1. What is a Mixture?  When you combine two or more substances together, if no chemical reaction occurs then it is called a mixture Notes SPI 0807.9.4 Mixtures or Compounds More About Mixtures:  Any changes you observe in a mixture are only physical changes… no new substances are formed.  Mixtures can be fairly easily separated back into the individual ingredients (Note: compounds can not be easily separated) EXAMPLES:  Salt Water, Blood, Milk, Cement, Soup, Salad, Tea, Soft drinks (Coke, Pepsi, Mountain Dew, etc. ), Tacos, Hamburgers, Kool-Aid Drinks, Energy Drinks, Pizza, etc Science

2. More Mixture Examples Red Bull  …is merely a combination of water and other ingredients Air  …is merely a combination of nitrogen, oxygen, & other gases Steel  …is merely a combination of iron and carbon No chemical reaction occurs NOTE: A mixture may contain one or more compounds, as long as they do not react with each other (like Kool-Aid for example) Kool-Aid is a mixture… When you combine water (a compound) and Kool-Aid powder which has sugar (a compound), flavoring, & coloring) these items do not chemically react with each other. Notes SPI 0807.9.4 Mixtures or Compounds Science

3. How do I know if something is a mixture? Two Ways: 1) Mixtures can be fairly easily taken back apart 2) If no chemical reaction (no chemical bonding) occurred when you combined the substances together, then it is a mixture How do I know if a chemical reaction occurred or not? If you don't see these, then it is probably not a chemical reaction No sound (no sizzle, bang, or boom) No smoke No fizzing or foaming No explosion No heat or light No precipitate is formed Note: These are common indicators of chemical reactions Notes SPI 0807.9.4 Mixtures or Compounds Science

4. Is it a Mixture or a Compound? Summary: No chemical reaction=MIXTURE  If no chemical reaction occurred when you combined two or more substances together, then it is called a mixture Notes SPI 0807.9.4 Mixtures or Compounds Science Summary: Yes to chemical reaction=COMPOUND  if a chemical reaction happened when you combined two or more substances together, then it is compound. Reminder: If a chemical formula has more than one capital letter, then it is a compound (Examples: H 2 O, NaCL, C 6 H 12 O 6

5. 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 Ar (Argon) Why?...is a pure substance, consists of only one type of atom Element

6. 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 Review Activity Mixture

7. 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 C 6 H 12 O 6 (Glucose) Why?...has 3 atoms chemically bonded together Review Activity Compound

8. 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. Review Activity Mixture

9. 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 CO 2 (Carbon Dioxide) Why?...has 2 atoms chemically bonded together Review Activity Compound

10. 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 Review Activity Element