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1. 817 Use the periodic table to determine the properties of an element.

2. Use the periodic table to determine the properties of an element. Key concepts/skills: • Level 1: Define key vocabulary. Locate metals, non metals, and metalloids on periodic table. Describe metallic and non-metallic properties. • Level 2: Explain how periodic table is organized by atomic number into groups and periods. Given several elements, use the periodic table to predict their properties or identify which are most similar or different. Describe how properties change across a period. • Level 3: Describe how reactivity and density can be predicted using the periodic table. Identify the alkali, alkaline, transition metals, halogens, and noble gases and tell how each is distinguished.

3. Use the periodic table to determine the properties of an element. • Periodic table • groups/families • luster • reactivity • transition metals • Elements (review) • periods • malleable • insulator • alkali metals

4. metals Element symbol (review) metals ductile melting point alkaline metals atomic number (review) nonmetals conductivity density noble gases atomic mass (review) metalloids brittle periodic halogens

5. Use the periodic table to determine the properties of an element. • Atomic numbers • The periodic table is arranged into rows or PERIODS according to atomic number. • Atomic numbers increase from left to right across the period and from top to bottom down the columns Increases from top to bottom Atomic numbers increase from left to right

6. Use the periodic table to determine the properties of an element. II. Valence • The periodic table is arranged into columns (Groups/families) according to valence • Valence – number of electrons in the outermost energy level • All elements in a group or column have the same valence number

7. 1 2 3 4 5 6 7 8 2 - 3 Valence numbers increase from left to right

8. Use the periodic table to determine the properties of an element. Alkali Metals Noble Gases Alkaline earth metals Boron Family Carbon Family Nitrogen Family Oxygen Family Halogens Transition Metals

9. Use the periodic table to determine the properties of an element. III. Metals, Metalloids, and Nonmetals • (Metals) Most elements on the periodic table are metals • Lose electrons • Malleable (smashed very flat) ductile (stretched) • luster (how light is reflected) shiny • good conductors (of heat and electricity) • As you move left to right across a period, elements become less metallic Become less metallic

10. Use the periodic table to determine the properties of an element. • The metalloids boron, silicon, germanium, arsenic, antimony, tellurium separate the metal from the nonmetals 1. Metalloids have metal and nonmetal chars.

11. Use the periodic table to determine the properties of an element. D. Nonmetals are to the far right of the periodic table. Most are gases, bromine is a liquid, and 6 are solid 1. Gain electrons 2. brittle 3. dull 4. poor conductors

12. Use the periodic table to determine the properties of an element. • Mass A. Mass increased as you go from left to right in each period 1. the element to the right is more massive B. Mass increases as you go down in a group. 1. the element below is more massive Mass increases Mass increases

13. Non reactive Reactivity increases Reactivity Increases V. Reactivity – how easily the elements will lose gain electrons A. Reactivity is greatest at each end of the table with the exception of group 18 1. The element closest to the center of the table are less reactive 2. On right reactivity increases as you go up 3. On the left reactivity increases as you go down Reactivity increases Reactivity increases

14. Lanthanide and actinide series • Placed below the transition metals to make the table more narrow • Lanthanides – shiny reactive metals • Actinides – all are radioactive and unstable after plutonium they do no occur in nature

16. Use the periodic table to determine the properties of an element.