1. 1 Chapter 4Atoms and Elements 4.1 Elements and Symbols Basic Chemistry Copyright © 2011 Pearson Education, Inc.

2. 2 Elements are pure substances that cannot be separated into simpler substances by ordinary laboratory processes the building blocks of matter Gold Carbon Aluminum Elements Basic Chemistry Copyright © 2011 Pearson Education, Inc.

3. 3 Sources of Some Element Names Some elements are named for planets mythological figures minerals colors scientists places Basic Chemistry Copyright © 2011 Pearson Education, Inc.

4. 4 A symbol represents the name of an element consists of 1 or 2 letters starts with a capital letter Examples: 1-Letter Symbols 2-Letter Symbols C carbon Co cobalt N nitrogenCa calcium F fluorine Al aluminum O oxygen Mg magnesium Symbols of Elements Basic Chemistry Copyright © 2011 Pearson Education, Inc.

5. 5 Several symbols are derived from Latin names as shown: Cu, copper (cuprum)Au, gold (aurum) Fe, iron (ferrum) Ag, silver (argentum ) Symbols from Latin Names Basic Chemistry Copyright © 2011 Pearson Education, Inc.

6. 6 Select the correct symbol for each element: A. calcium 1) C2) Ca3) CA B. sulfur 1) S2) Sl3) Su C. iron 1) Ir2) FE3) Fe Learning Check Basic Chemistry Copyright © 2011 Pearson Education, Inc.

7. 7 Select the correct symbol for each element: A. calcium 2) Ca B. sulfur 1) S C. iron 3) Fe Solution Basic Chemistry Copyright © 2011 Pearson Education, Inc.

8. 8 Select the correct name for each symbol: A. N 1) neon 2) nitrogen 3) nickel B. P 1) potassium 2) phosphorus3) phlogiston C. Ag 1) silver 2) agean3) gold Learning Check Basic Chemistry Copyright © 2011 Pearson Education, Inc.

9. 9 Select the correct name for each symbol: A. N 2) nitrogen B. P 2) phosphorus C. Ag 1) silver Solution Basic Chemistry Copyright © 2011 Pearson Education, Inc.