. Chapter 1-15Chemistry 120 Online LA Tech Basic Concepts of Matter cont’d → Abundance of elements in the universe and in Earth’s crust (in atom percent)

16. Chapter 1-16Chemistry 120 Online LA Tech Basic Concepts of Matter cont’d ← C.C. 1.2 Elemental Composition of the Human Body

17. Chapter 1-17Chemistry 120 Online LA Tech Basic Concepts of Matter cont’d ← Table 1.1

18. Chapter 1-18Chemistry 120 Online LA Tech ← Fig. 1.12 A computer reconstruction of the surface of a sample of graphite (carbon) as observed with a scanning tunneling microscope. The image reveals the regular pattern of individual carbon atoms. The color was added to the image by computer. Basic Concepts of Matter cont’d Image courtesy of Veeco Instruments Inc.

19. Chapter 1-19Chemistry 120 Online LA Tech Basic Concepts of Matter cont’d → Fig. 1.13 254 million atoms arranged in a straight line would extend a distance of approximately 1 inch.

20. Chapter 1-20Chemistry 120 Online LA Tech Basic Concepts of Matter cont’d Fig 1.14 Molecular structure of (a) chlorine, (b) phosphorus, and (c) sulfur

21. Chapter 1-21Chemistry 120 Online LA Tech ← Fig. 1.15 Depictions of various simple heteroatomic molecules using models. Spheres of different sizes and colors represent different kinds of atoms. Depictions of various simple heteroatomic molecules using models. Spheres of different sizes and colors represent different kinds of atoms. Basic Concepts of Matter cont’d

22. Chapter 1-22Chemistry 120 Online LA Tech Example 1.2 Classify each of the following molecules as (1) diatomic, triatomic, etc. (2) homoatomic or heterotomic and (3) representing an element of a compound. Basic Concepts of Matter cont’d

23. Chapter 1-23Chemistry 120 Online LA Tech Basic Concepts of Matter cont’d Practice Example 1.2 Classify each of the following molecules as (1) diatomic, triatomic, etc. (2) homoatomic or heterotomic and (3) representing an element of a compound.