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Notes

. SPI 0807.9.3 to 9.4 Elements, Compounds, Mixtures. Notes. What Is An Element? a substance that CANNOT be broken down into a simpler substance by CHEMICAL means. In other words…you CANNOT change one element into a different element with a chemical reaction

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  1. SPI 0807.9.3 to 9.4 Elements, Compounds, Mixtures Notes • What Is An Element? • a substance that CANNOT be broken down into a simpler substance by CHEMICAL means. • In other words…you CANNOT change one element into a different element with a chemical reaction • Each individual element is a unique particle called an atom • So in other words…elements are the different types of atoms 3 Li Example: Lithium is an element. Here is one lithium atom Example: Lithium Lithium 6.9 2

  2. Notes Elements Continued • We use a chart to organize elements called… • Currently scientists believe there are only 98 naturally occurring elements in the universe (Reference link: Chemistry Website • We have also created 20 man-made elements for a total of 118 The Periodic Table 118 Uuo Ununoctium 3

  3. SPI 0807.9.3 to 9.4 Elements, Compounds, Mixtures Notes • Elements Continued: • Elements’ names always start with a capital letter • Can be followed by one or more lower case letters • Examples: • H = the element hydrogen • represents one hydrogen atom • Na = the element sodium • represents one sodium atom • Uub=the element ununbium • represents one ununbium atom 4

  4. SPI 0807.9.3 to 9.4 Elements, Compounds, Mixtures Notes • What Is A Compound? • …is a substance made up of atoms of two or more different ELEMENTSthat are CHEMICALLY combined via a chemical reaction. • EXAMPLES: • NaCl = (Table Salt) • CO2 = (Carbon dioxide) • C6H12O6 = (Glucose) • Notice the elements that were • chemically bonded together to form these compounds: SODIUM AND CHLORINE CARBON AND OXYGEN CARBON, HYDROGEN, & OXYGEN 5

  5. Review Activity • Is this an element or a compound? • Write a capital E if you think it is an element • Write a capital C if you think it is a compound • Cs • (Cesium) • Why?...is a pure substance, consists of only one type of atom • Element 6

  6. Review Activity • Is this an element or a compound? • Write a capital E if you think it is an element • Write a capital C if you think it is a compound • NaCl • (Sodium Chloride) • Why?...has two atoms chemically bonded together • Compound 7

  7. Review Activity • Is this an element or a compound? • Write a capital E if you think it is an element • Write a capital C if you think it is a compound • Fe • (Iron) • Why?...is a pure substance, consists of only one type of atom • Element 8

  8. Review Activity • Is this an element or a compound? • Write a capital E if you think it is an element • Write a capital C if you think it is a compound • MgCl2 • (Magnesium Chloride) • Why?...has two atoms chemically bonded together • Compound 9

  9. SPI 0807.9.3 to 9.4 Elements, Compounds, Mixtures Notes • What Is A mixture? • a combination of two or more substances that ARE NOT • chemically combined • No chemical reaction occurs! • Unlike a compound… • …a mixture can be fairly easily taken back apart • EXAMPLES: • Soup, Soft drinks (Coke, Pepsi, etc.), Tea, Hamburgers, Koolaid Drinks, pizza, etc No fizzing or foaming No explosion No smoke No heat or light given off No precipitate is formed 10

  10. Review Activity • Is this an element, compound, or mixture? • Write a capital E if you think it is an element • Write a capital C if you think it is a compound • Write a capital M if you think it is a mixture • Mg • (Magnesium) • Why?...is a pure substance, consists of only one type of atom • Element 11

  11. Review Activity • Is this an element, compound, or mixture? • Write a capital E if you think it is an element • Write a capital C if you think it is a compound • Write a capital M if you think it is a mixture • Monster Energy Drink • Why…ingredients DO NOT chemically combine • Ingredients: Water, sugar, coloring, and flavor • Mixture 12

  12. Review Activity • Is this an element, compound, or mixture? • Write a capital E if you think it is an element • Write a capital C if you think it is a compound • Write a capital M if you think it is a mixture • C6H12O6 • (Glucose) • Why?...has 3 atoms chemically bonded together • Compound 13

  13. Review Activity • Is this an element, compound, or mixture? • Write a capital E if you think it is an element • Write a capital C if you think it is a compound • Write a capital M if you think it is a mixture • Chicken Soup • Why…ingredients DO NOT chemically combine • Ingredients: Water, chicken, vegetable, noodles, salt, etc. • Mixture 14

  14. Review Activity • Is this an element, compound, or mixture? • Write a capital E if you think it is an element • Write a capital C if you think it is a compound • Write a capital M if you think it is a mixture • CO2 • (Carbon Dioxide) • Why?...has 2 atoms chemically bonded together • Compound 15

  15. Review Activity • Is this an element, compound, or mixture? • Write a capital E if you think it is an element • Write a capital C if you think it is a compound • Write a capital M if you think it is a mixture • Uut • (Ununtrium) • Why?...is a pure substance, consists of only one type of atom • Element 16

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